Americans have been the consumers of fast food since

Americans have been the consumers of fast food sinceA. many women began to work

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[A] Nobody would take care of the city. [B] There would be n

[A] Nobody would take care of the city. [B] There would be no schools. [C] There

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请在(79)处填上最佳答案。

请在(79)处填上最佳答案。A. not B. besides C. even D. finally

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某公司要在长、宽、高分别为50米、40米、30米的长方体建筑的表面架设专用电路管道联接建筑物内最远两点,预设的最短管道长

某公司要在长、宽、高分别为50米、40米、30米的长方体建筑的表面架设专用电路管道联接建筑物内最远两点,预设的最短管道长度介于:A.70—80米之间 B.60—

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