Several witnesses gave accounts of what they had seen. It took many hours to _______ the court of the driver's guilt.?

A. prove  B. convince    C. persuade    D. demonstrate

B


解析:

　考查動(dòng)詞的辨析。固定詞組convince sb.of sth.意為“使某人確信、相信……的正確性”。

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【小題4】Which of the following best describes the attitude of the author towards the debate?
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五.任務(wù)型閱讀（10分）

Could your cellphone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, powerlines and wi-fi (路由器) could be responsible for a range of illnesses, from rashes to brain tumours.

For example, Camilla Rees, 48, a former investment banker in the US, moved out of her apartment in San Francisco because of the radiation coming from next door. Rees told the Los Angeles Times that when her neighbors moved in and installed a wi-fi router she lost her ability to think clearly. “I would wake up dizzy in the morning. I’d fall to the floor. I had to leave to escape that nightmare,” she said. Since then, she’s been on a campaign against low-level electromagnetic fields, or EMFs（低頻電磁場(chǎng)）.

And she’s not alone. Millions of people say they suffer from headaches, depression, nausea and rashes when they’re too close to cellphones or other sources of EMFs.

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If these fears are reasonable, then perhaps we should all be worried about the amount of time we spend talking on our phones or plugging into wi-fi hotpots.

Some say there is evidence to support the growing anxieties. David Carpenter, a professor of environmental health sciences at the University at Albany, in New York, thinks there’s a greater than 95% chance that power lines can cause childhood leukemia. Also there’s a greater than 90% chance that cellphones can cause brain tumours.

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Perhaps it’s just psychological. Some experts find that the electro-sensitivity syndrome seems to be similar to chemical sensitivity syndrome, which is a condition that’s considered to be psychological.

Whether EMFs are harmful or not, a break in the countryside, without the cellphone, would probably be good for all of us.

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Key points

Supporting details

Cellphones are (71)______ to use

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● Some evidence supports people’s anxieties.

Cellphones are safe

to use

● Some believe that these concerns are just paranoia.

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● It’s just for (76)_______ reasons that people feel ill when they use cellphones.

Attitudes and (77)______

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1. Wi-Fi is not available in cities without_____.

 A. a computer   B. a radio   C. a hotspot   D. a cell phone

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A.  The high speed Internet connection.   B. Many free Internet phones.

B.  Using the same computers for Internet phones when you go to other places. C. Used in all the US cities.

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A.it is the product of the Google”s 4th generation.

B..it is more capable of sending information than the mobile phone network.

C.it has been used by more than four generations.

D.Wi-Fi will surely take the place of the mobile phone network.

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