单项选择题


A．If
B．Although
C．Because
D．Since
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单项选择题
A．HoweverB．ThereforeC．FurthermoreD．Nevertheless
A．However
B．Therefore
C．Furthermore
D．Nevertheless
单项选择题
A．collectedB．distributedC．assignedD．finished
A．collected
B．distributed
C．assigned
D．finished
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