-----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
网友回答
A. sign
(答案→)B. signal
C. symbol
D. mark
解析：考查名词：A. sign标志B. signal信号C. symbol象征D. mark记号，句意：――你好，Jessica！怎么了？――我不能听清你的声音，因为我的手机不能接受好的信号。选Ｂ。