问题
选择题
Paul isn’t as ______ as Sandy. He often makes mistakes in his homework.
A．careless
B．more careless
C．careful
D．more careful
答案
C
题目分析：句意：Paul不如Sandy细心。他经常在他的作业中犯错误。as…as…结构中，应该用形容词，副词的原形，由后半句可判断出选C正确。
考点: 考查形容词级别的用法。