题目内容
______ ,or you will miss the train.
- A.Hurry up
- B.Hurried up
- C.to hurry up
- D.Hurrying up
Cellphones: is there a cancer link?
Could your cellphone give you cancer? Whether it could or not, some people are worrying about the possibility that phones, power lines and wi-fi could be responsible for a range of illnesses, from rashes to brain tumors.
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 percent chance that power lines can cause childhood leukemia(白血病). Also there’s a greater than 90 percent chance that cellphones can cause brain tumors. “It’s apparent now that there’s a real risk,” said Carpenter.
But others believe these concerns are unjustified. Dr Martha Linet, the head of radiation epidemiology(流行病学) at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cellphones,” said Linet. “We don’t have the evidence that there’s much danger.”
Studies so far suggest a weak connection between EMFs(电磁场) and illness — so weak that it might not exist at all. A multinational investigation of cellphones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cellphone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cellphone use and cancer risk.
【小题1】From the passage we can learn that some people are worried because .
| A．they have evidence the use of cellphone can lead to cancer. |
| B．they make a fuss over cellphone use. |
| C．some expert has given a warning. |
| D．cellphones are responsible for brain tumors. |
| A．the worrying is unnecessary. |
| B．cancer-warning labels should be on cellphones. |
| C．there is a link between cellphones and cancer. |
| D．cellphones have nothing to do with cancer. |
| A．started. | B．kept on. | C．gone on. | D．in progress. |
| A．Optimistic. | B．Objective. | C．Disapproving. | D．Casual. |
The world’s biggest Internet search engine, Google, has proven once again to be king of the Web. Users can download “Google Wi-Fi” software and then enjoy free Wi-Fi service available in some US cities since last Tuesday.
Wi-Fi is short for “Wireless Fidelity”(无线上网). It allows laptop computers and personal digital assistants to connect to the Internet at high speed by radio sigal.
A person with a Wi-Fi enabled computer can connect to the Internet when near one of the network’s access points. The place covered by one or several access points is called a hotspot. Google had already set up two “hotspots” in the US city of San Francisco which pr
ovide a free Wi-Fe service.
The Wi- Fi technology even allows users to enjoy a free Internet phone service. Some scientists argue that Wi-Fi may replace mobile phone networks.
Wi-Fi is stioo limited to a few cities, where there are “ hotspots”. But its capability(容量) of sending information has already done better than that of the mobile phone network, even that of 3G (Third Generation telecommunication technology). Some scientists have started to call Wi-Fi 4G.
In addition to a high speed Internet connection, Fi-Fi has other advantages compared to mobile phones. We-Fi is global. The same Wi-Fi system works in different countries around the world. Different from using cell phones, you don’t need to change computers to use Internet phones when you go to other places and most importantly, many Internet phones cost you nothing at all.
【小题1】 Wi-Fi is not available in cities without_____.
| A．a computer | B．a radio | C．a hotspot | D．a cell phone |
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.
【小题3】 Some scientists started to call Wi-Fi 4G, because_____.
| 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. |
A.Third Generation Telecommunication Technology
B. Free Call Service
C.Goo
gle Launches Free Wi-Fi ServiceD.Free Wi-Fi Service across the U.S.A.
五.任务型阅读（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（低频电磁场）.
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.
Although the World Health Organization has officially declared that EMFs seem to pose little threat, governments are still concerned. In fact, last April, the European Parliament called for countries to take steps to reduce exposure to EMFs. The city of San Francisco and the state of Maine are currently considering requiring cancer-warning labels on cellphones.
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.
But others believe these concerns are unreasonable paranoia (猜疑). Dr Martha Linet, the head of radiation epidemiology at the US National Cancer Institute, has looked at the same research as Carpenter but has reached a different conclusion. “I don’t support warning labels for cellphones,” said Linet. “We don't have the evidence that there’s much danger.”
Studies so far suggest a weak connection between EMFs and illness — so weak that it might not exist at all. A multinational investigation of cellphones and brain cancer, in 13 countries outside the US, has been underway for several years. It’s funded in part by the European Union, in part by a cellphone industry group.
According to Robert Park, a professor of physics at the University of Maryland in the US, the magnetic waves aren’t nearly powerful enough to break apart DNA, which is how known threats, such as UV rays and X-rays, cause cancer.
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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Title: Could cellphones give you cancer? |
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Key points |
Supporting details |
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Cellphones are (71)______ to use |
● Some people think it (72)______ for cellphones to cause cancer. ● Camilla Rees got ill after his neighbor installed a wi-fi router. ● Millions of people have the (73) _______ problems as Camilla. ● Some evidence supports people’s anxieties. |
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Cellphones are safe to use |
● Some believe that these concerns are just paranoia. ● So far, studies show that there isn’t much (74)______ between EMFs and illness. ● Robert Park thinks that the magnetic waves aren’t （75)_______ enough to destroy DNA. ● It’s just for (76)_______ reasons that people feel ill when they use cellphones. |
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Attitudes and (77)______ |
● Some governments are (78)_______ about the safety of cellphones or EMFs. ● The author thinks that we should（79)_______ the chance of talking on the phone or spend more time in the（80)_____ areas without cellphones. |
