2. 外语
  3. Electrical resistance is a common property of all materials, ______.

Electrical resistance is a common property of all materials, ______.

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问题 Electrical resistance is a common property of all materials, ______.
选项 A、only differs in degree
B、only in degree it differs
C、differing only in degree
D、and differing in degree only
答案C
解析 此处用动词ing形式表伴随。
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