单项选择题


A．what
B．which
C．who
D．as
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单项选择题
A．InsteadB．On the other handC．By contrastD．In contrast
A．Instead
B．On the other hand
C．By contrast
D．In contrast
单项选择题
A．circledB．circlingC．encircledD．encircling
A．circled
B．circling
C．encircled
D．encircling
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