问题 选择题

森林破坏引发的生态环境效应有:

①全球气候失调    ②生态环境恶化   ③臭氧破坏加重   ④自然灾害频发 

⑤地震、火山加剧     ⑥生物多样性锐减

A.①②④⑥

B.①②③④

C.②③④⑤

D.③④⑤⑥

答案

答案:A

题目分析:

森林破坏可能引发全球气候失调,①对。生态环境恶化,②对。臭氧破坏是氟氯烃等破坏臭氧层的物质增加造成,与森林破坏无关,③错。森林破坏导致植被保持水土的能力下降,自然灾害频发,④对。地震、火山是内力作用形成,与森林破坏无关,⑤错。物种减少,生物多样性锐减,⑥对。所以A对。B、C、D错。

多项选择题
阅读理解

阅读理解。

      English is fast becoming the language of science around the world, but what is its future among

everyday speakers? One expert points out that the percentage of native English speakers is declining

(降低) while the languages of other rapidly growing regions are being spoken by increasing numbers

of people. But English will continue to remain widespread and important.

     However, British language scholar David Graddol says English will probably drop in dominance(主

导) by the middle of this century to rank,after Chinese, about equally with Arabic, Hindi, and Urdu. "The

number of people speaking English as a first language continues to rise,but it isn't rising nearly as fast as

the numbers of many other languages around the world,simply because the main population group has

been largely in the less developed countries where languages other than English have been spoken," he

says.

     In a recent article in the journal Science, Mr. Graddol noted that three languages that are not near the

top of the list of the most widely spoken now might be there soon. These are Bengali,Tamil,and Malay,

spoken in south and southeast Asia.

     David Crystal,the author of The Cambridge Encyclo?edia of the English L徵guage, says about

1. 5 billion of the world's six billion people speak it as a second tongue compared to the 400 million

native speakers. But another expert on the English language says Mr. Graddol underestimates (低估) the

future of its dominance. "All the evidence suggests that the English language snowball is rolling down a hill

and is getting faster,but nobody quite knows what's going to happen because no language has been in this position before. " he said.

1. In David Graddol' s opinion, English will         .

A. remain widespread and important

B. be more important than any other language

C. lose its dominant position

D. die away in the near future

2. The underlined sentence in the last paragraph implies that          .

A. snowballs will roll down faster than language balls

B. the English language snowball is rolling down faster than any time in the past

C. English language will soon drop in dominance

D. more and more language users will choose English

3. How many experts express their ideas about the future of English in the passage?

A. 2.

B. 3.

C. 4.

D. 5

4. According to David Graddol,which of the folowing will possibly be one of the languages that

    will be most widely spoken?

A. Malay.  

B. Arabic.

C. Urdu.

D. German.

5. What should be the best title for the passage?

A. English Remaining the Dominant Position

B. The Future of English? Who Knows?

C. Opinions from Different Experts

D. The English Language Snowball Rolling Down