单选题This passage is mainly about _____.Athe different ways of preserving foodBwhy we must kill the bacteria in our foodCthe importance of preserving foodDhow to preserve food by cooking and salting
单选题
This passage is mainly about _____.
A
the different ways of preserving food
B
why we must kill the bacteria in our food
C
the importance of preserving food
D
how to preserve food by cooking and salting
参考解析
解析：
本题考查文章的主旨。第一段作者介绍了保存食物的原理，从第二段起开始介绍保存食物的各种方法，如冷冻法、烹饪法、晒干法、盐腌法以及添加化学成分法。因此文章的主旨是保存食物的不同方法，答案选A。
本题考查文章的主旨。第一段作者介绍了保存食物的原理，从第二段起开始介绍保存食物的各种方法，如冷冻法、烹饪法、晒干法、盐腌法以及添加化学成分法。因此文章的主旨是保存食物的不同方法，答案选A。
相关考题：
III．阅读理解（20分）AEvery country has its own way of cooking． American people have their way of cooking，don’t they?Most people in the United States like fast food． But if you think that American people don’t like cooking， you are not right． It’s true that most Americans take fast food as their breakfast and lunch． But they also think cooking is interesting． Parents see the importance of teaching their daughters how to cook． And most Americans say that home cooked meal is the best．Americans have their own way of cooking． For example， baking(烘烤) is the most popu’lar way of cooking in America． We can see ovens in most American families． American cooks． pay attention to the balance of food． In planning a big meal， they try to cook meat， a few vege’ tables， some bread and often some sweet food．They also like to make the meal look beautiful．There are many kinds of food in different colors on the plate， so the meal is healthy and looks beautiful， too．( )21．Most Americans ________．A． don't like cookingB． cook food in the morningC． like home cooked meal
Why are researches on parrots important according to the passage?A. The Trust shows great concern for the programme.B. We need to know more about how to preserve parrots.C. Many people are interested in collecting parrots.D. Parrots’ intelligence may some day benefit people.
Friends play an important part in our lives, but we dont know much about how to make friends. As we get to know people, we consider things like age, races, looks and social positions. Thus it is more difficult for people to become friends if there is a big difference in age and background. However, some people dont think these factors are of the most importance.
AThe aim(目的) of students who come to school is ro srudy． But if we haven't a right way to study we will waste the time or the money． The following are ways for studying．The best time for reading js morning． Because in the morning， the air is fresh and our minds are clear．For that reason，we can get good results．Jt- studying we must be'patient(耐心的)． If w．e don't understand a text well，we must read it again． We should not read the next one till we have learned the first one well．When we are studying，we must put our hearts into the book． We can not read absent-．mindedly(心不在焉地) ，or we can get nothing from the book while we are reading．We must always ask "whys"． If it is not well understood，write it down and ask our teach-ers or parents，brothers or friends，in any possible way． We must know it completely and then our knowledge can be used well．Though there are many ways for studying，however，the above mentioned(提及的) will be quite enough if we can keep them in heart and do so，( )21． The article tells us_________A． to read in the morningB． to pay close attention to ways for studyingC． the importance of readingD． to have patience in studying
30． What's the passage mainly about?A． How to become a top student．B． How to plan your time．C． How to study English．D． How to take notes．
Why is there no natural reason for famine?A、We now have technology to preserve and keep food.B、We can transport food over long distances.C、The government can import food and distribute it to its people.D、Nature can never create any disasters for human beings.
The passage mainly involves______.A．effects of boredom on people's life and workB．various ways to conquer the feeling of boredomC．studies of possible reasons why people get boredD．the importance of scientific research into boredom
30． What is the passage mainly about? 、A． We must make more friends．B． Don-t quarrel with our parents．C． What should we do when our parents quarrel．D． Sometimes we must stay away from our parents．
From the passage we can conclude that______.A. different people have different ideas about the same thingB. Westerners culture is similar to our Chinese cultureC. in general, Westerners and the Chinese don't like pigsD. all of the Chinese like pigs better than Westerners
25． The best title for this passage is _____.A． Bad habitsB． Junk foodC． Unhealthy foodD． Advice on healthy eating
共用题干第一篇irradiating（照射）fruits, vegetable, pork and chicken to kill insects and bacteria has been approved by the Food and Drug Administration over the past decade or so.Irradiation of other meats, such as beef and lamb,is being reviewed.Federal approval dose not require that industry adopt the process,and few food processors presently offer irradiated products.Market studies have shown that many consumers are afraid that eating irradiated food may cause cancer,despite scientific studies that prove the safety of treated food.Some people argue that more severe government inspection,higher food-safety standards,and more careful food-preparation practices by consumers are all that is needed to ensure that food is safe.Consequently,companies currently see no need to spend millions of dollars outfitting（配备）processing plants with the equipment necessary for a process that very few shoppers are in favor of.All supermarkets that sell irradiated food must label that food either directly on the packaging or in the case of bulk items like fruits and vegetables by placing a sign nearby. There is no requirement for the labeling of irradiated food served by chain restaurants or hospitals that buy directly from distributors,nor any regulations for products that contain irradiated ingredients.Presently,the FDA allows food to be treated with three types of radiation一gamma rays,highenergy electrons,and X-rays,and sets limits on doses（辐射量）depending on the type of food. The principle is that the dose to be used for a certain type of food should not exceed the amount that is sufficient to kill most harmful insects and bacteria present in it.Different types of food,because of their different molecular（分子）compositions,may require different doses of radiation.According to the passage,killing insets and bacteria present in food by irradiating_________. A:has been completely approved by the FDAB:is being reviewed by the FDAC:is not completely approved by the U.S. governmentD:has been widely adopted in the U.S.
The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.What are nitrates used for? a.They preserve flavor in packaged foods.b.They preserve the color of meats.c.They are the objects of research.d.They cause the animals to become fatter.
The passage is mainly about__________.A.what has brought about less working timeB.why employees want to make more moneyC.why employees have less leisure timeD.what a good employee should be like
The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.What is the best possible title of the passage? a.Drug and Food b.Cancer and Healthc.Food and Healthd.Health and Drug
We must try to preserve the best of our moral values for our children and grandchildren.A:prescribe B:protectC:predict D:purchase
The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.What is the best possible title of the passage?（）A、Drug and FoodB、Cancer and HealthC、Food and HealthD、Health and Drug
单选题The methods of preserving food _____.Adon’t include the method of salting foodBinvolve the use of chemicalsCare not liked by most peopleDare first created by hunters
单选题This passage is mainly about _____.Athe different ways of preserving foodBwhy we must kill the bacteria in our foodCthe importance of preserving foodDhow to preserve food by cooking and salting
单选题The passage mainly tells us _____.Atwo important ways to keep safe in carsBhow air bags work to make cars safeChow seat belts work to make cars safeDwhy we must tie the egg to the skateboard
单选题Cooking is an effective way in preserving food because _____.Acooking always kills the bacteria in foodBcooking can make the food become dryCthe fire in cooking can kill bacteriaDunder the right conditions, cooking will kill bacteria
单选题The food we eat seems to have profound effects on our health.Although science has made enormous steps in making food more fit to eat ,it has, at the same time,made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well,especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is nto a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats,and other food additives,caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this ,penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes,but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration(FDA) has tried repeatedly to control these procedures, the practices continue.What are nitrates used for?（）AThey preserve flavor in packaged foods.BThey preserve the color of meats.CThey are the objects of research.DThey cause the animals to become fatter.
单选题What is the purpose of the passage?ATo tell us just to be ourselves in social lifeBTo introduce ways to learn about the worldCTo explain how people communicate with othersDTo encourage us to meet people of different kinds
单选题By saying “... we’re going to look the other way in terms of what our laws are” (Line 2, Para. 4), Mayor Anderson means “_____”.Awe will turn a blind eye to your if legal statusBwe will examine the laws in a different wayCthere are other ways of enforcing the lawDthe existing laws must not be ignored
单选题Many people are against the use of chemicals to preserve food because ______.Achemicals are not necessary for preserving foodBa small quantity of bacteria in food is good to peopleCthose chemicals that kill bacteria may not be good to peopleDthere are other better ways to preserve food
单选题Which is the best one for preserving food in the following methods?APut the food in a cold place.BCook the food well.CDry the food by sun.DIt is not told.
单选题The passage mainly _____.Acomments on the different opinions in dealing with angerBoffers some advice for dealing with angerCexplains the causes of angerDtell about what happens when one is angry
单选题To be successful in our training program, we must understand the difference between _____.Aa job description and a job specificationBwhat is taught and how it is taughtClearning about skills and training in using themDthe savings in time and the savings in cost