问题 选择题

读图,回答题。

小题1:N处的地质构造为

A.背斜

B.向斜

C.断层

D.谷地小题2:在图中水循环参与下,①处的岩石可转化为②处的岩石,与此有关的地质作用是

A.岩浆活动

B.变质作用

C.固结成岩

D.重熔再生小题3:如图中森林被砍伐,则水循环环节中水量增多的是

A.a

B.b

C.c

D.d

答案

小题1:B

小题2:C

小题3:D

题目分析:

小题1:根据图示背斜岩层向上拱起;向斜岩层向下弯曲。N处岩层向下弯曲,所以N处的地质构造为向斜。

小题2:图示①处为岩浆喷发而形成的岩石属于岩浆岩,②处的岩石属于沉积岩。由岩浆岩变为沉积岩的地质过程是固结成岩。

小题3:森林被砍伐,就丧失了森林的含蓄水源的作用。这样一遇降水地表径流就会增加。

点评:本题难度适中。要求学生熟练掌握地质构造与构造地貌、岩石类型、水循环及对地理环境的影响相关知识。

单项选择题

Questions 53 to 57 are based on the following passage:The Internet can make the news more democratic, giving the public a chance to ask questions and seek out facts behind stories and candidates, according to the head of the largest US on-line service.’But the greatest potential for public participation is still in the future,’ Steven Case, chairman of America On-line, told a recent meeting on Journalism and the Internet sponsored by The Freedom Forum, though some other speakers say the new technology of computers is changing the face of journalism, giving reporters access to more information and their readers a chance to ask questions and turn to different sources.’You don’t have to buy a newspaper and be confined to the four comers of that paper anymore.’ Sam Meddis, on-line technology editor at USA Today, observed about the variety of information available to computer users.But the speakers noted the easy access to the internet also means anyone can post information for others to see.’Anyone can say anything they want, whether it’s right or wrong.’ said Case. Readers have to determine for themselves who to trust. ’In a world of almost infinite voices, respected journalists and respected brand names will probably become more important, not less,’ Case said.’The internet today is about where radio was 80 years ago, or television 50 years ago or cable 25 years ago, ’he said. But it is growing rapidly because it provides people fast access to news and a chance to comment on it.

It can be inferred from this passage that may NOT be regarded as the advantages of the internet.

A.the news can be made more democratic

B.anything can be posted on the internet for others to see

C.the public can turn to different sources

D.the public can get a chance to ask questions

单项选择题