单项选择题

The author's view in this passage is that ______.

A．cell phones and cancer are not linked
B．people shouldn't use cell-phones in a long-term
C．using cell-phones is one cause for cancer
D．cell-phones are not harmful

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单项选择题

antenna in the third paragraph probably means ______.

A．feeler
B．aerial
C．circuit
D．metal

单项选择题

The result of another study involved phone-use questionnaires shows that ______.

A．brain cancer patients don't incline to use cell-phones
B．cancer-free participants like to use cell-phones
C．significance of cell-phones
D．cancer-free participants seldom use cell-phones