Human beings act in a different way from that of animals just because they can speak while animals cannot. Even the__1__animals cannot do things which to us seem very__2__and which small children, as soon as they learn to__3__, would be able to do.

　　A German scientist, who made__4__for many years with big apes(猿) found that his apes, could use sticks as__5__to pull down bananas which they could not

　　__6__. But they__7__used the stick to get the banana when both the stick and the banana were in__8__at the same time.__9__the banana was in front of them and the stick was__10__them, they__11__use the stick. They could not bear the banana in mind long enough to look__12__and pick up the stick and then use it.

　　The__13__for this is clear. We have words for banana and stick which__14__us to think about these things when they are not in__15__. Even a small child knowing the words "banana" and "stick" has an __16__of their relationship and is able to think of "stick" together with "banana" and to__17__this long enough to pick the stick from behind and use it on the banana.

　　Unable to speak, animals cannot __18__their knowledge of things for long. That is why they often interrupt one line of action to do something else and later

　　__19__it completely. Human beings, on the other hand, use__20__and are able to go after one thing continuously and do it with a clear aim.

　　1. A. biggest B. smallest C. wildest D. cleverest

　　2. A. unusual B. funny C. simple D. difficult

　　3. A. talk B. eat C. walk D. pick

　　4. A. discoveries B. experiments C. speeches D. mistakes5

　　3. A. weapons B. food C. ladders D. tools

　　6. A. see B. eat C. reach D. pull

　　7. A. even B. only C. neverD. rarely

　　8.A. heart B. hand C. view D. mind

　　9. A. Where B. Unless C. If D. Because

　　10. A. behind B. before C. beside D. with

　　11. A. daren't B. couldn'tC. needn't D. shouldn't

　　12. A. around B. in C. forward D. over

　　13. A. question B. reason C. result D. method

　　14. A. attract B. teach C. require D. help

　　15. A. permission B. order C. control D. sight

　　16. A. ability B. aim C. eagerness D. idea

　　17. A. choose B. remember C. suffer D. walk

　　18. A. studyB. leave C. keep D. learn

　　19. A. remind B. forget C. devote D. succeed

　　20. A. hands B. feet C. sticks D. language

　　[答案与解析]

　　1. D 2. C 3. A。人与动物行为举止不同是因为人能讲话而动物不能。甚至是最聪明的动物也不能做会说话的小孩儿都能做的简单事情。 4. B 5. D 6. C。一位多年用猿做实验的德国科学家发现猿会用棍子作为工具把够不到的香蕉弄下来。 7. B 8. C。当猿同时看到棍子和香蕉时,它们才使用棍子。9. C 10. A11. B。如果香蕉在前面而棍子在身后,它们也不会使用棍子。 12. A。look around意为"到处寻找;到处看看"。 13. B14. D 15. D。原因很清楚,当我们看不见香蕉和棍子的时候,我们有语言帮助我们考虑这些东西。 16. D 17. B。甚至是知道"香蕉"和"棍子"这两个词的小孩儿也知道这二者之间的关系,能够同时想起"香蕉"和"棍子"并且能记住足够长的时间,从身后拣起棍子,用它去够香蕉。 18. C。在keep...long短语中,keep是延续性动词,此处指"把物品的知识记得很长时间"。 19. B。上句已经提示,猿的记忆力不好。此空格处指"忘记"。 20. D。与本段开头的Unable to speak相反,人类能使用语言。

　　(文/王洪福；英语辅导报高三版2003-2004学年第50期；版权归英语辅导报社所有，独家网络合作伙伴新浪教育，未经许可，不得以任何形式进行转载。)