共用题干Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach. Citrus fruits,tomatoes and uncooked cabbage contain Vitamin C.A:Right B:Wrong C:Not mentioned
共用题干
Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.
Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.
Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.
Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.
Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.
Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.
Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach.
Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.
Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.
Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.
Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.
Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.
Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.
Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach.
Citrus fruits,tomatoes and uncooked cabbage contain Vitamin C.
A:Right
B:Wrong
C:Not mentioned
A:Right
B:Wrong
C:Not mentioned
参考解析
解析：第二段第四句说，蛋黄也含有维生素A。因此选A。
第三段最后两句说，维生素B，不仅存在于全谷类食品，如糙米，还存在于其他的食物里，包括豆类、坚果、肉类和鱼类。因此选B。
第四段最后一句："In some countries, it is added to products like bread.”在一些国家，它被添加到面包等产品中，而不是in most countries。因此选B。
第五段最后一句说，所以我们必须每天食用柑橘类水果、西红柿和生卷心菜以摄取维生素C。因此选A。
第二段第三句说，鱼肝油富含维生素A。第六段最后一句说，鱼肝油也含有维生素D。因此选D。
最后一段说，健康的血液需要维生素K。它通过增加创口周围的血液私稠度来止血。猪肉产品、肝脏和蔬菜（像卷心菜、甘蓝和菠菜）富含维生素K。因此选B。
维生素有助于人体健康，但文章并没有提到维生素越多越好，因此选择C。
第三段最后两句说，维生素B，不仅存在于全谷类食品，如糙米，还存在于其他的食物里，包括豆类、坚果、肉类和鱼类。因此选B。
第四段最后一句："In some countries, it is added to products like bread.”在一些国家，它被添加到面包等产品中，而不是in most countries。因此选B。
第五段最后一句说，所以我们必须每天食用柑橘类水果、西红柿和生卷心菜以摄取维生素C。因此选A。
第二段第三句说，鱼肝油富含维生素A。第六段最后一句说，鱼肝油也含有维生素D。因此选D。
最后一段说，健康的血液需要维生素K。它通过增加创口周围的血液私稠度来止血。猪肉产品、肝脏和蔬菜（像卷心菜、甘蓝和菠菜）富含维生素K。因此选B。
维生素有助于人体健康，但文章并没有提到维生素越多越好，因此选择C。
相关考题：
What can we learn from the passage?A. We should enjoy someone who hurts us.B. We should pay more attention to our friends.C. The peace of mind is more important than the hurt itself.D. It’s better to let bitterness go along with the other person.
Passage TwoWhen we see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are nearsighted can only see things that are very close to their eyes. Everything else is not so clear. Many people who do a lot of close work, such as writing, reading and sewing, become near sighted. Then they have to wear glasses in order to see distant (远处的) things clearly'.People who are nearsighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm's length. If they want to do much reading, they must get glasses, too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people's eyes become cloudy because of cataracts (白内障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle (角度). To prove this to yourself, look at an object out of one eye; then look at the same object outof the other eye. You will find the object's relation to the background (背景) and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.40. We should take good care of our eyes ______.A. only when we cannot see perfectlyB. only when we can see wellC. even if we can see wellD. only when we realize how important our eyes are
共用题干Step Back in TimeDo you know that we live a lot longer now than the people who were born before us?One hundred years ago the average woman lived to be 45.But now,she can live until at least 80.One of the main reasons for people living longer is that we know how to look after ourselves better. We know which foods are good for us and what we have to eat to make sure our bodies get all the healthy things they need.We know why we sometimes get ill and what to do to get better again.And we know how important it is to do lots of exercise to keep our hearts beating healthily.But in order that we don't slip back into bad habits,let's have a look at what life was like 100 years ago.Families had between 15 and 20 children,although many babies didn't live long. Children suffered from lots of diseases , especially rickets（佝偻病）and scurvy（坏血病）, which are both caused by bad diets.This is because many families were very poor and not able to feed their children well.Really poor families who lived in crowded cities like London and Manchester often slept standing up,bending over a piece of string,because there was no room for them to lie down.People didn't have fridges until the 1 920s.They kept fresh food cold by storing it on windowsills（窗台板）,blocks of ice, or even burying it in the garden.Some children had to start work at the age of seven or eight to earn money for their parents. If you had lived 1 00 years ago , you might well be selling matchsticks（火柴杆）(a job done by many children)or working with your dad by now. Life was not easy for many children living 100 years ago.A:Right B:Wrong C:Not mentioned
共用题干Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach. In most countries,vitamin B-twelve is added to products like bread.A:Right B:Wrong C:Not mentioned
共用题干Step Back in TimeDo you know that we live a lot longer now than the people who were born before us?One hundred years ago the average woman lived to be 45.But now,she can live until at least 80.One of the main reasons for people living longer is that we know how to look after ourselves better.We know which foods are good for us and what we have to eat to make sure our bodies get all the healthy things they need.We know why we sometimes get ill and what to do to get better again.And we know how important it is to do lots of exercise to keep our hearts beating healthily.But in order that we don't slip back into bad habits,let's have a look at what life was 100 years agoFamilies had between 15 and 20 children,although many babies didn't live long.from lots of diseases , especially rickets (佝偻病）and scurvy（坏血病）,which are bot diets.This is because many families were very poor and not able to feed their children well.Really poor families who lived in crowded cities like London and Manchester often slept standing up,bending over a piece of string,because there was no room for them to lie down.People didn't have fridges until the 1920s.They kept fresh food cold by storing it on windowsills（窗台板）,blocks of ice,or even burying it in the garden.Some children had to start work at the age of seven or eight to earn money for their pai lived 100 years ago,you might well be selling matchsticks（火柴杆）(a job done by many children）or working with your dad by now.People in the past preferred standing up to lying down when sleeping.A:Right B:Wrong C:Not mentioned
共用题干Step Back in TimeDo you know that we live a lot longer now than the people who were born before us?One hundred years ago the average woman lived to be 45.But now,she can live until at least 80.One of the main reasons for people living longer is that we know how to look after ourselves better. We know which foods are good for us and what we have to eat to make sure our bodies get all the healthy things they need.We know why we sometimes get ill and what to do to get better again.And we know how impor-tant it is to do lots of exercise to keep our hearts beating healthily.But in order that we don't slip back into bad habits,let',have a look at what life was like 100 yearsago.Families had between 15 and 20 children,although many babies didn'I live long. Children suffered from lots of diseases,especially rickets（佝偻病）and scurvy（坏血病）,which are both caused by bad diets.This is because many families were very poor and not able to feed their children well.Really poor families who lived in crowded cities like London and Manchester often slept standing up, bending over a piece of string,because there was no room for them to lie down.People didn't have fridges until the 1920s.They kept fresh food cold by storing it on windowsills（窗台板）,blocks of ice,or even burying it in the garden.Some children had to start work at the age of seven or eight to earn money for their parents.if you had lived 100 years ago,you might well be selling matchsticks（火柴杆）(a job done by many children) orworking with your dad by now.Life was not easy for many children living 100 years ago.A:RightB:WrongC:Not mentioned
共用题干Step Back in Time Do you know that we live a lot longer now than the people who were born before us?One hundred years ago the average woman lived to be 45 .But now,she can live until at least 80. One of the main reasons for people living longer is that we know how to look after ourselves better. We know which foods are good for US and what we have to eat to make sure our bodies get all the healthy things they need.We know why we sometimes get ill and what to do to get better a-gain .And we know how important it is to do lots of exercise to keep our hearts beating healthily. But in order that we don't slip back into bad habits,let's have a look at what life was like 100 years ago. Families had between 15 and 20 children,although many babies didn't live long. Children suffered from lots of diseases, especially rickets (佝偻病）and scurvy（坏血病）,which are both caused by bad diets.This is because many families were very poor and not able to feed their chil-dren well. Really poor families who lived in crowded cities like London and Manchester often slept standing up,bending over a piece of string,because there was no room for them to lie down. People didn't have fridges until the 1920s.They kept fresh food cold by storing it on window-sills（窗台板）,blocks of ice , or even burying it in the garden. Some children had to start work at the age of seven or eight to earn money for their parents. If you had lived 100 years ago, you might well be selling matchsticks（火柴杆）(a job done by many children) or working with your dad by now. Poor diets can lead to such diseases as rickets and scurvy.A: RightB:WrongC: Not mentioned
共用题干Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach. The more Vitamins we have,the more healthy we will be.A:Right B:Wrong C:Not mentioned
共用题干Daisy Williams admits genes play some role in the way she looks,but believes diet is an important factor."It doesn't matter how good the genes are if you don't eat properly and take care of your-self,"she says."If you want to look good,get plenty of rest,exercise every day,eat mostly raw fruits and vegetables and quit worrying."Nowhere do the signs of aging manifest themselves more clearly than in the condition of the skin. When your weight fluctuates（波动）,the skin stretches with each up cycle , but it may not completely shrink back to its original size in the down cycle. As a result,the skin may sag（松弛下垂）.Zinc and vitamin A are important for normal,healthy skin.Zinc helps the skin repair itself, and vitamin A aids in keeping skin supple,preventing dryness and helping shed dead cells.Good sources of zinc are beef,eggs and seafood,while many dark-green leafy vegetables are rich in beta carotene（胡萝卜素）, which the body converts to vitamin A.Vitamin C helps improve the blood supply to the skin and aids in forming collagen（胶原）. Good sources of vitamin C include citrus fruits and juices,cauliflower,snow peas,red and green peppers,broccoli,white and sweet potatoes, tomatoes,watermelon,and honeydew melon.How food is prepared matters too.The longer vegetables cook,the greater the loss of vitamins. Don't soak vegetables when washing them,since water-soluble vitamins such as C will be lost.Good general nutrition is essential to maintaining a healthy,youthful appearance.And the key to good general nutrition is balance.Proteins should make up roughly 10 percent of your daily calorie intake;no more than 30 percent should come from fats;and the remaining calories should come mostly from complex carbohydrates（碳水化合物）.Dark-green leafy vegetables are good sources of beta carotene.A:Right B:Wrong C:Not mentioned
共用题干Daisy Williams admits genes play some role in the way she looks,but believes diet is an important factor."It doesn't matter how good the genes are if you don't eat properly and take care of your-self,"she says."If you want to look good,get plenty of rest,exercise every day,eat mostly raw fruits and vegetables and quit worrying."Nowhere do the signs of aging manifest themselves more clearly than in the condition of the skin. When your weight fluctuates（波动）,the skin stretches with each up cycle , but it may not completely shrink back to its original size in the down cycle. As a result,the skin may sag（松弛下垂）.Zinc and vitamin A are important for normal,healthy skin.Zinc helps the skin repair itself, and vitamin A aids in keeping skin supple,preventing dryness and helping shed dead cells.Good sources of zinc are beef,eggs and seafood,while many dark-green leafy vegetables are rich in beta carotene（胡萝卜素）, which the body converts to vitamin A.Vitamin C helps improve the blood supply to the skin and aids in forming collagen（胶原）. Good sources of vitamin C include citrus fruits and juices,cauliflower,snow peas,red and green peppers,broccoli,white and sweet potatoes, tomatoes,watermelon,and honeydew melon.How food is prepared matters too.The longer vegetables cook,the greater the loss of vitamins. Don't soak vegetables when washing them,since water-soluble vitamins such as C will be lost.Good general nutrition is essential to maintaining a healthy,youthful appearance.And the key to good general nutrition is balance.Proteins should make up roughly 10 percent of your daily calorie intake;no more than 30 percent should come from fats;and the remaining calories should come mostly from complex carbohydrates（碳水化合物）.Both genes and diets affects people's look.A:Right B:Wrong C:Not mentioned
共用题干Daisy Williams admits genes play some role in the way she looks,but believes diet is an important factor."It doesn't matter how good the genes are if you don't eat properly and take care of your-self,"she says."If you want to look good,get plenty of rest,exercise every day,eat mostly raw fruits and vegetables and quit worrying."Nowhere do the signs of aging manifest themselves more clearly than in the condition of the skin. When your weight fluctuates（波动）,the skin stretches with each up cycle , but it may not completely shrink back to its original size in the down cycle. As a result,the skin may sag（松弛下垂）.Zinc and vitamin A are important for normal,healthy skin.Zinc helps the skin repair itself, and vitamin A aids in keeping skin supple,preventing dryness and helping shed dead cells.Good sources of zinc are beef,eggs and seafood,while many dark-green leafy vegetables are rich in beta carotene（胡萝卜素）, which the body converts to vitamin A.Vitamin C helps improve the blood supply to the skin and aids in forming collagen（胶原）. Good sources of vitamin C include citrus fruits and juices,cauliflower,snow peas,red and green peppers,broccoli,white and sweet potatoes, tomatoes,watermelon,and honeydew melon.How food is prepared matters too.The longer vegetables cook,the greater the loss of vitamins. Don't soak vegetables when washing them,since water-soluble vitamins such as C will be lost.Good general nutrition is essential to maintaining a healthy,youthful appearance.And the key to good general nutrition is balance.Proteins should make up roughly 10 percent of your daily calorie intake;no more than 30 percent should come from fats;and the remaining calories should come mostly from complex carbohydrates（碳水化合物）.The passage primarily tells us how to lose weight so as to improve one's appearance.A:Right B:Wrong C:Not mentioned
共用题干Daisy Williams admits genes play some role in the way she looks,but believes diet is an important factor."It doesn't matter how good the genes are if you don't eat properly and take care of your-self,"she says."If you want to look good,get plenty of rest,exercise every day,eat mostly raw fruits and vegetables and quit worrying."Nowhere do the signs of aging manifest themselves more clearly than in the condition of the skin. When your weight fluctuates（波动）,the skin stretches with each up cycle , but it may not completely shrink back to its original size in the down cycle. As a result,the skin may sag（松弛下垂）.Zinc and vitamin A are important for normal,healthy skin.Zinc helps the skin repair itself, and vitamin A aids in keeping skin supple,preventing dryness and helping shed dead cells.Good sources of zinc are beef,eggs and seafood,while many dark-green leafy vegetables are rich in beta carotene（胡萝卜素）, which the body converts to vitamin A.Vitamin C helps improve the blood supply to the skin and aids in forming collagen（胶原）. Good sources of vitamin C include citrus fruits and juices,cauliflower,snow peas,red and green peppers,broccoli,white and sweet potatoes, tomatoes,watermelon,and honeydew melon.How food is prepared matters too.The longer vegetables cook,the greater the loss of vitamins. Don't soak vegetables when washing them,since water-soluble vitamins such as C will be lost.Good general nutrition is essential to maintaining a healthy,youthful appearance.And the key to good general nutrition is balance.Proteins should make up roughly 10 percent of your daily calorie intake;no more than 30 percent should come from fats;and the remaining calories should come mostly from complex carbohydrates（碳水化合物）.In order to look younger,one should cut back on fats.A:Right B:Wrong C:Not mentioned
共用题干Daisy Williams admits genes play some role in the way she looks,but believes diet is an important factor."It doesn't matter how good the genes are if you don't eat properly and take care of your-self,"she says."If you want to look good,get plenty of rest,exercise every day,eat mostly raw fruits and vegetables and quit worrying."Nowhere do the signs of aging manifest themselves more clearly than in the condition of the skin. When your weight fluctuates（波动）,the skin stretches with each up cycle , but it may not completely shrink back to its original size in the down cycle. As a result,the skin may sag（松弛下垂）.Zinc and vitamin A are important for normal,healthy skin.Zinc helps the skin repair itself, and vitamin A aids in keeping skin supple,preventing dryness and helping shed dead cells.Good sources of zinc are beef,eggs and seafood,while many dark-green leafy vegetables are rich in beta carotene（胡萝卜素）, which the body converts to vitamin A.Vitamin C helps improve the blood supply to the skin and aids in forming collagen（胶原）. Good sources of vitamin C include citrus fruits and juices,cauliflower,snow peas,red and green peppers,broccoli,white and sweet potatoes, tomatoes,watermelon,and honeydew melon.How food is prepared matters too.The longer vegetables cook,the greater the loss of vitamins. Don't soak vegetables when washing them,since water-soluble vitamins such as C will be lost.Good general nutrition is essential to maintaining a healthy,youthful appearance.And the key to good general nutrition is balance.Proteins should make up roughly 10 percent of your daily calorie intake;no more than 30 percent should come from fats;and the remaining calories should come mostly from complex carbohydrates（碳水化合物）.The longer vegetables cook,the greater vitamin C remains.A:Right B:Wrong C:Not mentioned
共用题干Daisy Williams admits genes play some role in the way she looks,but believes diet is an important factor."It doesn't matter how good the genes are if you don't eat properly and take care of your-self,"she says."If you want to look good,get plenty of rest,exercise every day,eat mostly raw fruits and vegetables and quit worrying."Nowhere do the signs of aging manifest themselves more clearly than in the condition of the skin. When your weight fluctuates（波动）,the skin stretches with each up cycle , but it may not completely shrink back to its original size in the down cycle. As a result,the skin may sag（松弛下垂）.Zinc and vitamin A are important for normal,healthy skin.Zinc helps the skin repair itself, and vitamin A aids in keeping skin supple,preventing dryness and helping shed dead cells.Good sources of zinc are beef,eggs and seafood,while many dark-green leafy vegetables are rich in beta carotene（胡萝卜素）, which the body converts to vitamin A.Vitamin C helps improve the blood supply to the skin and aids in forming collagen（胶原）. Good sources of vitamin C include citrus fruits and juices,cauliflower,snow peas,red and green peppers,broccoli,white and sweet potatoes, tomatoes,watermelon,and honeydew melon.How food is prepared matters too.The longer vegetables cook,the greater the loss of vitamins. Don't soak vegetables when washing them,since water-soluble vitamins such as C will be lost.Good general nutrition is essential to maintaining a healthy,youthful appearance.And the key to good general nutrition is balance.Proteins should make up roughly 10 percent of your daily calorie intake;no more than 30 percent should come from fats;and the remaining calories should come mostly from complex carbohydrates（碳水化合物）.When one gains weight,the skin becomes loose.A:Right B:Wrong C:Not mentioned
共用题干Which foods should be eaten to keep us healthy?Let us look at some important vitamins for these answers.Vitamin A helps prevent skin and other tissues from becoming dry.People who do not get enough vitamin A cannot see well in darkness.Vitamin A is found in fish liver oil.It also is in the yellow part of eggs.Sweet potatoes,carrots and other darkly colored fruits and vegetables contain substances that the body can change into vitamin A.Vitamin B-one changes starchy（含淀粉的）foods into energy. It also helps the heart and nervous system work smoothly.Without it,we would be weak and would not grow.Vitamin B-one is found not just in whole grains like brown rice,but also in other foods.These include beans and peas,nuts,and meat and fish.Vitamin B-twelve is needed so folic acid（叶酸）can do its work. Together, they help produce red blood cells.Vitamin B-twelve is found naturally in foods such as eggs,meat,fish and milk products.Folic acid has been shown to prevent physical problems in babies when taken by their mothers during pregnancy.Vitamin B-twelve is found in green leafy vegetables and other foods,like legumes and citrus fruits.In some countries,it is added to products like bread.Vitamin C is needed for strong bones and teeth,and for healthy blood passages.It also helps wounds heal quickly.The body stores little vitamin C.So we must get it every day in foods such as citrus（柑橘类）fruits,tomatoes and uncooked cabbage.Vitamin D increases levels of the element calcium in the blood.Calcium is needed for nerve and muscle cells to work normally.It also is needed to build strong bones.Ultraviolet light from the sun changes a substance in the skin into vitamin D.Fish liver oil also contains vitamin D.Vitamin K is needed for healthy blood.It thickens the blood around a cut to stop bleeding. Vitamin K can be found in pork products,liver and in vegetables like cabbage,kale and spinach. Fish liver oil contains vitamin A and vitamin D.A:Right B:Wrong C:Not mentioned
共用题干Messages from the Media1. The weather forecast,a story about the candidates in an election,and movie reviews are exam-ples of messages from the media. A communication medium , of which the plural（复数的）form ismedia,is a means of communicating a message .Examples of media are television,radio,news-pa-pers and books and the telephone.The media that can reach many people at once are called mass media.2. It is not difficult to think of other messages we receive through the mass media.Every day we get hundreds of them.Think about advertisements,for example.We see and hear these messages almost everywhere we go .Advertisements are important messages,even though they are sometimes annoying .They help us compare and evaluate products.3. Most of us get more information from the media than from the classroom.Think for a moment, about how you learn about local news and events.Do you depend on other people or the media?What about international news?What is the most important source of information for you?People who are asked this question usually answer,"Television".4. Think of all the messages you received today.Perhaps you read a newspaper during breakfast, or maybe you read advertisements on billboards（露天广告牌）on your way to school. Did you u1sten to a weather forecast or the sports news on the radio this morning?Right now you are getting information through a very important medium of mass communication a book.5. We use the information we get from radio,television,newspapers,and other media to make decisions and form opinions.That is why the mass media are so important.Editorials and articles in newspapers help us decide how to vote,consumer reports on television help us decide how to spend our money,and international news on the radio makes us think and form opinions about question of war and peace. The mass media are important to us because they shape______.A: sports newsB: our decisions and opinionsC: mass communicationD: our messagesE: source of informationF: the mass media
共用题干Messages From the Media1.The weather forecast,a story about the candidates in an election,and movie reviews are examples of messages from the media. A communication medium, of which the plural（复数的）form is media,is a means of communicating a message.Examples of media are television,radio,newspapers, books and the telephone.The media that can reach many people at once are called mass media.2.It is not difficult to think of other messages we receive through the mass media. Every day we get hundreds of them. Think about advertisements,for example,we see and hear these messages almost everywhere we go.Advertisements are important messages,even though they are sometimes annoying. They help us compare and evaluate products.3.Most of us get more information from the media than from the classroom. Think for a moment,about how you learn about local news and events.Do you depend on other people or the media?What about international news?What is the most important source of information for you? People who are asked this question usually answer,"Television".4.Think of all the messages you received today.Perhaps you read a newspaper during break-fast,or maybe you read advertisements on billboards（露天广告牌）on your way to school. Did you listen to a weather forecast or the sports news on the radio this morning?Right now you are getting information through a very important medium of mass communication一a book.5.We use the information we get from radio,television,newspapers,and other media to make decisions and form opinions.That is why the mass media are so important. Editorials and articles in newspapers help us decide how to vote,consumer reports on television help us decide how to spend our money,and international news on the radio makes us think and form opinions about questions of war and peace.Each day we get a lot of messages from______.A:sports newsB:our decisions and opinionsC:mass communicationD:our messagesE:source of information F: the mass media
共用题干Messages From the Media1.The weather forecast,a story about the candidates in an election,and movie reviews are examples of messages from the media. A communication medium, of which the plural（复数的）form is media,is a means of communicating a message.Examples of media are television,radio,newspapers, books and the telephone.The media that can reach many people at once are called mass media.2.It is not difficult to think of other messages we receive through the mass media. Every day we get hundreds of them. Think about advertisements,for example,we see and hear these messages almost everywhere we go.Advertisements are important messages,even though they are sometimes annoying. They help us compare and evaluate products.3.Most of us get more information from the media than from the classroom. Think for a moment,about how you learn about local news and events.Do you depend on other people or the media?What about international news?What is the most important source of information for you? People who are asked this question usually answer,"Television".4.Think of all the messages you received today.Perhaps you read a newspaper during break-fast,or maybe you read advertisements on billboards（露天广告牌）on your way to school. Did you listen to a weather forecast or the sports news on the radio this morning?Right now you are getting information through a very important medium of mass communication一a book.5.We use the information we get from radio,television,newspapers,and other media to make decisions and form opinions.That is why the mass media are so important. Editorials and articles in newspapers help us decide how to vote,consumer reports on television help us decide how to spend our money,and international news on the radio makes us think and form opinions about questions of war and peace.The mass media are important to us because they shape______.A:sports newsB:our decisions and opinionsC:mass communicationD:our messagesE:source of information F: the mass media
It's almost impossible to go through life without experiencing some kind of failure.People who do so probably live so cautiously that they go nowhere.Put simply,they’re not real living at all.But,the wonderful thing about failure is that it's entirely up to us to decide how to look at it.We can choose to see failure as"the end of the world,"or as proof of just how inadequate we are.Or,we can look at failure as the incredible learning experience that it often is.Every time we fail at something,we can choose to look for the lesson we're meant to learn.These lessons are very important;they're how we grow,and how we keep from making that same mistake again.Failures stop us only if we let them.Failure can also teach us things about ourselves that we would never have learned otherwise.For instance,failure can help you discover how strong a person you are.Failing at something can help you discover your truest friends,or help you find unexpected motivation to succeed.
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.People who suffer from astigmatism have______.A.a difficulty that can be corrected by an operationB.eyes that are not exactly the right shapeC.an eye difficulty that cannot be corrected by glassesD.one eye bigger than the other
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.Having two eyes instead of one is particularly useful for______.A.looking over a wide areaB.seeing objects far awayC.judging distancesD.seeing at night
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.When things far away seem indistinct， one is probably______.A.astigmaticB.far-sightedC.suffering from cataractsD.near-sighted
资料：When we see well，we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.People who are near-sighted can only see things that are very close to their eyes，Everything else seems blurry（=unclear）.Many people who do a lot of work，such as writing，reading and sewing become near-sighted.People who are far-sighted suffer from just the opposite problem. They can see things that are far away，but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading，they must get glasses，too.Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism. This，too，can be corrected by glasses. Some people’s eyes become cloudy because of cataracts. Long ago these people often became blind. Now，however，it is possible to operate on the cataracts and remove them.Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself，look at an object out of one eye；Then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distance as people with two eyes.We should take good care of our eyes______.A.even if we can see wellB.only when we cannot see perfectlyC.only when we realize how important our eyes areD.only when we can see well
共用题干Messages from the Media1.The weather forecast,a story about the candidates in an election,and movie reviews are examples of messages from the media. A communication medium , of which the plural（复数的） form is media,is a means of communicating a message.Examples of media are television,radio, newspapers and books and the telephone.The media that can reach many people at once are callemass media.2.It is not difficult to think of other messages we receive through the mass media. Every day we get hundreds of them.Think about advertisements,for example.We see and hear these messages almost everywhere we go.Advertisements are important messages,even though they are sometimes annoying.They help us compare and evaluate products.3.Most of us get more information from the media than from the classroom. Think for a moment, about how you learn about local news and events.Do you depend on other people or the media?What about international news?What is the most important source of information for you?People who are asked this question usually answer,"Television".4.Think of all the messages you received today.Perhaps you read a newspaper during breakfast, or maybe you read advertisements on billboards（露天广告牌）on your way to school. Did you listen to a weather forecast or the sports news on the radio this morning?Right now you are getting information through a very important medium of mass communication一a book.5.We use the information we get from radio,television,newspapers and other media to make decisions and form opinions.That is why the mass media are so important.Editorials and articles in newspapers help us decide how to vote,consumer reports on television help up decide how to spend our money,and international news on the radio makes us think and form opinions about questions of war and peace.The mass media are important to us because they shape________.A:sports newsB:our decisions and opinionsC:mass communicationD:our messagesE:source of information F: the mass media
共用题干Tiny InvadersThe human body is truly amazing. It allows us to sense the world around us,to do work and have fun, and to move from place to place.In fact,the human body does its work so well that most people don't think about it very much一until they get sick.The germs（致病菌）that make people sick are everywhere. You can ' t see them , but they ' re there. They're sitting on your desk.They're hiding on your computer's keyboard.They're even in the air that you are breathing. There are two types of germs : viruses and bacteria（细菌）.Viruses are germs that can only live inside animals or plants. Viruses cause illnesses such as flu and measles（麻疹）.Bacteria are tiny creatures.Some bacteria are good.They can help your stomach break down food.Other bacteria aren't so good. They can make you sick. Bacteria can cause sore throats（喉痛）and ear infections.How can you stop these tiny invaders from making you sick?Your skin is the first defense against germs.You can prevent some illnesses simply by washing,with soap and water. But germs can still enter the body through small cuts in the skin or through the mouth,eyes,and nose.Once germs are inside your body, your immune（免疫的）system tries to protect you. It looks for and destroys germs.How does it do that?Special cells patrol your body.Some of these cells actually eat germs! Other cells make antibodies.An antibody sticks to a germ.There is a different antibody for each kind of germ. Some antibodies keep germs from making you sick.Others help your body find and kill germs.After a germ is destroyed,the antibodies stay in your body.They protect you if the same kind of germ comes back. That way you will not get the same illness twice.You can keep your body healthy by eating a nutritious（有营养的）diet to make your immune system strong. You can also help your immune system fight germs by getting vaccinated（接种）.Vaccines are medicines.They contain germs that have been killed or weakened.The dead germs can't make you sick. Instead,they cause your body to make antibodies.If the same germ ever shows up again,then your antibodies attack it.Washing your skin can prevent some illnesses.A:RightB:WrongC:Not mentioned
单选题The saying from Benjamin Franklin “Those things that hurt, instruct” suggests that ______.Awe do not learn from experienceBwe do not learn when we are in painCpain teaches us important lessonsDpain cannot be avoided
单选题According to Dr. Small, _____.Aleft-handers may start brain aging later than right-handers doBlearning a foreign language does not help to keep our brain from getting oldCdoing crossword puzzles is a good way to keep us from memory lossDmental exercises plus healthy diet alone cannot keep us from brain aging
单选题Which of the following generalizations do you think the writer would agree?AWhite people and Mexican Americans cannot get along with each other.BEven a seemingly minor experience in the past can bother us in the present.CPeople do always know how to respond to hurtful acts.DPeople of other races should not watch the glamorized models of American TV mothers and fathers.