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题目内容
(国家开放大学理工英语4)
The Cheetah robot made by MIT.s scientists can jump over hurdles while __________.
单选题 (10 分) 10分
A.
it running
B.
running
C.
be ran
单选题 (10 分) 10分
A.
it running
B.
running
C.
be ran
参考答案