[求助]NN帮忙看一下啊 GWD1-6 两语法题

ahwhbear622

21:

A new hair-growing drug is being sold for three times the price, per milligram, as the drug’s maker charges for another product with the same active ingredient.

1. as
2. than
3. that
4. of what
5. at which

38:

The market for recycled commodities like aluminum and other metals remain strong despite economic changes in the recycling industry.

1. commodities like aluminum and other metals remain
2. commodities like those of aluminum and other metals are remaining
3. commodities such as aluminum and other metals remains
4. commodities, such as aluminum and other metals, remain
5. commodities, like the commodities of aluminum and other metals, remains

这题我觉得答案D错了 选C吧？

[此贴子已经被作者于2007-11-21 0:14:27编辑过]

yuching730

第一道C选将, per milligram,遮住不看,再对造句意the drug’s maker charges后少了受词,而这受词为前面的the price所以使用that带正确..

D/E两个选项都不能代回去..至于A/B明显必删

第二道同意因为The market……………..remains主谓一致..

fg_bamboo

21 这个题选D有啥不对呢?

ahwhbear622

谢谢ＭＭ哦

yuching730

D\E的of what \at which皆代不回去要使用指代

也必须使用for which 因为charge for