题目内容
Why would an animal kill itself? It seems a strange question, and yet it is one that has made some scientists curious for a long time. For there is a kind of animal called lemming(旅鼠), that periodically killed themselves together, and no one knows just why!
The small creatures which live in the Scandinavian mountains, feed on a diet of roots and special insects and live in nests they dig underground. When their food supply is large, the lemmings live a normal and undisturbed life.
However, when the lemmings’ food supply becomes too low to support the population, a singular migration(迁徙)begins. The lemmings leave their nests in groups. Great numbers of them begin to travel across the Scandinavian plains, a journey that may last weeks. The lemmings eat everything in their path, continuing their long march until they reach the sea.
The reason for what follows remains unbelievable to naturalists. Upon reaching the coast, the lemmings do not stop but swim by the thousands into the sea. Most stay afloat only a short time before they tire, sink and drown.
A common theory for this mass self-killing is that the lemmings do not realize that the ocean is such a huge body of water in their cross-country journey, the animals must cross many smaller bodies of water, such as rivers and small lakes. They may think that the sea is just another such swimmable path to go through. But no final answer has been found to the strange happening.
1.The passage is mainly about______.
A. how lemmings find food
B. why animals kill themselves
C. the lemmings’ self-killing
D. the food supply in the Scandinavian mountains
2.A reason for the lemmings’ self-killing might be that they______.
A. go mad from a lack of food
B. hope to find fish for food
C. decide to reduce the population
D. think they can cross the sea
3.Why are scientists curious about the lemmings’ behavior?
A. Because they are the only animals that live in Scandinavia.
B. Because it is very unusual for animals to kill themselves.
C. Because of the amount of food they can eat on their march to the sea.
D. Because they can gather together in such huge numbers.
4.The underlined word “singular” means______.
A. unusual B. single C. wonderful D. common
1.C
2.D
3.B
4.A
【解析】
试题分析:文章大意:介绍奇异的旅鼠集体自杀现象及对其原因的推测。
1.主旨大意题第一段引出旅鼠定期集体自杀的话题,然后介绍他们的习性,接下来因为食物供应不足而进行迁徙,到达海边,然后集体渡海,体力不支死亡。最后一段是人们对于这种现象的推测。文章主要介绍的是旅鼠的自杀现象。选C
2.细节理解题:根据最后一段:旅鼠可能没有意识到海洋那么广阔,他们可能认为大海不过是可以游过去的。选D
3.推理判断题根据文章最后一句:But no final answer has been found to the strange happening.但是对于这种奇特现象至今还没有最终的解答,导致科学家们对于旅鼠的异常行为非常好奇。选B。
4.词义猜测题旅鼠的这次迁徙导致了不同于寻常动物迁徙的结果,所以这是unusual: 不同寻常的;非同寻常的。single: 单一的;单身的;单程的;wonderful: 奇妙的;极好的;common: 共同的;一般的;普通的。选A
考点:考查科普类文章阅读。
There is one word that is on the lips of Americans , day and night , “Sorry”.
One time as I was walking on the street , a young man ran by hurriedly , brushing against my handbag . Even as he continued on his way , he turned back and said “sorry” to me . Even in a rush , he didn’t forget to apologize .
One day , after I bought some apples , the salesman was giving me the change , but I wasn’t ready for it , and a coin dropped on the ground, “I’m sorry ,” he said while bending down to pick it up . I was puzzled —why would he apologize when it was my fault ?
Another time , I stepped on a man’s foot in an escalator . At the same time , we both said “sorry” . I thought it interesting : was it really necessary for him apologize ?
Later on , an American friend explained to me that according to the American ideas, the escalator is public place which everyone should be able to stand in . After someone occupies a position in the escalator , making it difficult for someone else to find a place to stand in , isn’t it necessary to express an apology ?
During my stay in America , I gradually realized that when friction (摩擦) occurs in daily life , Americans don’t care much about who is responsible . If someone is troubled , a “sorry” is always necessary . Even if the other person is hurt , the “sorry” would cool tempers . Perhaps this is why I never saw anyone quarreling on the buses , subways or streets in America .
1.When I was walking in the street , ____ .
A.a young man wanted to rob me of my bag |
B.a young man ran by and wanted to brush my bag |
C.a young man said sorry to me for touching my bag |
D.a young man came hurriedly to help me with my bag |
2.When the salesman gave me the change , _____
A.I purposely didn’t want to accept it from the salesman |
B.the salesman purposely didn’t want to pass it to me |
C.I was slower to accept it than the salesman to give it to me |
D.the salesman was slower to give it to me than I could accept it |
3.The man on whose feet I stepped apologized to me because ____ .
A.the escalator is a public place |
B.the man was very afraid of me |
C.the “sorry” said to me was for everyone |
D.there wasn’t enough room to get my feet in |
4.In this passage , the author seems to feel _____ the Americans’ “sorry”.
A.angry with |
B.disappointed with |
C.interested in |
D.approving of |