？同位语从句和定语从句的区别

Jaminpei · 发表于 2015-9-21 14:44:05

n 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

碰到一道题，解释d选项是因为but会被认为是which从句里面的，那么想问一下为什么c中的but不会被认为在从句里面
同位语从句和定语从句到底如何区分？？？！

Isabella雪 · 发表于 2022-8-18 16:30:45

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本贴相关题目 GMATPrep-2007E1-SC-35 (MKSZ)

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