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    【题目】The dog may be a good companion for the old. ___________, the need to take it for walks may be a disadvantage.

    A. Besides

    B. However

    C. Therefore

    D. Instead

    【答案】B

    【解析】句意：狗或许是老年人的好伙伴，但是，需要出去遛狗可能会造成不便。考查副词辨析。根据句意可知两句之间为转折关系，所以用however(然而)。besides此外；therefore因此；instead相反地。

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