2. 外语
  3. After ______ (treat) specially, this kind of metal can be used in bridge construction.

After ______ (treat) specially, this kind of metal can be used in bridge construction.

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问题 After ______ (treat) specially, this kind of metal can be used in bridge construction.
选项
答案treated
解析
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大学英语三级B级

大学英语三级

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