单项选择题

______ he will leave for Beijing.

A．It will not be long before
B．It is before long that
C．It is before long
D．It was before long that
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______ man must fear when traveling in space is radiation from the sun.
A．Which
B．How
C．What
D．That
单项选择题
This is such a wonderful film ______ we have never seen.
A．that
B．as
C．which
D．what
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