标题: prep 语法3 [打印本页] 作者: racy0226 时间: 2012-7-19 00:21 标题: prep 语法3 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作者: lisaireland 时间: 2012-7-19 00:30
为什么不选D呢？作者: racy0226 时间: 2012-7-19 00:35
我明白了，名词不如动词好啊作者: lisaireland 时间: 2012-7-19 00:37
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~作者: racy0226 时间: 2012-7-19 00:46
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，所以不好作者: xlc1989728 时间: 2012-8-26 14:54
这道题it是完全指代，D中指代的是synthetic growth hormone，不合逻辑