几道难题请教大侠！

下面是我在复习当中遇到的个人认为有难度的题目。我对答案很不清楚。请个位帮忙。 1. Beatrix Potter, in her book illustractions, carefully coordinating them with her narritives, capitalized on her keen observation and love of the natural land. (A) Beatrix Potter, in her book illustractions, carefully coordinating them with her narritives (B) In her book illustractions, carefully coordinating them with her narratives, Beatrix Potter (C)In her book illustractions, which she carefully coordinated with her narratives, BP (D) Carefully coordinated with her narratives, BP, in her book illustractions (E) BP, in her book illustractions, carefully coordinated them with her narratives and 答案给的是C。但是我觉得这几个选项都很别扭。C的前面就很awkward。 2. Although the coordination of monetary policy can help facilitate the orderly financing of existing imbalances, it is unlikely that its effects on their sizes is significant in the absence of an appropriate fiscal adjustment. (A) it is unlikely that its effects on their sizes is significant (B) it is unlikely that the size of their effect would be significant (C) affecting their seizes are not likely to be significant (D)the significance of their effect on its sizes is unlikely (E) its effect on their size is not likely to be significant 答案是E 我不明白为什么A不对。 3. Although dozens of New York's small museums are either devoted to local history or various ethic groups, there are many one of a kind museums from Manhattan to the Bronx that are open for exploration on summer weekends. (A) (B) Although dozens of New York's small museums are devoted to local history or various ethic groups (C) Dozens of New York's small museums are devoted to local history or various ethic groups, but there are (D) Dozens of New YOrk's small nuseums are devoted to local history or various ethci group, there are also (E)Devoted to local history or various ethic groups, dozens of New York's small museums and also 答案是D 我也不是很吃的准为什么选这个。感觉上是从两个clause之间是否有转折关系来判断的。但是好像这样我也不能说服自己。 4. Research during the past several decades on the nature of language and the processes that produce and make it understandable has revealed great complexity instead of underlying simplicity. (A) (B) of producing and understanding it have revealed not underlying simplicity but great complicity (C) by which it is produced and understood has revealed not underlying simplicity but great complicity (D) and (E) 都是非常明显的错误答案是A 但是我觉得B好像是对的。因为B中有一个not but的优选结构

5. Bob Wilber became Sidney Bechet’s student and protege when he was nineteen and, for a few years in the 1940’s, came as close to being a carbon copy of the jazz virtuoso in performance as anyone has ever come.fficeffice" />