2. 专升本
  3. Some hard plastics can be______metals in manufacturing machine parts.

Some hard plastics can be______metals in manufacturing machine parts.

admin2015-08-21  60
问题 Some hard plastics can be______metals in manufacturing machine parts.
选项 A、substituted for
B、taken the place of
C、replaced in
D、given way to
答案A
解析
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