The ship’s generator broke down, and the pumps had to be operated____instead of mechanically.

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问题 The ship’s generator broke down, and the pumps had to be operated____instead of mechanically.

选项 A、manually
B、artificially
C、automatically
D、synthetically

答案A

解析本题为对立同现，与mechanically相对的应该是manually，即手工。其他选项automatically(自动地)，artificially(人工地、假地)，synthetically(综合地)都与mechanically不构成同现关系。

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中学英语

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