35. 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
正确答案C
-------------------PREP 解释-------------------
(A) promotes…, but not…interfering…结构不平行
(B) 错误同A选项；
(C) 正确, a substance that…独立主格结构作为thromboxane的同位语对thromboxane进行解释说明; 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
(D) but does…更像是跟is a substance…并列,从而作为了thromboxane的谓语动词,改变了原句的意思
(E) but not a serious语法上只能跟is a substance并列(因为前面有which is a substance that…所以but not a serious…可以视为but is not a serious…的省略结构,但是却不能做为…usually suffices的省略结构),共同修饰thromboxane,改变了原句的意思
---------------------------------------------------------------------------------------
有几个问题请教大家：
1.这个句子里，a substance that...不是一个单纯的同位语+限制性定语从句吗，为什么说是独立主格结构？
2. does not seriously interfere为什么是跳过同位语，和suffices并列，而不是和promotes blood clotting并列？
| 
京公网安备11010202008513号 京ICP证101109号 京ICP备12012021号
发表于 2011-7-17 10:18:47
收藏
收藏
楼主
