单项选择题

A．as
B．when
C．while
D．if
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单项选择题
A．ThoseB．WhoC．ThatD．Whom
A．Those
B．Who
C．That
D．Whom
单项选择题
A．contrary toB．in line withC．due toD．by means of
A．contrary to
B．in line with
C．due to
D．by means of
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