单项选择题

______ with air, a life jacket will keep a person afloat.

A．It is filled
B．Fining
C．When fined
D．When filling it
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单项选择题
Some treasures are not immediately recognizable ______.
A．as such
B．such as
C．as that
D．so that
单项选择题
Each one of them prayed that he might lead her home to be his wedded wife, so greatly were they ______ at the beauty of violet-crowned Cytherea.
A．astonished
B．amazed
C．astounded
D．shocked
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