-----Hello, Jessica! What happened?----- I could not hear you clearly because my

题干

-----Hello, Jessica! What happened?
----- I could not hear you clearly because my mobile phone could not receive a good ________.

A．sign

B．signal

C．symbol

D．mark

上一题下一题 0.64难度单项选择更新时间:2013-05-08 09:45:29

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