2. 外语
  3. Some of the (earliest mechanical) devices (were designed) to (raise) water from streams for the (irrigate) of crops.

Some of the (earliest mechanical) devices (were designed) to (raise) water from streams for the (irrigate) of crops.

admin2005-01-30  95
问题 Some of the (earliest mechanical) devices (were designed) to (raise) water from streams for the (irrigate) of crops.
选项 A、earliest mechanical
B、were designed
C、raise
D、irrigate
答案D
解析
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