口译笔译考试

【单选题】 Good pencil erasers are soft enough not ________paper but hard enough so that they crumble gradually when used.
A．by damaging
B．so that they damage
C．to damage
D．damaging

网考网参考答案：C
网考网解析：
语法应用。“enough+不定式”(足够……能)结构常置于形容词后作状语，表示结果；本句是这一结构的否定式；所以C是答案。 查看试题解析出处>>