单项选择题

All products have to pass strict inspection ( )they go out.

A．after
B．since
C．as
D．before
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单项选择题
A11 produets have to go ( )five checks in the whole process.
A．to
B．through
C．with
D．/
单项选择题
( )is a major port of Denmark.
A．Oran
B．Odense
C．Toulon
D．Kiel
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