Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also caused erosion and very quickly deforested whole regions. A. Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also B. Not only did the systematic clearing of forests in the United States create farmland (especially in the Northeast), which gave consumers relatively inexpensive houses and furniture, but also C. The systematic clearing of forests in the United States, creating farmland (especially in the Northeast) and giving consumers relatively inexpensive houses and furniture, but also D. The systematic clearing of forests in the United States created farmland (especially in the Northeast) and gave consumers relatively inexpensive houses and furniture, but it also E. The systematic clearing of forests in the United States not only created farmland (especially in the Northeast), giving consumers relatively inexpensive houses and furniture, but it 正确答案选Ｄ，可Ｄ改了强调句，而且也去了ＮＯＴ ＯＮＬＹ，而Ｂ错在ＷＨＩＣＨ的跳跃修饰，我选了Ｂ．．作者: wang0774 时间: 2010-7-1 22:18
我的理解是： A. 不平行。not only did the system...but it also B. which指代错误 C. 改变原文意思了。主句变成了the systematic clearing caused erosion. 而且中间那个but also没有对应的not only. D. 虽然改变原文not only, but also的句型，但毕竟没有改变逻辑意思。还是说systematic clearing带来的利弊作对比。 而且这里的but表示转折了。 E. not only...没有but also 做对应。