标题: 旧prep语法笔记第35题~ [打印本页] 作者: 左摇右摆 时间: 2010-8-31 10:46 标题: 旧prep语法笔记第35题~ In laboratory rats, a low dose of aspirin usually suffices to block production of thromboxane, which is a substance that promotes blood clotting, but not seriously interfering with the production of prostacyclin, which prevents clotting. (A) which is a substance that promotes blood clotting, but not seriously interfering (B) a substance that promotes blood clotting, but not seriously interfering (C) a substance that promotes blood clotting, but does not seriously interfere (D) which is a substance to promote blood clotting, but does not seriously interfere (E) which is a substance that promotes blood clotting, but not a serious interference 请问C项和D项：C项中but does not seriously interfere可以跳过同位语substance 与主句谓语动词suffices平行，句 子结构为a low dose of aspirin suffices ...,but does not interfere... 那D项中的 but not a serious interference 不能跳过which引导的定语从句与主句谓语动词suffices平行吗？ 答案选择的是C作者: judydongxueni 时间: 2010-8-31 13:13
前面有逗号啊，就不用加which啦作者: 左摇右摆 时间: 2010-8-31 14:52
能再解释的清楚一些吗？是不是说D项没有C项简洁？作者: bennywang2usa 时间: 2010-8-31 15:45
不是的，童鞋。