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Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.

正确答案: C

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楼主
发表于 2012-7-19 00:21:05 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
Before scientists learned how to make a synthetic growth hormone, removing it painstakingly in small amounts from the pituitary glands of human cadavers.
(A) scientists learned how to make a synthetic growth hormone, removing it painstakingly
(B) scientists had learned about making a synthetic growth hormone, they had to remove it painstakingly
(C) scientists learned how to synthesize the growth hormone, it had to be painstakingly removed
(D) learning how to make a synthetic growth hormone, scientists had to remove it painstakingly
(E) learning how to synthesize the growth hormone, it had to be painstakingly removed by scientists
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沙发
发表于 2012-7-19 00:30:15 | 只看该作者
为什么不选D呢?
板凳
 楼主| 发表于 2012-7-19 00:35:47 | 只看该作者
我明白了,名词不如动词好啊
地板
发表于 2012-7-19 00:37:46 | 只看该作者
这道题,我一读到D,就选它了。因为它真的很清晰很简洁呀~没有太多冗杂的词汇~
5#
 楼主| 发表于 2012-7-19 00:46:05 | 只看该作者
我一开始也选的D,但我刚才又看看,发现了D中的是个名词,所以不好
6#
发表于 2012-8-26 14:54:34 | 只看该作者
这道题it是完全指代,D中指代的是synthetic growth hormone,不合逻辑
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