标题: prep 35 请高手指点下 [打印本页] 作者: whitebone008 时间: 2010-8-29 11:34 标题: prep 35 请高手指点下 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
D 选项 有何问题？？？作者: 以后再说 时间: 2010-8-29 12:26
选B？
which be, that be, who be 出现，基本就是啰嗦作者: cooldavy 时间: 2010-8-29 15:30
我看选C吧，同位语比which从句简洁