18．American productivity is declining in relation to Europe's; the energy expended per unit of production in the United States is as much as twice that expended in West Germany. (A) as much as twice that expended in West Germany (B) as much as twice that of West Germany's expenditure (C) up to two times of West Germany's expenditure (D) up to two times what West Germany expended (E) up to double West German expenditure 请问，B和E为什么不对呢？这个题考哪些重要的知识点呢？谢谢大家！！！
B is worry because expenditure is noun. parallel structure should match between verb and verb. D. what in here , what mean. In addition, before to, adv "up" must be wrong. I think the key point is parallel structure.
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发表于 2003-11-1 07:43:00
