问题 单项选择题

爱尔兰有大片泥煤蕴藏量丰富的湿地。环境保护主义者一直反对在湿地区域采煤。他们的理由是开采泥煤会破坏爱尔兰湿地的生态平衡,其直接严重后果是会污染水源。然而,
这一理由是站不住脚的。据近50年的相关统计,从未发现过因采煤而污染水源的报告。
以下哪项,如果为真,最能加强题干的论证( )

A.在爱尔兰的湿地采煤已有200年的历史,其间从未因此造成水源污染
B.在爱尔兰,采煤湿地的生态环境和未采煤湿地没有实质性的不同
C.在爱尔兰,采煤湿地的生态环境和未开采前没有实质性的不同
D.爱尔兰具备足够的科技水平和财政支持来治理污染,保护生态

答案

参考答案:C

解析: 题干要论证的结论是:环境保护主义者关于采煤会破坏爱尔兰湿地的生态平衡的理由是站不住脚的。在诸选项中,C项如果为真,能得出结论:在湿地采煤并没有改变生态环境。其余各项都有能加强题干的论证,但都不能得出这一结论。例如,A项如果为真,则从过去湿地采煤没有造成水源污染,并不能得出将来湿地采煤不会造成水源污染。再例如,B项如果成真,并不能保证在湿地采煤不改变生态环境,因为无法排除这种可能性:采煤湿地的生态环境虽然和未采煤湿地没有实质性的不同,但却和自身未开采的生态环境有实质性的不同。D项说的是治防能力,很明显与是否产生污染无关。

完形填空
完形填空。
     Suppose (假定) every person on Earth ate only one kind of food. And maybe one year that food
  couldn't __1__. If that happened, man would soon __2__.
    Luckily, man doesn't __3__ that problem. But another animal may. The animal is the giant (巨大的)
 panda, one of the world's most-loved animals.
    Dr Thomas Soderstrom, a scientist, has __4__for the first time that the bamboo (竹子) the giant pandas
  eat is dying. As a result, many of the pandas are also dying of being __5__. Scientists estimate (估计)
 that so far more than 140 giant pandas have died. This number may be __6__ one-quarter of the world's
  giant panda population. Between 400 and 1000 giant pandas are __7__ to live in mountains.
    Giant pandas were once more __8__ all over many parts of Asia (亚洲). Now they are only in small
  parts of China.
    Can the wild pandas be __9__?
    The scientists want to find out more about the animals' food. They want to see whether the pandas are
  able to __10__ their food while the bamboo is dying.
    Chinese scientists are trying to raise (饲养) more pandas in zoos. The first baby panda was born in the Beijing Zoo in the fall of 1978.
(    ) 1. A. found
(    ) 2. A. break
(    ) 3. A. want
(    ) 4. A. found
(    ) 5. A. cold
(    ) 6. A. almost
(    ) 7. A. thought
(    ) 8. A. big
(    ) 9. A. kept
(    ) 10. A. have
B. be found
B. live
B. work
B. invented
B. tired
B. already
B. believed
B. liked
B. saved
B. catch
C. founded
C. die  
C. answer  
C. known  
C. hungry  
C. hardly  
C. seen  
C. interesting
C. made  
C. change  
D. be founded  
D. lose        
D. face        
D. studied    
D. ill        
D. really      
D. said        
D. common      
D. taken      
D. get        
多项选择题