单项选择题


A．shapes
B．patterns
C．conventions
D．forms
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单项选择题
A．someB．severalC．variousD．varied
A．some
B．several
C．various
D．varied
单项选择题
A．so asB．so thatC．as suchD．as well as
A．so as
B．so that
C．as such
D．as well as
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