Scarcely does anyone want to become janitors, but to be appointed as a sanitary engineer is quite something else.

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问题 Scarcely does anyone want to become janitors, but to be appointed as a sanitary engineer is quite something else.

选项 A、senior
B、military
C、clean
D、skilled

答案C

解析 sanitary(有关)卫生的,清洁的。四个选项:clean清洁的;senior年长的,资格老的;military军事的,军用的;skilled熟练的。
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