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His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

正确答案: B

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OG11-45,-59

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楼主
发表于 2008-7-27 11:37:00 | 只看该作者

OG11-45,-59

45.According to some analysts, the gains in the stock market reflect growing confidence that the economy will avoid the recession that many had feared earlier in the year and instead come in for a “soft landing,”followed by a gradual increase in business activity.

A. that the economy will avoid the recession that many had feared earlier in the year and instead come

B. in the economy to avoid the recession, what many feared earlier in the year, rather to come

C. in the economy’s ability to avoid the recession, something earlier in the year may had feared, and instead to come

D. in the economy to avoid the recession many were fearing earlier in the year, and rather to come

E. that the economy will avoid the recession that was feared earlier this year by many, with it instead coming

答案是A
        
但我不明白为什么A中是had feared earlier in the year而不是feared earlier in the year

 

59.His studies of ice-polished rocks in his Alpine homeland, far outside the range of present-day glaciers, led Louis Agassiz in 1837 to propose the concept of an age in which great ice sheets had existed in now currently temperate areas.

A. in which great ice sheets had existed in now currently temperate areas

B. in which great ice sheets existed in what are now temperate areas

C. when great ice sheets existed where there were areas now temperate

D. when great ice sheets had existed in current temperate areas

E. when great ice sheets existed in areas now that are temperate

答案是B
        
但不明白为什么用一般过去式而不是过去完成时,
        
因为觉得AN AGE是在1837年前的。

沙发
发表于 2009-2-17 02:02:00 | 只看该作者
59同问
板凳
发表于 2009-2-17 06:00:00 | 只看该作者
用一般过去时代替过去完成时:
1. 两个动作按顺序发生,又不强调先后。45 中有明确时间暗示earlier in the year,并且强调先后顺序,所以应该用过去完成时
2. 叙述历史事实,可用一般过去时代替过去完成时。59
propose the concept 叙述了一个事实,并无强调意味,也无时间暗示,所以可用一般过去时。

综上所述,使用完成时态时一定是有意强调,或者有明确时间暗示。如果无强调,用一般过去时即可。
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