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Some anthropologists believe that the genetic homogeneity evident in the world's people is the result of a "population bottleneck" -at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.

正确答案: B

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发表于 2016-6-21 10:36:09 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
97. Some anthropologists believe that the genetic homogeneity evident in the world's people is the result of a "population bottleneck"—at some time in the past our ancestors suffered an event, greatly reducing their numbers and thus our genetic variation.
(A) at some time in the past our ancestors suffered an event, greatly reducing their numbers
(B) that at some time in the past our ancestors suffered an event that greatly reduced their numbers
(C) that some time in the past our ancestors suffered an event so that their numbers were greatly reduced,
(D) some time in the past our ancestors suffered an event from which their numbers were greatly reduced
(E) some time in the past, that our ancestors suffered an event so as to reduce their numbers greatly,



我想问的是A,千行整理版关于A的错误除了没有用that外还有一条:
是event reducing number而不是ancestors
在语法笔记中有总结“,doing”用法:1表示伴随:此时doing的主语是前一句的主语 2表示结果:此时doing分句修饰前面的句子,
我觉得此时doing的用法应该是第二个啊
他们遭受了一个event导致数量减少了。。。。

求解答,谢谢额~
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沙发
发表于 2016-6-22 19:21:40 | 只看该作者
此处做结果状语,doing的逻辑主语可以不必是ancestors,这里没有错误。
A主要错在an event导致的逻辑意思错误上:
an event是泛指而不是特指。
放个屁,迷个路都可以是an event,会导致reducing their numbers and thus our genetic variation.的结果不?
板凳
发表于 2017-8-6 02:53:27 | 只看该作者
alzn2765 发表于 2016-6-22 19:21
此处做结果状语,doing的逻辑主语可以不必是ancestors,这里没有错误。
A主要错在an event导致的逻辑意思错 ...

通俗易懂!谢谢大神哈哈哈
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