牛人帮我看几道题好不好？想不清楚了，谢谢

11.   Marketing researchers have found that, because many residents of the Southeast do not share the same ethnic heritage as Northeasterners, the two varieties of commercially prepared coleslaw most popular in New York City and Boston are virtually ignored by consumers in Richmond and Raleigh.

(A) because many residents of the Southeast do not share the same ethnic heritage as

(B) because many residents of the Southeast do not share the same ethnic heritage with

(C) because many residents of the Southeast do not have the same ethnic heritage as

(D) due to many residents of the Southeast not sharing the same ethnic heritage with（C）

(E) whereas many residents of the Southeast do not share the same ethnic heritage as

我选的是 B。这里为什么要用have not share 呢？ 我感觉有两种意思：1。东南居民和东北居民有分享共同的文化遗产，如b所说；2。 东南居民不像东北居民那样有共同文化遗产，那就是东南居民之间没有共同文化遗产，像c所说。

不知道我的疑惑有没有说清楚，大家可以帮我解释一下使那个吗？ 我有些糊涂了，觉得两个答案差不多，就是看意思了，估计？

2.     Modern critics are amused by early scholars’ categorizing Tacitus’s Germania as an ethnographic treatise.

(A) scholars’ categorizing Tacitus’s Germania as

(B) scholars’ categorizing Tacitus’s Germania as if

(C) scholars, categorizing of Tacitus’s Germania as

(D) scholars who categorize Tacitus’s Germania as（A）

        (E) scholars who categorize Tacitus’s Germania if

答案是A. 我选D，是不是因为who 之前没有用逗号所以不对？意思上好像也有些不太一样是吗？

9.     Art museums do not usually think of their collections as capital or consider the interest income that would be generated if a portion of the capital would have been invested in another form.

(A) be generated if a portion of the capital would have been

(B) have been generated if a portion of the capital would have been

(C) be generated if a portion of the capital were

(D) be generated if a portion of the capital was（C）

        (E) be generated if a portion of the capital had been

答案是c. 我选了d。 capital 是不可数名词，即使是a portion of 也应该是单数吧？难道是虚拟与其要求不管单数还是复数都要用were (与现在事实相反的时候)？

19.   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, 我选了c, 不太搞得清楚了，bother 这个动词不管发生过没有，都应该是过去的了，那么不是应该用have bothered 来表示这个时态吗？