题目内容
Paul isn’t as ______ as Sandy. He often makes mistakes in his homework.
A. careless B. more careful C. more careless D. careful
D
【解析】本题考查连词的用法。as...as意为“和……一样”，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。A、B、C三项与题意不符，应排除，正确答案是：D
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