7. GWD27-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. A. as much as that which is being emitted annually by all B. as much annually as is emitted by the C. as much compared to what is annually emitted by all D. that emitted annually by all E. that emitted annually compared to the 这里的D是下面的哪种用法呢,是twice + n.短语 的用法吗,that指代前面的the total amount of pollutant 吗。NN帮忙
- 倍数比较
- twice as many/much as
- twice the + n.(twice the average income)
- twice + what从句
- twice + n.短语
- double:vt. + n. / vi. sth. is doubled
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