单项选择题

Petrol is refined from the ______ oil we take out of the ground.

A．fresh
B．original
C．rude
D．crude
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单项选择题
If you do not ______ by the regulations, you will get into trouble.
A．adhere
B．stick
C．insist
D．abide
单项选择题
This article ______ more attention to the problem of cultural interference in foreign language teaching and learning.
A．calls for
B．applies tor
C．cares for
D．allows for
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