The dog may be a good companion for the old. , the need to take it for walks may be a disadvantage.A

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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.HoweverC.ThereforeD.Instead.

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【答案】B

【解析】

考查连词。前一句话有good，后面一句话有disadvantage，前后两句话有转折关系，所以选择

however。句意：狗也许是老年人的好陪伴。然而需要带着狗去散步时也许有不便。