This year the steel output of our plant has increased by three times as compared with_____
This year the steel output of our plant has increased by three times as compared with______last year, or in other words, this years output is three times more than that of last year.
A.what of
B.those of
C.that of
D./
请帮忙给出正确答案和分析,谢谢!
参考答案
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