搜索了,但没有查到.所以发此,请NN指点.

（1）     GWD-27-Q7

Providing initial evidence that airport are a larger source of pollution than they were once believed to be, environmentalists in Chicago report that the total amount of pollutant emitted annually by vehicles at O’Hare International Airport is twice as much as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

1. as much as that which is being emitted annually by all

2. as much annually as is emitted by the

3. as much compared to what is annually emitted by all

4. that emitted annually by all

5. that emitted annually compared to the

参考答案

为和B不正确, twice as much...as...多好的结构呀?是不是因为annually的位置不正确?

谢先!

confused, need help.

ding

同问

D选项中，that指代the amount of pollutant,还原后应该是 .....is twice the amount of pollutant emitted annually by all vehicles.....

假设上面是正确的话，我的问题在于两个：

第一：twice 的用法为twice as many/much as; twice what 从句；twice + the +名词；没有还原前，D选项中任何一种用法都不是，还原后，符合twice the +名词的用法，那么，可以这么使用twice吗？

第二个问题：关于emitted的修饰对象，是修饰that(the amount of pollutant，核心词amount)还是修饰还原后的pollutant，如果是前者，感觉逻辑不太顺：the amount is emitted by vehicle。如果是后者，那么-ed分词修饰，可以这么使用吗？

困惑，请NN解疑，谢了先！！！

annually应该修饰emit，B选项annually的位置不对，不能放在as much as 结构中间