题目内容
| Earth is believed _____ by an object the size of Mars at some point in the distant past before its surface cooled. |
A. to be hit B. to have hit C. to have been hit D. to hit |
试题答案
C
相关题目
Earth is believed ______ by an object the size of Mars at some point in the distant past
before its surface cooled．
A．to be hit B．to have hit C．to have been hit D．to hit
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Earth is believed ______ by an object the size of Mars at some point in the distant past before its surface cooled．
- A.to be hit
- B.to have hit
- C.to have been hit
- D.to hit