题目列表(包括答案和解析)
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable（易受伤的）to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid（易吸收的液体）. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.
1.According to Ms Davis, brain cancer increase ____.
A．among children B．among old people
C．in the twenties D．among pregnant women
2.Why do children easily be affected by radiation?
A．Because they haven’t grown up.
B．Because they are too young to protect themselves.
C．Because they use cell phones more often than adults.
D．Because their skulls are thinner and their brains are easily hurt.
3.What can we conclude from the last paragraph?
A．Pregnant women should keep cell phones away.
B．People should use cell phones in the correct way.
C．If you are a child, you’d better text than make phone calls.
D．When you use a cell phone, use a wired headset or the phone’s speaker.
4.What does the passage mainly talk about?
A．Be careful when using cell phones.
B．Don’t hold your cell phone against your ear.
C．Rats exposed to radiation have damaged DNA in their brains.
D．Low-energy radiation could damage cells that could lead to cancer.
Holding a cell phone against your ear or storing it in your pocket may be dangerous to your health. This explains a warning that cell phone manufacturers include in the small print that is often ignored when a new phone is purchased. Apple, for example, doesn’t want iPhones to come closer to you than 1.5 centimeters; Research In Motion, BlackBerry’s manufacturer, recommends 2.5 centimeters.
If health issues arise from cell phone use, the possible effects are huge. Voice calls - Americans chat on cell phones 2.26 trillion(万亿)minutes annually - earn $109 billion for the wireless carriers.
Devra Davis, an expert who has worked for the University of Pittsburgh, has published a book about cell phone radiation, “Disconnect.” The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
“Most cancers have multiple causes,” she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable（易受伤的）to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid（易吸收的液体）. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen（腹部）.
【小题1】According to Ms Davis, brain cancer increase ____.
| A．among children | B．among old people |
| C．in the twenties | D．among pregnant women |
| A．Because they haven’t grown up. |
| B．Because they are too young to protect themselves. |
| C．Because they use cell phones more often than adults. |
| D．Because their skulls are thinner and their brains are easily hurt. |
| A．Pregnant women should keep cell phones away. |
| B．People should use cell phones in the correct way. |
| C．If you are a child, you’d better text than make phone calls. |
| D．When you use a cell phone, use a wired headset or the phone’s speaker. |
| A．Be careful when using cell phones. |
| B．Don’t hold your cell phone against your ear. |
| C．Rats exposed to radiation have damaged DNA in their brains. |
| D．Low-energy radiation could damage cells that could lead to cancer. |
Holding a cell phone against your ear or stalling it in your pocket may be hazardous to your health．
This paraphrases a warning that cell phone; manufacturers include in the small print that is often tossed aside when a new phone is purchased．Apple, for example, doesn’t want iP hones to come closer to you than 1．5 centimeters; Research In Motion, Blackberry’s manufacturer, recommends 2.5 centimeters．
If health issues arise from cell phone use, the implications are huge．Voice calls - Americans chat on cell phones 2．26 trillion minutes annually - generate $109 billion for the wireless carriers．
Devra Davis, an epidemiologist who has worked for the University of Pittsburgh, has published a book about cell phone radiation, "Disconnect." The book surveys scientific research and concludes the question is not settled.
Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population.
"Most cancers have multiple causes," she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer.
Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid. No studies have yet been completed on cell phone radiation and children, she says.
Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiofrequency radiation had damaged DNA in their brains.
Ms. Davis recommends using wired headsets or the phone’s speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen.
【小题1】We can infer from the passage that________．
| A．Cell phone may do harm to our health if we hold it against our ear or store in our pocket |
| B．Devra Davis thinks that there are many factors contributing to cancer． |
| C．The increase in brain cancer in the young adults may have something to do with cell phone |
| D．Children are more likely to be affected by radiation |
| A．They can keep cell phones away from the abdomen． |
| B．They can send short massage instead of making phone calls directly． |
| C．They can pay more attention to the small print on the phone． |
| D．They should use more advanced cell phones． |
| A．American cell phone manufacturers did not give any warning to their customers |
| B．American cell phone manufacturers benefit greatly from their products |
| C．Scientists have found the connection between brain cancer and ceil phone |
| D．Cell phone should be banned because of the increase in brain cancer |
| A．Advanced technology． | B．Entertainment． |
| C．Science and life． | D．Celebrity． |
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Possessing a car gives one a greater degree of freedom. With the building of good fast motorways, long distances can be covered rapidly and pleasantly. 1 You will no longer be forced to rely on public transport and work locally. You can choose from a greater variety of jobs and probably changes your work more frequently as you are not limited to a small area.
Although you can afford to buy it now, you have to consider the future. 2 However large the first sum you have to pay, you have to spend more in running the machine—the various taxes, the fuel, and of course the repairs. The last is especially endless. Any single repair may cost you thousands.
3 As more and more cars are produced and used, an even larger amount of poisonous gas is being sent out. Some of the contents of this gas, such as lead, can cause actual harm to the health of people. Many of the minor illness of modern industrial society, headaches, tiredness, and stomachaches may just arise from the gas.
4 It has been said that when a man is sitting behind the wheel, his car becomes the display of his personality. People who are normally quiet and pleasant may become unrecognizable when they are behind the wheel. They are ill-mannered and aggressive and selfish. All their hidden character seems to be brought to the surface by act of driving.
Traveling by car actually brings more inconvenience. Driving a car may be more comfortable than taking a crowded bus. But any advantage of driving a car is often gone in traffic jams, endless queues of cars through all the main streets. 5
A．Driving a car often brings out a man’s worst qualities.
B．Driving a car may cause many traffic accidents.
C．If you have a car, you can move around freely.
D． Considering this, I don’t support the use of more cars.
E. A car may bring you heavy financial burden.
F. More cars can produce serious air pollution.
G. Knowing you are able to drive makes you more confident.
An increase in students applying to study economics at university is being attributed to the global economic crisis awakening a public 36 for knowledge about how the financial system 37 .
Applications for degree courses beginning this autumn were up by 15% this January, 38 UCAS, the Universities and Colleges Admissions Service. A spokesman for the Royal Economic Society said applications to do economics at A-level were 39 up.
Professor John Beath, the president of the society, and a 40 lecturer at St Andrews University, said his first-year lectures—which are open to students from all departments—were 41 crowds of 400, rather than the 42 250.
“There are a large number of students who are not economics 43 who would like to learn something about it. One of the things I have done this year is to 44 my teaching to contemporary events in a way that one hasn’t 45 done.” He added.
University applications 46 7% last year. But there were rises 47 average in several subjects. Nursing saw a 15% jump, with people’s renewed 48 in careers in the public sector, which are seen as more secure in economic crisis.
A 49 study showed almost two thirds of parents believed schools should do more to teach pupils about financial 50 and almost half said their children had asked them what was 51 , although a minority of parents felt they did not understand it themselves well enough to explain.
Zack Hocking, the head of Child Trust Funds, said: “It’s possible that one good thing to arise from the 52 will be a generation that’s financially 53 and better equipped to 54 their money through times of economic 55 .”
1.A．concern B．thirst C．sense D．taste
2.A．works B．performs C．serves D．affects
3.A．in terms of B．according to C．on account of D．in spite of
4.A．yet B．once C．also D．still
5.A．outstanding B．inspiring C．convincing D．leading
6.A．catching B．appealing C．drawing D．covering
7.A．usual B．regular C. average D．common
8.A．majors B．interests C．preferences D．standards
9.A．attach B．adapt C．approach D．relate
10.A．generally B．frequently C．traditionally D．originally
11.A．raised B．rose C．fell D．struck
12.A．by B．in C．over D．above
13.A．effect B．focus C．interest D．benefit
14.A．recent B．late C．present D．unique
15.A．matters B．affairs C. events D．issues
16.A．taking up B．going on C．calling up D．keeping on
17.A．overturn B．downturn C．breakthrough D．breakout
18.A．cleverer B．smarter C．brighter D．wiser
19.A．strugglt B．measure C．manage D．earn
20.A．stability B．puzzle C．uncertainty D．recovery
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