Question

【题目】As a result of the use of the new technology, the production of this product________50 percent.

A．has risen to

B．has been raised to

C．has risen by

D．has been risen by

Answer 1

【答案】C

【解析】rose是不及物动词，不能用被动语态；如果是增长或提高了百分之多少，必须用介词by，用介词to时只能是具体数字。根据这两条可判断，答案为C。