While they remove carbon dioxide from the air, conserve soil and water, and house thousands of species, forests also supply potentially valuable pharmaceuticals, and, as sources of building material and firewood, that provide employment for millions worldwide.
(A) pharmaceuticals, and, as sources of building material and firewood, that provide
(B) pharmaceuticals, and sources of building material and firewood, are providers of
(C) pharmaceuticals and, as sources of building material and firewood that are providing
(D) pharmaceuticals and sources of building material and firewood, for providing
(E) pharmaceuticals and, as sources of building material and firewood, provide
老版1。23。
答案是E。我选择D。
我觉得D也可以说得通啊。。。pharmaceuticals也可以给人们带来employment？
还是说forests不能supply sources of material只能as sources of material？作者: beijin111 时间: 2010-3-28 22:14
意思是森林不仅提供有价值的药材也提供就业，supply和provide平行，D用for doing表目的不够有效，况且似乎改变了句意。本题关键在于那个平行。作者: 山炮 时间: 2010-3-29 13:34
D选项，
forests supply P and S of B, for providing. 是不是 P and s of B 会有歧义。 ，for doing? 做什么结构呢。