单项选择题


A．harmful
B．profitable
C．healthy
D．useful
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单项选择题
A．hurriedlyB．repeatedlyC．worriedlyD．surprisedly
A．hurriedly
B．repeatedly
C．worriedly
D．surprisedly
单项选择题
A．OnceB．BecauseC．WhenD．Although
A．Once
B．Because
C．When
D．Although
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