问题描述:
Computer must be of great use to ____do the scientific research.
Computers must be of great use to ____do the scientific research.
Computers must be of great use to ____doing scientific research.
分别填什么?为什么?
Computers must be of great use to ____do the scientific research.
Computers must be of great use to ____doing scientific research.
分别填什么?为什么?
问题解答:
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