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标题: prep 122 求助 [打印本页]

作者: mia113 时间: 2011-7-12 14:45
标题: prep 122 求助

Surveys have shown that in up to 40 percent of elderly people living independently in affluent

countries, the consumption of one or more essential nutrients is insufficient or they have deficient

levels of these nutrients in their blood.

(A) in up to 40 percent of elderly people living independently in affluent countries, the consumption

of one or more essential nutrients is insufficient or they have

(B) in up to 40 percent of elderly people who live independently in affluent countries, they consume

one or more essential nutrients insufficiently or have

essential nutrients are consumed insufficiently or having

(D) up to 40 percent of elderly people living independently in affluent countries who consume

insufficient amounts of one or more essential nutrients or who have

(E) up to 40 percent of elderly people who live independently in affluent countries consume

insufficient amounts of one or more essential nutrients or have

答案是E没有问题，想请问下B中句首in的用法。破解上没有解释。求解·！

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