题目列表(包括答案和解析)
完形填空：阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。（共20小题，每小题1.5分）
In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be 46 . Today things are 47 , the world has 
become too 48 . We are using up our natural resources too quickly, and at the same time we are 49 our environment with dangerous chemicals. If we continue to do this, human life on the earth 50 survive.
Everyone 51 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing 52 , more and more fish are caught. We know that if too many trees are cut down, 53 will disappear and nothing will grow on the land. Yet, we 54 to use bigger and more powerful machines to 55 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. 56 , in most countries wastes are 57 put into rivers or into the sea, and there are 58 laws to stop this. We know, too, that if the 59 of the world continues to rise at the present rate, in a few years there will not be enough 60 . What can we do to solve these problems ?
If we eat more vegetables and less 61 , there will be more food available for everyone. Land that is used to grow crops 62 five times more people than land where animals are kept. Our natural resources will 63 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 64 .
Finally, if we educate people to think about the problems, we shall have a better and clearer 65 in the future.
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完形填空：阅读下面短文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。（共20小题，每小题1.5分）
In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed to be 46 . Today things are 47 , the world has become too 48 . We are using up our natural resources too quickly, and at the same time we are 49 our environment with dangerous chemicals. If we continue to do this, human life on the earth 50 survive.
Everyone 51 today that if too many fish are taken from the sea, there will soon be none left. Yet, with modern fishing 52 , more and more fish are caught. We know that if too many trees are cut down, 53 will disappear and nothing will grow on the land. Yet, we 54 to use bigger and more powerful machines to 55 more and more trees.
We realize that if rivers are polluted with waste products from factories, we will die. 56 , in most countries wastes are 57 put into rivers or into the sea, and there are 58 laws to stop this. We know, too, that if the 59 of the world continues to rise at the present rate, in a few years there will not be enough 60 . What can we do to solve these problems ?
If we eat more vegetables and less 61 , there will be more food available for everyone. Land that is used to grow crops 62 five times more people than land where animals are kept. Our natural resources will 63 longer if we learn to recycle them. The world population will not rise so quickly if people use modern methods of birth 64 .
Finally, if we educate people to think about the problems, we shall have a better and clearer 65 in the future.
A. beautiful B. unlimited C. rare D. valuable
A. common B. the same C. changeable D. different
A. crowded B. small C. dirty D. busy
A. protecting B. saving C. polluting D. fighting
A. may not B. will not C. shall not D. could not
A. wonders B. realizes C. consider D. discovers
A. poles B. boats C. methods D. ideas
A mountains B. the sea C. trees D. forests
A. continue B. have C. ought D. go on
A. grow B. plant C. save D. cut down
A. Thus B. However
C. Generally speaking D. Therefore
A. still B. even C. also D. certainly
A. too many B. a few C. some D. few
A. production B. pollution C. population D. revolution
A. houses B. vegetables C. food D. lives
A. fruit B. meat C. fish D. grain
A. feeds B. increases C. supplies D. helps
A. use B. stay C. keep D. last
A. control B. born C. plan D. reward
A. nature B. sea C. planet D. forest
For more than twenty years scientists have been searching for signs of life on other planets. Most of these searches have been done over the radio. The hope is that someone in outer space may be trying to get in touch with us. Scientists also have sent radio and television messages on spaceships traveling through space, on the chance that someone may be receptive to such messages.
Scientists are using powerful radio telescopes to listen to signals from about 1, 000 stars, all within 100 light years of earth. In addition, they will scan（扫视）the entire sky to “listen” for radio messages from more distant stars. Using a computer, they will be able to monitor more than eight channels at one time. Scientists are looking for any signal they stands out from the background noise.
Of the 200 billion stars in the Milky Way galaxy（银河星系）, scientists find that five percent are like our sun. Perhaps half of them have a planet like earth. Such a planet would be a reasonable distance from the star for temperatures to be right for the evolution（进化）of life. Based on the inhabitable（that can be lived in）planets in our galaxy, most scientists agree that chances are likely that one or more of these planets support some life.
However, many scientists wonder whether intelligent（有智力的）life exists on other planets. Some believe that twenty years of searching without any intelligible messages shows that no one is out there. They say that the evolution of intelligence comparable to ours is unlikely.
Other scientists believe that our search hasn’t been long enough to rule out the possibility that intelligent life exists in our galaxy. Although our sun family is only about five billion years old, our galaxy is about 20 billion years old. In that time, some scientists think it is likely that civilization（文明）much more advanced than ours have developed. Perhaps these civilizations send us no signals; perhaps we have not recognized the signals they have sent us. If we hope to find intelligent life, these scientists believe that we have to keep looking.
According to the passage, how many planets in our galaxy might be inhabitable?
A. 5 billion． B. 10 billion.
C. 15 billion. D. 200 billion
The first paragraph in this passage is mainly about ________ .
A. how scientists are looking for signs of life on other planets
B. why scientists are looking for signs of life on other planets
C. where scientists are looking for signs of life on other planets
D. when scientists are looking for signs of life on other planets
The underlined word “monitor” in the passage means“ ________ ”.
A. find B. follow
C. check D. form
Which of these statements is true based on the information in the passage?
A. The earth is one of the oldest planets in our galaxy.
B. Most scientists believe that there is intelligent life on other planets.
C. Scientists are trying different ways to find signs of life on other planets.
D. Scientists don’t believe that there might be life on other planets.
阅读下面短文，掌握其大意，然后从36—55各题所给的四个选项（A、B、C和D）中，选出最佳选项。
Learning experiences happen to us throughout our lives. Not long ago, I had one that I would like to 36 .
I was going to Marblehead with my sailboat team. The team was racing down the highway at 85 mph 37 we realized we were 38 . Luckily, we saw a rest area ahead. I had a brand new $20 bill. I was so 39 because I had never had that kind of cash before. But spending it on 40 seemed like throwing it away. We all rushed into the pizza line. 41 I got a pizza and a drink, and walked to my table. About halfway through the meal, I 42 I had not actually handed any money to the cashier. I had just 43 out, and nobody had noticed. I felt terrible.
My conscience（良心） opened its mouth and swallowed me in one big bite. I couldn’t 44 over it. I just couldn’t go back to the cashier and 45 for my stolen pizza. I was so upset that I 46 to give myself the pleasure of an ice cream in 57 that someone would say,“ Hey, Jeff, why don’t you use the change 48 the pizza instead of that nice, new $20 bill?” I was not so 49___ of my cash now.
For the next two years, whenever I was 50 of the “pizza incident”, I would say to myself, “Don’t think about it....”
I have learned two things from this 51 .Maybe I was a fool for 52 in to my conscience, and being too stupid to appreciate a 53 pizza. But the real lesson is that even if you get away from what you have done, your conscience will 54 up with you.
This reflects the saying, “A coward（懦夫） dies a thousand deaths; a hero dies once.” I was a coward and have felt terrible about that incident at least a thousand times. If I had been a “ 55 ” and gone back to pay for the pizza, I would have felt a little uncomfortable about it only once, or maybe twice.
A. say B. talk C. share D. explain
A. as B. while C. then D. when
A. lost B. tired C. hungry D. anxious
A. excited B. eager C. satisfied D. encouraged
A. rest B. food C. travel D. drink
A. Luckily B. Finally C. Immediately D. Actually
A. thought B. recognized C. noticed D. realized
A. walked B. left C. worked D. found
A. look B. get C. turn D. think
A. ask B. pay C. apologize D. send
A. refused B. wanted C. hoped D. meant
A. hope B. surprise C. anger D. fear
A. into B. with C. for D. from
A. sure B. upset C. proud D. pleased
A. warned B. reminded C. thought D. told
A. experience B. experiment C. story D. mistake
A. turning B. taking C. handing D. giving
A. free B. cheap C. plain D. delicious
A. make B. wake C. catch D. put
A. coward B. fool C. loser D. hero
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