2. 职称英语
  3. Good pencil erasers are soft enough not ______ paper but hard enough so that the

Good pencil erasers are soft enough not ______ paper but hard enough so that the

游客2025-02-02  48
问题 Good pencil erasers are soft enough not ______ paper but hard enough so that they crumble gradually when used.
选项 A、by damaging
B、so that they damage
C、to damage
D、damaging
答案 C
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。
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