1970 was the World Conservation(保护)Year. Everyone must know that the world is in danger.   16   is one example of the   17 .At one time there were 1,300 different kinds of trees and flowers in Holland(荷兰),but now only 866 remain(继续存在),   18 have been destroyed by modern man. We are changing the earth, the air and the water, and    19 that grows and lives. If we go on like this , we shall destroy ourselves.
What will happen in the future? Perhaps   20   is more important to ask “What must we do now?” The people who will be living in the world tomorrow are   21  young of today. A lot of them know that conservation is necessary. Many are helping to save   22 .
Now fifteen million young people in many countries are studying   23  and the country around him. In some countries they spend much time as “conservation volunteers.” They plant trees and help to   24  wild birds and animals.
But everyone,   25 young people, must work to save our world.
【小题1】
A.HereB.ItC.HeD.There
【小题2】
A.troubleB.questionC.problemD.difficult
【小题3】
A.someB.othersC.the otherD.the others
【小题4】
A.everythingB.nothingC.somethingD.all things
【小题5】
A.thisB.thatC.oneD.it
【小题6】
A.aB.anC./D.the
【小题7】
A.ourselvesB.our worldC.our livesD.living things
【小题8】
A.manB.menC.a manD.the men
【小题9】
A.findB.protectC.catchD.keep
【小题10】
A.not onlyB.exceptC. alsoD.together with
Four men who would become fathers were in a hospital waiting room while their wives were in labor (分娩). The nurse arrived and proudly said to the first man, “Congratulations, sir. You’re the father of twins!”
“What a coincidence (巧合)! I work for the Minnesota Twins Baseball teams!”
Later the nurse returned and congratulated the second father on the birth of his triplets (三胞胎).
“Wow! That’s unbelievable! I work for the 3M Company.”
An hour later, the nurse returned to congratulate the third man on the birth of his quadruplets (四胞胎). Surprised, he only could answer, “I don’t believe it! I work for the Four Seasons Hotel!”
  After this, everyone turned to the fourth man who had just fainted (晕). The nurse ran fast to his side. As he slowly came to himself, they could hear him speak in a very low voice over and over, “I should never have taken that job at 7-Eleven. I should never have taken that job at 7-Eleven. I should never have taken that job at 7-Eleven.”
【小题1】Why were the fathers there?
A.They were waiting for their wives.  
B.They were seeing doctors.
C.They were waiting for their babies to be born.  
D.They were working at men nurses there.
【小题2】Which of the following is true about the third man?
A.He thought the nurse made a mistake. 
B.He was very surprised at the nurse’s words.
C.He didn’t want to have these babies.  
D.He should never have worked at 7-Eleven.
【小题3】Why did the fourth man faint when he heard what the nurse told the third man?
A.Hew was afraid of having so many babies.  
B.He was seriously ill.
C.He was too excited.
D.He was very glad to have 7 babies.
【小题4】At least how many babies would be born according to the story?
A.9.B.10.C.11.D.16.
In the summer of 1978 an English man named Steven was driving his tractor through a field of wheat when he discovered something strange. Some of his wheat was lying on the ground. The flattened wheat formed(形成)a circle about six meters across . Around this circle were four smaller circles of flattened wheat.
  Three years later a farmer who lived nearby discovered almost the same circles in one of his fields. These circles were larger—nearly 15 meters across . That same year , another English farmer discovered three circles of flattened wheat on his land—one large circle between two small circles. During the following years, farmers in England found circles in their fields more and more often.
  The circles are called “crop circles” because they usually appear in fields of wheat or corn. The wheat in the circles lies on the ground but is never broken; it keeps on growing, and the farmers can later harvest it. Farmers always discover the crop circles in the morning, so the circles probably form at night. They appear only in the months from May to September. What causes the crop circles?
  At first, people thought that some kids were making them as a joke, or that farmers were making them to attract tourists.(In fact, in 1991, two men said they made the circles themselves, but many scientists don’t believe them.) People tried to copy them: They tried to make circles exactly like the ones the farmers had found. They couldn’t do it. They couldn’t enter a field of wheat without leaving tracks, and they couldn’t flatten the wheat without breaking it.
  Several times people reported seeing stranger objects near the fields where crop circles later appeared. Many people believe that these crop circles are the messages sent by living things from outer space(外层空间)or the marks left by their spaceships.
  Scientists who have studied the crop circles try to find out what causes them. In the summer of 1990 some scientists spent three weeks in the part of England where many circles have appeared. They had all the latest high-tech equipment(最新高科技设备). The equipment—worth 1.8 million dollars—got nothing. But one night, as the scientists were watching a field, crop circles formed in the field behind them, which were quite different from the others. The scientists had neither seen nor heard anything.
  When Steven discovered the crop circles on his land in 1978, he said, “It was just like something that had landed in the field from the air and gone back up again. I don’t know what to make of these things.”
  Crop circles have appeared in England, Japan, the United States and Russia. Experts from all over the world have studied them, and they say what Steven said: They don’t know what to make of these things.
【小题1】Which picture is probably the one formed in the field behind the scientists?

【小题2】“Flattened wheat” means ___________.
    
A.broken wheatB.lying wheat
  
C.harvested wheatD.growing wheat
【小题3】The passage is mainly about something ___________ .
A.that is done by living things from outer space
B.that cannot be solved but found all around the world
C.that cannot be made clear or understood
D.that is discovered and copied by the farmers
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