标题: 讨论一道PP 35 SC [打印本页] 作者: 小样囡 时间: 2010-2-19 18:10 标题: 讨论一道PP 35 SC 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 答案是C 可是我认为是D which is a substance to promote blood clotting和which prevents clotting. 平行 对称 but does跳过同位语和suffices并列共同作为a low dose of aspirin的谓语动词