问题
选择题
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
答案：B
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。