2. 外语
  3. A. imaginatively B. recently C. carefully D. unscientifically E. accidentally F. satisfactorily Schaefer successfully made a fi

A. imaginatively B. recently C. carefully D. unscientifically E. accidentally F. satisfactorily Schaefer successfully made a fi

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问题 A. imaginatively
B. recently
C. carefully
D. unscientifically
E. accidentally
F. satisfactorily
Schaefer successfully made a field experiment on rainmaking after planning
选项
答案C
解析 由文章第七段“After planning carefully，Schaefer made an experiment by dropping dry ice fromhis plane to the clouds below him．As was expected，snow formed and fell from the bottom of the cloud．Schaefer succeeded．”可知，Schaefer经过仔细的计划，成功地进行了一次实验，故选C。
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