问题 单项选择题

近年来中国不断增加对非洲的投资,引起西方国家不安,“中国掠夺非洲资源”之类的批评不绝于耳。对此一位中国官员反驳说:“批评的一个最重要的依据是中国从非洲拿石油,但去年非洲出口的全部石油,中国只占8.7%,欧洲占36%,美国占33%。如果说进口8.7%都有掠夺资源之嫌,那么36%和33%应该怎么来看呢” 加入以下哪项陈述,这位官员可以推出“中国没有掠夺非洲资源”的结论( )

A.欧洲和美国有掠夺非洲资源之嫌

B.欧洲和美国没有掠夺非洲的资源

C.中国和印度等国家对原料的需求使原料价格上涨,为非洲国家带来了更多收入

D.非洲国家有权决定如何处理自己的资源

答案

参考答案:B

解析: 由题干可知,出口欧洲和美国的石油比中国多,因此如果B项正确,则中国没有掠夺非洲资源,而A、C、D作为假设都无法推出这一结论。因此选B。

完形填空

Why don’t birds get lost on their long migratory (迁移的) flights? Scientists tried their best to find the   1  to this question for many years. The reasons have been discovered only lately.

    2  ago experiments showed that birds depend on the sun to guide them   3  . But what about birds that fly mainly by night?  4  with man-made stars have   5  that certain night-flying birds are able to follow the   6  in their long distance flights.

  One such   7  , a warbler (鸣禽), had spent its lifetime in a   8  and had never flown under a natural sky. Yet is showed its   9  by birth to use the stars for guidance. The bird's cage was put under a man-made star-filled sky at migration   10 . The bird tried to fly   11  the same direction as   12  taken by other birds in the building. Any 13 in the position of the make-believe (虚构的) stars   14  a change in the direction of its flight.

  Scientists think that warblers,  15 flying in daylight, use the sun for guidance. But stars are clearly their important   16  of navigation(导航). What do they do when the stars are   17  behind the clouds? Clearly, they find their way by such land   18  as mountains, coastlines and river courses. But when it's too   19  to see these, the warblers circle  201  , unable to find out where they were.

1. A. reply           B. answer      C. discovery      D. replies

2. A. Not long        B. Long       C. Centuries       D. Years

3. A. during the night                B. during daylight hours

C. in winter                     D. in the dark

4. A. Examinations    B. Labs       C. Tests           D. In the dark

5. A. been proved     B. found       C. been found      D. proved

6. A. stars           B. moon        C. route          D. sun

7. A. star            B. scientist      C. bird           D. flight

8. A. forest          B. cage         C. nest           D. cave

9. A. strength        B. ability        C. experience     D. practice

10. A. time          B. place         C. way          D. season

11. A. to            B. towards       C. in            D. under

12. A. that          B. which         C. one           D. it

13. A. one          B. change        C. way           D. bird

14. A. caused        B. gave          C. resulted        D. meant

15. A. for           B. when         C. after           D. they are

16. A. ways         B. means         C. objects        D. homes

17. A. shown        B. covered        C. moved         D. hidden

18. A. areas         B. surface         C. marks         D. signs

19. A. far           B. high           C. dark          D. bright

20. A. helplessly     B. quickly         C. easily         D. freely

单项选择题 A型题