单选题
公共英语一级
2017-02-14
He drives much __ than he did ten years ago.
A．carefully
B．more careful
C．more carefully
参考答案
C
答案解析
本题考查副词比较级。这里需要一个副词来修饰动词drive，careful是形容词，carefully是副词，所以先排除B；than要求用比较级，所以排除A，选C。carefully的比较级是在前面加more。