单项选择题

All theories （） from practice and m turn serve practice.

A. originate
B. restrain
C. modify
D. reflect

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单项选择题
The statistical figures in that report are not （）. You should not refer to them.

A. accurate
B. fixed
C. delicate
D. rigid
单项选择题
You can’t let your eyes glide across the lines of a book and ______ an understanding of what you have read.
A. come up to
B. come across
C. come around
D. come up with
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