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    【题目】Which book is the most expensive?

    A. The blue one. B. The green one. C. The red one.

    【答案】C

    【解析】

    此题为听力题，解析略。

    M: This book with a green cover is 20 dollars and the one with a blue cover is 15 dollars more. And the red one is twice as expensive as this one.

    W: I like the one with the blue cover. But I can’t afford it right now. Sorry.

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