5．听第五段独白，回答第13-15小题．
13．What does Mary Lee think of the bad thing of the cell-phones？
A．They make communication easier．
B．Many people cannot use them．
C．Sometimes the cell-phones bother （打扰） her．
14．Why do lazy people probably hate the alarm clock？
A．They want to be alone．
B．They hate getting up early in the morning．
C．They can't live without them．
15．What does the passage talk about？
A．Inventions．
B．Televisions．
C．Cell-phones．
