单项选择题

This kind of material can ______ heat and moisture.

A．delete
B．compel
C．constrain
D．repel
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单项选择题
When I took his temperature, it was two degrees above ______.
A．normal
B．ordinary
C．average
D．regular
单项选择题
There is nothing serious ______ I am concerned. I had jumped out of the window when the bomb exploded.
A．as well as
B．as
C．as long as
D．as far as
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