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Since the introduction of the new technique, the production cost ______ greatly.
Since the introduction of the new technique, the production cost ______ greatly.
游客
2023-10-05
18
管理
问题
Since the introduction of the new technique, the production cost ______ greatly.
选项
A、reduces
B、is reduced
C、is reducing
D、has been reduced
答案
D
解析
本题测试的是动词时态和语态的用法。由since引导从句或后跟名词,其主句要用现在完成时态。此外,cost是reduce的宾语。因此应用reduce的现在完成时而且要用被动语态。
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