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It was until then that I came to know that knowledge only from practice. [ ] A.

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It was until then that I came to know that knowledge only from practice. [ ] A.

It was until then that I came to know that knowledge ________ only from practice.

[]A.

has come

B.

comes

C.

came

D.

had come

试题答案

答案:B

解析:

“知识来源于实践”是客观事实,故用一般现在时态。