2. 外语
  3. Any steam engine gives us an example of______into work.

Any steam engine gives us an example of______into work.

admin2010-02-22  3
问题 Any steam engine gives us an example of______into work.
选项 A、heats having turned
B、heats turning
C、heats having been turned
D、heat being turned
答案D
解析
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