Kepler reconciled astronomy with physics, and substituted for fictitious clockwork a universe of material bodies not unlike the

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问题 Kepler reconciled astronomy with physics, and substituted for fictitious clockwork a universe of material bodies not unlike the earth, freely floating and turning in space, moved by forces______.

选项 A、acted on them
B、being acted on it
C、acting on them
D、having acted on it

答案C

解析 动词一ing形式作定语,force与them的关系是主动关系,即要用动词一ing形式,且是主动结构,故正确答案为C。
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