共用题干Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved(溶解)and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator(赤道)!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs(源泉)and from deposits of rock salt. The concentration(浓度)of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon(加仑)of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation(蒸发)of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells(井) down to the salt beds. Pure water is pumped down(抽进去)through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.If all the oceans were dried up,the salt thus obtained would be extremely great in size.A:Right B:Wrong C:Not mentioned

共用题干
Where Has the Salt Come from?

Every now and then,we meet a fact about our earth that makes us feel strange and no
answer for the fact has yet been found.Such a fact is the existence of salt in the oceans.
How did it get there?
We simply do not know how the salt got into the ocean!We do know,of course,that
salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's
surface is constantly being dissolved(溶解)and is passing into the ocean.
But we do not know whether this can explain the huge quantity of salt in oceans.If all
the oceans were dried up,enough salt would be left to build a wall 180 miles high and a
mile thick. Such a wall would reach once around the world at the Equator(赤道)!
The common salt that we all use is produced from seawater or the water of salt lakes,
from salt springs(源泉)and from deposits of rock salt. The concentration(浓度)of salt in
seawater ranges from about three percent to three-and-one-half percent. The Dead Sea,
which covers an area of about 340 square miles,contains about 11,600,000,000 tons of
salt!
On the average, a gallon(加仑)of seawater contains about a quarter of a pound of
salt.The beds of rock salt that are found in various parts of the world were all originally
formed by the evaporation(蒸发)of seawater millions of years ago. It is believed that the
thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had
been evaporated.
Most commercial salt is obtained from rock salt.The usual method is to drill wells(井)
down to the salt beds. Pure water is pumped down(抽进去)through a pipe. The water
dissolves the salt and it is forced through another pipe up to the surface.

If all the oceans were dried up,the salt thus obtained would be extremely great in size.
A:Right
B:Wrong
C:Not mentioned

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解析:

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Water is the __46___ of all the things we eat and drink . Not many people understand this but __47____ quite true . The human body can go without ___48___ for a long time . We’ve got many examples for this . Yet two __49___ three days without water can usually make people __50____ . Man can’t live __51____ water .Many people don’t understand how ___52__ water the human body needs __53___ work well , and many people , especially young people , do not drink enough , ___54__ in very hot weather . Our body has mostly water , about 65% to 75% . That is to say about two thirds of our body is water . When we do sports , some of the water will get away from our body . __55 _ we don’t drink some water , we won’t have enough water. And if we don’t have enough water , we’ll feel tired and many of us will get ill . So you know how important water is to us .46.___________( )46. A. importantB. most importantC. more importantD. different

BThe world is not only hungry,it is also thirsty for water. this may seem strange to you,since nearly 75% of the earth is covered with water. But about 97% of this water is sea water.Man can only drink and use the other 3% fresh water that comes from rivers,lakes,under-ground and other places. And we cannot even use all of that,because some of this fresh water has been made dirty.At the moment,this small amount(数量) of fresh water is still enough for us. However,our need for water is getting greater and greater. Only if we take steps to solve this problem now,we can get away from a serious world water shortage later on. The people of the world cannot have an enjoyable life without enough clean water.On one hand we should stop wasting this little water of ours,on the other hand we should find ways to reuse it,but this has not been done widely.Today,in most large cities,water is used only once and it then returns to the sea or runs into underground places.lf we can make it clean again,it can be used once more just as if it were fresh from a spring.But even if large cities reuse its water,we still would not have enough in the future. Where.could we turn to next for water? To the ocean! How can we do to make use of this great a-mount of sea water? We can take the salt from the water to make it fresh.So if we take all these steps,we'll be in no danger of drying up!( )26. Why does the writer say that the world is thirsty for water?A. The amount of fresh water is really very small.B. The people of the world waste too much water.C. The people of the world have to drink a lot of water every day.D. There are too many people in the world needing water.

Passage ThreeEducation is not an end, but a means to an end. In other words, we do not educate children only for the purpose of educating them; our purpose is to prepare them for life. As soon as we realize this fact, we will understand that it is very important to choose a system of education which will really prepare children for life. It is not enough just to choose the first system of education one finds, or to continue with one's old system of education without examining it to see whether it is in fact suitable or not.In many modern countries, it has for some time been fashionable to think that by free education for all—whether rich or poor, clever or stupid—one can solve all the problems of society and build a perfect nation. But we can already see that free education for all is not enough; we find in such countries a far larger number of people with university degrees than there are jobs for them to fill. Because of their degrees, they refuse to do what they consider "low" work; and, in fact, work with the hands is thought to be dirty and shameful in such countries.But we have only to think a moment to understand that the work of a completely uneducated farmer is far more important than that of a professor. We can live without education, but we will die if we have no food. If no one cleaned our streets and took the rubbish away from our houses, we would have terrible diseases in our towns. In countries where there are no servants because everyone is ashamed to do such work, scientists have to waste much of their time doing housework.In fact, when we say that all of us must be educated to prepare for life, it means that we must be educated in such a way that, firstly, each of us can do whatever job is suited to his brain and ability, and secondly, we can realize that all jobs are necessary to society, and it is very bad to be ashamed of one's work, or to scorn someone else's. Only such a type of education can be called valuable to society.44. Education is______.A. a purposeB. a meansC. fashionableD. the first system

Most of us,when we reached our teens,started looking forward to the day when we would occupy places of our own,far from the confines of our families. We saw this moving away as a chance to strike out on our own,to grow,to spread out wings and experience freedom. At the same time,we regarded this independence as temporary-the thing to do until we found the perfect mate and married. Over the years,many millions of people have made this passage from one family to another,with just a brief,often nervous interval of independence in between. But recently,more and more people have begun to challenge the concept that living together is better than living alone. Being single is now accepted as an alternative lifestyle-one that is natural,rewarding,and complete. In fact,being single has become almost fashionable.

Well,the day we offer stock for sale is the day we will see how much______there is in our company. A fact ;B fate ;C faith

Many of our most deeply ______ opinions are held simply as a result of the fact that we happen to have been “brought up”to them.A: rootedB: rootC: rootingD: roots

共用题干Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved(溶解)and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator(赤道)!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs(源泉)and from deposits of rock salt. The concentration(浓度)of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon(加仑)of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation(蒸发)of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells(井) down to the salt beds. Pure water is pumped down(抽进去)through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.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 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. Each day we get a lot of messages from______.A: sports newsB: our decisions and opinionsC: mass communicationD: our messagesE: source of informationF: the mass media

共用题干Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved(溶解)and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator(赤道)!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs(源泉)and from deposits of rock salt. The concentration(浓度)of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon(加仑)of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation(蒸发)of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells(井) down to the salt beds. Pure water is pumped down(抽进去)through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.Beds of rock salt are found in every part of the world.A:Right B:Wrong C:Not mentioned

共用题干Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved(溶解)and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator(赤道)!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs(源泉)and from deposits of rock salt. The concentration(浓度)of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon(加仑)of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation(蒸发)of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells(井) down to the salt beds. Pure water is pumped down(抽进去)through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.The author is sure that the dissolved salt from the earth's surface is the only source of the huge quantity of salt found in oceans.A:Right B:Wrong C:Not mentioned

共用题干Where Has the Salt Come from?Every now and then,we meet a fact about our earth that makes us feel strange and no answer for the fact has yet been found.Such a fact is the existence of salt in the oceans. How did it get there?We simply do not know how the salt got into the ocean!We do know,of course,that salt is water-soluble,and so passes into the oceans with rainwater.The salt of the earth's surface is constantly being dissolved(溶解)and is passing into the ocean.But we do not know whether this can explain the huge quantity of salt in oceans.If all the oceans were dried up,enough salt would be left to build a wall 180 miles high and a mile thick. Such a wall would reach once around the world at the Equator(赤道)!The common salt that we all use is produced from seawater or the water of salt lakes, from salt springs(源泉)and from deposits of rock salt. The concentration(浓度)of salt in seawater ranges from about three percent to three-and-one-half percent. The Dead Sea, which covers an area of about 340 square miles,contains about 11,600,000,000 tons of salt!On the average, a gallon(加仑)of seawater contains about a quarter of a pound of salt.The beds of rock salt that are found in various parts of the world were all originally formed by the evaporation(蒸发)of seawater millions of years ago. It is believed that the thick rock-salt deposits were formed after about nine-tenth of theY volume of seawater had been evaporated.Most commercial salt is obtained from rock salt.The usual method is to drill wells(井) down to the salt beds. Pure water is pumped down(抽进去)through a pipe. The water dissolves the salt and it is forced through another pipe up to the surface.We have not fully understood how salt got into the ocean.A:Right B:Wrong C:Not mentioned

Attention has already been drawn to the fact _________a single harmonization proposal can take decades to come to fruition.A. that B. as C. which D. where

The fact remains__we are behind many others.A.thatB.whyC.whereD.how

资料:For nearly a century, Hilton Worldwide has offered business and leisure travelers the finest in accommodations, service, amenities and value.We know that great guest experiences begin with Team Members who feel appreciated, valued and respected. That's what you can expect at Hilton Worldwide, where we have created a culture of excellence, continuous improvement, and innovation that helps our 300,000 Team Members reach their fun potential.For nearly a century, Hilton Worldwide has been a legendary symbol of hospitality. Our brands are recognized around the globe for unparalleled guest service, delivered by talented Team Members with a reputation for innovation, integrity and excellence. We offer our Team Members unparalleled access to an array of rich experiences, knowledge and opportunities that are invaluable to their growth. Join us now in one of these career areas.We invite you to join us in locations throughout North America, where you can help us fulfill Conrad Hilton's Vision to “fill the Earth with the light and warmth of hospitality” and provide the world-class guest service for which Hilton Worldwide is known.What benefits can team members from Hilton get?A.Travelling opportunities.B.A decent job.C.Various experiences, knowledge and chances.D.High income.

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.Paragraph 2________A:Importance of Classroom LearningB:Television一A Rich Source of InformationC:Advertisements as Important Messages from the Mass MediaD:Various Messages One May Receive Each DayE:Media一Means to Communicate MessagesF:Importance of 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 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.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 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.Television,radio and books are all important media of________.A:sports newsB:our decisions and opinionsC:mass communicationD:our messagesE:source of information F: the mass media

共用题干第三篇Treat Teenagers with RespectMy husband Bill and I have received comments from other parents expressing their sympathies ever since Douglas's 14th birthday,since our son is a teenager now. We've heard a lot,such as "Well,when kids become teenagers,they are awful,just do your best to go through this tough period."or"I know he's a good child,but just wait,now that he's a teenager."I know that teenagers at times can be difficult to deal with,but I'm in my mid-thirties and I can also be tough.We are concerned about the future of our kids and want today's children to know that we do love and care them and that there are opportunities waiting for them. Nevertheless,when they just start their journey toward adulthood, we stand there expecting them to make mistakes."Just like we knew they would."We tell them to respect themselves and to say no to drugs,yet we are not setting a positive example by showing our respect for them,and fail to treat them with consideration and kindness.At times I have felt guilty of this behavior but I now realize that the more I see each person as a person,the more I am pleasantly surprised in some way or another. For instance,a few days ago Bill and I were having dinner at our favorite restaurant to celebrate my birthday and three teenage boys entered and sat down right beside us.The first thought came into my mind,I must admit,was,"Gosh, there goes our peaceful and quiet dinner."But,the fact proved I was very wrong!The three teenagers were quiet,well behaved and even left a nice tip for the waiters.Once I looked beyond their colored hair and the loose jeans that were practically falling off,I saw what fine people these young men were.Many parents are upset about the fact that teenagers adore sports stars and pop singers,yet they themselves,perhaps unknowingly,treat their kids with disrespect.As far as I think we really shouldn't complain unless we give them something better to go after.Who are responsible for the fact that pop singers and sports stars become heroes of teenagers?A:The society.B:Themselves.C:Their parents.D:All of the above.

Very few of our birds stay with us the year round.Some come to us in the winter from the cold?north.Others come from the south to spend the summer with us.How do they know the way?Suppose?you were told to find your way to a place hundreds of miles away,do you think you could do it?Yet birds travel over mountains,forests,lakes and even across the oceans,and do not stray from?the path.They find their way back in the spring to the same orchard(果园)and the very trees where?they nested the summer before.It is wonderful how quickly birds travel such long distances from their summer homes to their?winter ones.Some birds have been known to fly hundreds of miles in a day.But others travel much?more slowly.Why do birds undertake these long journeys twice a year?Perhaps cold weather and lack of?food drive them from us in the autumn,but we cannot tell why they leave the sunny south to come?back to us in the spring.We know only that many of them like to make their nests and rear their?young in the north.We are sorry to see them go,but we know that when winter is over they will come back to us.In which season do we have most birds to stay with us?A.In spring.B.In summer.C.In winter.D.We don't know.

Very few of our birds stay with us the year round.Some come to us in the winter from the cold?north.Others come from the south to spend the summer with us.How do they know the way?Suppose?you were told to find your way to a place hundreds of miles away,do you think you could do it?Yet birds travel over mountains,forests,lakes and even across the oceans,and do not stray from?the path.They find their way back in the spring to the same orchard(果园)and the very trees where?they nested the summer before.It is wonderful how quickly birds travel such long distances from their summer homes to their?winter ones.Some birds have been known to fly hundreds of miles in a day.But others travel much?more slowly.Why do birds undertake these long journeys twice a year?Perhaps cold weather and lack of?food drive them from us in the autumn,but we cannot tell why they leave the sunny south to come?back to us in the spring.We know only that many of them like to make their nests and rear their?young in the north.We are sorry to see them go,but we know that when winter is over they will come back to us.How far do birds usually travel from their summer homes to their winter ones?A.About hundreds of miles.B.About thousands of miles.C.The distance that takes a bird to fly the whole morning.D.The passage does not tell us.

Very few of our birds stay with us the year round.Some come to us in the winter from the cold?north.Others come from the south to spend the summer with us.How do they know the way?Suppose?you were told to find your way to a place hundreds of miles away,do you think you could do it?Yet birds travel over mountains,forests,lakes and even across the oceans,and do not stray from?the path.They find their way back in the spring to the same orchard(果园)and the very trees where?they nested the summer before.It is wonderful how quickly birds travel such long distances from their summer homes to their?winter ones.Some birds have been known to fly hundreds of miles in a day.But others travel much?more slowly.Why do birds undertake these long journeys twice a year?Perhaps cold weather and lack of?food drive them from us in the autumn,but we cannot tell why they leave the sunny south to come?back to us in the spring.We know only that many of them like to make their nests and rear their?young in the north.We are sorry to see them go,but we know that when winter is over they will come back to us.The underlined part"stray from the path"means__________.A.lose its wayB.stay on the pathC.keep away from the pathD.fly along the path

Very few of our birds stay with us the year round.Some come to us in the winter from the cold?north.Others come from the south to spend the summer with us.How do they know the way?Suppose?you were told to find your way to a place hundreds of miles away,do you think you could do it?Yet birds travel over mountains,forests,lakes and even across the oceans,and do not stray from?the path.They find their way back in the spring to the same orchard(果园)and the very trees where?they nested the summer before.It is wonderful how quickly birds travel such long distances from their summer homes to their?winter ones.Some birds have been known to fly hundreds of miles in a day.But others travel much?more slowly.Why do birds undertake these long journeys twice a year?Perhaps cold weather and lack of?food drive them from us in the autumn,but we cannot tell why they leave the sunny south to come?back to us in the spring.We know only that many of them like to make their nests and rear their?young in the north.We are sorry to see them go,but we know that when winter is over they will come back to us.Why do birds undertake those long journeys twice a year?A.It is because of cold weather in winter.B.It is because of lack of food in autumn.C.It is because of the hot weather in summer.D.There's some reason that is still not known clearly.

Our eating habits are very important for good health and a strong body.There are times when?most of us would rather eat sweets and ice-cream than meat and rice.Sweets and ice-cream are not?bad if we eat them at the end of a meal.If we eat them before a meal,they may take away our appe-tite(食欲)~It is important for us to eat our meals at the same time each day.When we feel hungry,it is a sign that our body needs food.When we feel angry or excited,we may not want to eat.A long time ago,in England,some judges used to decide whether a man was telling the truth by giving him some dry bread.If the man could not eat the bread,it showed that he was telling lies.Although this seems very strange and rather foolish,it is indeed a very good way of finding out the fact.A man who is worrying about something has difficulty in eating anything dry.Because he is worrying,he loses his appetite and does not want to eat.A man who is worrying__________.A.has a better appetiteB.likes to tell liesC.likes to eat ice-creamD.has a poor appetite

单选题How did the immigrants in Salt Lake City feel about “Operation Safe Travel”?AGuilty.BOffended.CDisappointed.DDiscouraged.

问答题Practice 2  We are writing this letter to tell you that up to now no news has come from you about the goods we ordered on May 25th. As you have been informed in our letters, our customers are in urgent need of those machine. They are asking repeatedly for an early delivery(交货). We hope that you will try your best to arrange all this without further delay.