seem to have done, be known to have done

mathfin9

我在做题目过程中，觉得seem to have done, be known to have done很少作为正确答案

不知道各位前辈有没有同样看法

请参考885 B14和19

14:The Western world’s love affair with chocolate is well-documented: few people have been known to have tasted it for the first time without requesting more.

(A) few people have been known to have tasted it

(B) few having been known to taste it

(C) it has been tasted by few people

(D) few people have been known to taste it（D）

(E) few people having tasted it

A为什么不对，答案是D

9.     Balzac drank more than fifty cups of coffee a day and died of caffeine poisoning; furthermore, caffeine did not seem to bother Samuel Johnson, the great writer and lexicographer, who was reported to have drunk twenty-five cups of tea at one sitting.

(A) furthermore, caffeine did not seem to bother

(B) however, caffeine did not seem to bother

(C) however, caffeine did not seem to have bothered

(D) furthermore, caffeine did not seem to have bothered（B）

(E) in addition, caffeine did not seem to bother

答案是B，C为什么不对

rt316

参考一下吧

http://forum.chasedream.com/dispbbs.asp?BoardID=23&ID=59555

mathfin9

非常感谢答复，解决了一个大问题