2. 外语
  3. The (earliest successful) sewing (machines) were powered by (turn) a (hand crank).

The (earliest successful) sewing (machines) were powered by (turn) a (hand crank).

admin2004-11-30  80
问题 The (earliest successful) sewing (machines) were powered by (turn) a (hand crank).
选项 A、earliest successful
B、machines
C、turn
D、hand crank
答案C
解析
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