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1.The human growth hormone , made by the pituitary gland,is secreted during sleep in higher concentrations than when awake. A.during sleep in higher concentrations than when awake B.when sleeping in higher concentrations than waking hours C.in higher concentrations during sleeping than waking D.in higher concentrations during sleep than during waking hours E.in higher concentrations when asleep than when awake 答案选择D~~~我觉得E似乎比D对称的更好``请高手指点~~ 2.The US petroleum industry's cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of yhe dacade. A.The US petroleum industry's cost to meet environmental regulations is projected at ten percent of the price per barrel of refined petroleum by the end of the dacade B.The US petroleum industry's cost by the end of the dacade to meet environmental regulations is estimated at ten percent of the price per barrel of refined petroleum C.By the end of yhe dacade,the US petroleum industry's cost of meeting environmental regulations is projected at ten percent of the price per barrel of refined petroleum D.To meet environmental regulations ,the cost to the US petroleum industry is estimated at ten percent of the price per barrel of refined petroleum by the end of the dacade E.It is estimated that by the end of the decade the cost to the US petroleum industry of meeting environmental regulations will be ten percent of the price per barrel of refined petroleum. 答案选择E~~~我想不通其他几个选项为什么错了~~~郁闷 还有~~ESTIMATE到底可不可以和AT搭配~~貌似白勇的书上说可以~~但是新东方老师说没有这种搭配方式~~~请指点~~ 3.Migraine ,the most debilitating common form of headache .afflicts perhaps 18 million Americans ,who collectively lose 64 million workdays a year,and they cost the nation $50 billion in medical expense and lost work time. A.year,and they cost the nation $50 billion in medical expense and lost B.year and thus cost the nation $50 billion in medical expense and lost C.year,so as to cost the nation $50 billion in medical expense and lost D.year that costs the nation $50 billion in lost medical expense and E.year , which thus cost the nation $50 billion in lost medical expense and 答案选择A```请问A中的THEY指代的是AMERICANS吗``如果是的话~~为什么B答案不可以呢？？ 4.In the 1980's the rate of increase of the minority population of the US was nearly twice as fast as the 1970's. A twice as fast as B.twice as fast as it was in C.twice what it was in 答案选C``如果从正确与否的角度考虑~~B是否也正确呢？ 5.Most of Portugal's 250000 university students boycotted classes in a one-day strike to protest a law that requires them to contribute $330 a year toward the cost of higher education ,previously paying $7 per year. A.year toward the cost of higher education ,previously paying $7 per year. B.year toward the cost of higher education ,for which was previously paid $7 per year C.year, compared to the previously $7 per year,toward the cost of higher education D.year toward the cost of higher education ,instead of the $7 per year required previously E.year as opposed to the $7 per year required previously for the cost of higher education 答案选择D 请问B和C分别错在哪里呢？？？ 
[此贴子已经被作者于2007-1-29 19:12:31编辑过] | 
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发表于 2007-1-28 14:09:00
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答案应该是C```为什么捏？？？
