Cell phones：Is there a cancer link?Could your...

Cell phones：Is there a cancer link?

Could your cell phone 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 cell phones can cause brain tumors. “It’s apparent now that there’s a real risk, ”said Carpenter.

But others believe these concerns are not justified. Dr Martha Linet, 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 cell phones, ”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 cell phones 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 cell phone industry group. The final report should come out later this year, but data so far don’t suggest a strong link between cell phone use and cancer risk.

1.From the passage we can learn that some people are worried because________.

A. they have evidence that the use of cell phones can lead to cancer

B. they feel surprised and alarmed about cell phone use

C. some experts have given a warning

D. cell phones are responsible for brain tumors

2.By saying “I don’t support warning labels for cell phones, ”Dr Martha Linet has the idea that_______.

A. the worrying is unnecessary

B. cancer—warning labels should be on cell phones

C. there is a link between cell phones and cancer

D. cell phones have nothing to do with cancer

3.Which of the following best describes the attitude of the author towards the debate?

A. Optimistic.　　 B. Objective.

C. Opposite.　　 D. Casual.

4.The underlined word “justified” in Paragraph 3 is closest in meaning to_____．

A. explained　　 B. confirmed （证实、确认）

C. classified　　 D. restricted （限制）

高二英语阅读理解中等难度题查看答案及解析

You’re finishing up your history homework when your cell phone rings. You’ve got 30 minutes to reach head-quarters, get your equipment packed and receive your task. There’s a lost hiker in the mountains near the edge of town. Your task: find the missing person; provide emergency medical treatment, if necessary; and be prepared to operate 48 hours on your own with only the supplies you carry.

Sounds like some kind of film’s plot? Not if you’re a member of the Arapahoe teen rescue patrol in the suburbs of Denver. About 25 teen guys and girls are active members of this search, rescue and emergency organization, and they know firsthand that you don’t have to be an adult to save lives.

These 9th-through-12th graders are the real deal when it comes to emergency services. In fact, they’re the only teen-commanded patrol in the nation. Sure they have adult advisers to turn to if necessary, but in the field it’s a teen patrol officer calling the shots — sometimes even giving direction to adults.

Members are trained in rock-high-angle，swift-water and avalanche rescue (雪崩施行营救), winter and alpine operation , wilderness life support and emergency care, among other skills. They also regularly ride along with the local fire and police departments, providing support such as security details and evidence searching.

When asked what qualities make a good patrol member, founder and president Stan Bush named good physical conditioning and an interest in helping people. “We put in lots and lots of hours helping people in trouble,” he says. “So if a person is not really interested in doing that kind of thing, he won’t last as a member.”

1.In the first paragraph, the author describes ______.

A. a plot in some kind of film                                 B. a teen patrol member’s life

C. an emergency rescue                                                  D. a lost hiker in trouble

2.Which of the following is NOT true about the Arapahoe teen rescue patrol?

A. They are trained to have many special skills.

B. They also work with local firemen and policemen.

C. They turn to adults for help sometimes.

D. They think they can save lives only when growing up.

3.If you want to become a good rescue patrol member, you must ______.

A. be strong and interested in offering help

B. be a 9th-through-12th grader

C. finish your history homework first

D. spend many hours helping people first

4.What would be the best title for the passage?

A. What qualities make a good patrol member?

B. The Arapahoe teen rescue patrol

C. How to become a rescue patrol member

D. Skills a rescue patrol member needs

高二英语阅读理解中等难度题查看答案及解析

Your cell phone holds secrets about you. Besides the names and numbers that you’ve programmed into it, traces of your DNA remain on it, according to a new study.

DNA is genetic material that appears in every cell. Like your fingerprint, your DNA is unique to you --- unless you have an identical twin. Scientists today usually analyze DNA in blood, saliva(唾液), or hair left behind at the scene of a crime. The results often help detectives identify criminals and their victims.

Meghan J. McFadden, a biologist at McMaster University in Hamilton, Ontario, heard about a crime in which the suspect bled onto a cell phone and later dropped the device. This made her wonder whether traces of DNA remained on cell phones --- even when no blood was involved. To find out, she and a colleague collected flip-style(翻盖式) phones from 10 volunteers. They collected invisible traces of the users from two parts of the phone: the outside, where the user holds it, and the speaker, which is placed at the user’s ear.

The scientists scrubbed(meaning “cleaned”) the phones using a liquid mixture made mostly of alcohol. The aim of washing was to remove all detectable traces of DNA. The owners got their phones back for another week. Then the researchers collected the phones and repeated collecting traces on each phone once more. They discovered DNA that belonged to the phone’s owner on each of the phones.

Surprisingly, DNA showed up even in swabs that were taken immediately after the phones were cleaned. That suggests that washing won’t remove all traces of evidence from a criminal’s cell phone. So cell phones can now be added to the list of clues that can help a crime-scene investigation.

1.McFadden decided to find out whether people leave their DNA on their cell phones when she ____ .

2.The scientists allowed the volunteers to keep their cell phones for a week in order to____.

3.The last paragraph mainly tells us that cell phones ____ .

4.Which of the following is NOT mentioned in the passage?

高二英语阅读理解简单题查看答案及解析

Cell Phones Are the New Cigarettes

When you get in your car, you reach for it．When you’re at work, you take a break to have a moment alone with it．When you get into a lift, you play with it．

Cigarettes? Cup of coffee? No, it’s the third most addictive thing in modern life, the cell phone．And experts say it is becoming more difficult for many people to curbtheir longing to hug  it more tightly than most of their personal relationships．

With its shiny surface, its smooth and satisfying touch, its air of complexity, the cell phone  connects us to the world even as it disconnects us from people three feet away．In just the past  couple of years, the cell phone has challenged individuals, employers, phone makers and  counselors（顾问）in ways its inventors in the late 1940s never imagined．

The costs are becoming even more evident, and I don’t mean just the monthly bill．Dr．Chris  Knippers, a counselor at the Betty Ford Center in Southern California, reports that the overuse of  cell phones has become a social problem not much different from other harmful addictions: a barrier to one-on-one personal contact, and an escape from reality．

Sounds extreme, but we’ve all witnessed the evidence: The person at a restaurant who talks on the phone through an entire meal, ignoring his kids around the table; the woman who talks on the phone in the car, ignoring her husband; the teen who texts messages all the way home from school, avoiding contact with kids all around him．

Is it just rude, or is it a kind of unhealthiness? And pardon me, but how is this improving the quality of life?

Jim Williams, an industrial sociologist based in Massachusetts, notes that cell-phone addiction is part of a set of symptoms in a widening gulf of personal separation．He points to a study by Duke University researchers that found one-quarter of Americans say they have no one to discuss their most important personal business with．Despite the growing use of phones, e-mail and instant messaging, in other words, Williams says studies show that we don’t have as many friends as our parents. “Just as more information has led to less wisdom, more acquaintances via the Internet and cell phones have produced fewer friends,” he says．

If the cell phone has truly had these effects, it’s because it has become very widespread．Consider that in 1987, there were only 1 million cell phones in use．Today, something like 300 million Americans carry them．They far outnumber wired phones in the United States．

1.Which of the following best explains the title of the passage?

A．Cell phone users smoke less than they used to．

B．Cell phones have become as addictive as cigarettes．

C．More people use cell phones than smoke cigarettes．

D．Using cell phone is just as cool as smoking cigarettes．

2.The underlined word “curb” in Paragraph 2 means ____．

A．rescue           B．ignore            C．develop           D．control

3.The example of a woman talking on the phone in the car supports the idea that ________．

A．women use cell phones more often than men

B．talking on the phone while driving is dangerous

C．cell phones do not necessarily bring people together

D．cell phones make one-on-one personal contact easy

高二英语阅读理解中等难度题查看答案及解析

Since you have had your cell phone _____ , you don’t need to borrow mine.

A. repairing         B. to repair          C. repaired               D. repair

高二英语单项填空中等难度题查看答案及解析

Today, the technology that is being developed for cell phones is surprising. Soon our cell phones will be able to do things that we thought impossible or not even thought of at all.

When picturing the future, there are quite a few things that we would love our cell phones to be able to do. Let’s take a look at the ones that are likely to be in the next generation of cell phones. Cell phones of the near future will be able to start and unlock cars, turn lights on and off in houses, make payments(付款), work as computers. This sounds too good to be true, right? Fortunately, this future is just over the horizon; you won’t wait too long. New technology for phones is being developed to realize eye scans(扫描)and fingerprint scans as new“unlock your phone”, so you needn’t worry about your information being stolen.

What do I want my phone to be able to do? I want it to be special. For example, I will shout to my phone across the room“Give me directions to the market”and it pulls up the directions and sends them to my printer. Is it possible? Yes. Maybe someday cell phones will be able to change into robots and walk our dogs and clean our houses too. Who knows? In the last 30 years we have gone from hardly knowing what a cell phone was to surfing the Internet with excellent cell phones.

It is hard to believe that technology is advancing as quickly as it is, with no end in sight. In 5 years the technology of today will be a thing of the past, and the world won’t look back one bit.

1.We learn from the text that cell phones________in the future.

A. can do a number of jobs you want it to do

B. only do the work we once thought of

C. don’t look like today’s cell phones at all

D. can pay for whatever you want to buy

2.The underlined phrase“over the horizon”in Paragraph 2 can be replaced by“________”.

A. arriving as time goes　　 B. what people all hope

C. what we work hard for　　 D. coming in a short time

3.If one’s eye scan is done by his cell phone, ________.

A. his picture is kept in it forever　　 B. his information won’t be lost

C. his cell phone only serves him　　 D. his cell phone won’t be stolen

4.What is special about your future cell phone?

A. It works as a robot does.　　 B. You can speak loudly to it.

C. It can give you information.　　 D. It can warn you out of danger.

高二英语阅读理解中等难度题查看答案及解析

In the United States alone, over 100 million cell-phones are thrown away each year. Cell-phones are part of a growing mountain of electronic waste like computers and personal digital assistants. The electronic waste stream is increasing three times faster than traditional garbage as a whole.

Electronic devices contain valuable metals such as gold and silver. A Swiss study reported that while the weight of electronic goods represented by precious metals was relatively small in comparison to total waste, the concentration (含量) of gold and other precious metals was higher in　 So-called e-waste than in naturally occurring minerals.

Electronic wastes also contain many poisonous metals. Even when the machines are recycled and the harmful metals removed, the recycling process often is carried out in poor countries, in practically uncontrolled ways which allow many poisonous substances to escape into the environment.

Creating products out of raw materials creates much more waste material, up to 100 times more, than the material contained in the finished products. Consider again the cell-phone, and imagine the mines that produced those metals, the factories needed to make the box and packaging(包装) it came in. Many wastes produced in the producing process are harmful as well.

The U.S. Environmental Protection Agency notes that most waste is dangerous in that “the production, distribution, and use of products — as well as management of the resulting waste — all result in greenhouse gas release.” Individuals can reduce their contribution by creating less waste at the start — for instance, buying reusable products and recycling.

In many countries the concept of extended producer responsibility is being considered or has been put in place as an incentive (动机) for reducing waste. If producers are required to take back packaging they use to sell their products, would they reduce the packaging in the first place?

Governments’ incentive to require producers to take responsibility for the packaging they produce is usually based on money. Why, they ask, should cities or towns be responsible for paying to deal with the bubble wrap (气泡垫) that encased your television?

From the governments’ point of view, a primary goal of laws requiring extended producer responsibility is to transfer both the costs and the physical responsibility of waste management from the government and tax-payers back to the producers.

1.By mentioning the Swiss study, the author intends to tell us that __________.

A. the weight of e-goods is rather small

B. natural minerals contain more precious metals

C. E-waste deserves to be made good use of

D. the percentage of precious metals is heavy in e-waste

2.The responsibility of e-waste treatment should be extended __________.

A. from producers to governments　　 B. from distributors to governments

C. from individuals to distributors　　 D. from governments to producers

3.What does the passage mainly talk about?

A. The increase in e-waste.　　 B. The management of e-waste.

C. The seriousness of e-waste.　　 D. The creation of e-waste.

高二英语阅读理解困难题查看答案及解析

Getting out of the crowded bus, ______

A. her cell phone was found missing             B. her cell phone was nowhere to be found

C.she found her cell phone missing              D. Her cell phone couldn’t be found

高二英语单项填空简单题查看答案及解析

A South African farmer is receiving phone calls from his sheep after equipping them with cell phones to keep tabs on the flock amid recent livestock thefts, according to local press Wednesday.

When the sheep call, it is always bad news for farmer Erard Louw of the Cape Town suburbs, as the phones around their necks are only set to switch on when the sheep start running, a sign that thieves have cut through the fences.

"As they run it gives me a phone call and says 'Sheep One' or 'Sheep Two' and so on, so at least I know where to start looking because the farm is 750 hectares (1,850 acres)," Louw told the Cape Times daily.

Louw attached the phone-like security device to the collars of four sheep in separate flocks after thieves sneaked in and stole 27 sheep and 13 lambs a couple of weeks ago, driving Louw to rack his brains for ways to protect his animals.

He said there was no use calling nearby police, as they were stationed too far away and in his experience they either lacked an available car or the vehicle was out of fuel or missing tyres -- also the work of thieves.

According to Louw, the cell phones have already proved their worth, with one sheep-snatcher caught thanks to the device.

Still, with theft attempts currently at their peak, given long winter nights and early nightfall, a few sheep-robbers managed to get away in spite of the device.

"The phone did start ringing that night and I went out," he said, but added that he was too late.

1.Why did Erard Louw attach the phone-like device to the sheep he raises?

A. Because he thought it was fun to do.

B. Because the police there didn’t care about animals.

C. Because he liked hi-tech very much.

D. Because he wanted to protect them against thieves.

2.What does the underlined expression in Paragraph 4 probably mean?

A. Try very hard to remember or think of something.

B. Have a headache.

C. Make the brain bigger.

D. Shake the brain from side to side.

3.You can most probably read this passage______.

A. in a book

B. in a dictionary

C. in a newspaper

D. in a novel

高二英语阅读理解中等难度题查看答案及解析

Why I Got Rid of My Cell Phone

In 2017 I decided to take a break from my cell phone. Instead of shutting it off completely, I decided to turn it off for a month to see how it goes. By the end of the month I found that I could live without a cell phone. It has been seven months since I have lived without a cell phone. I would like to share with you the reasons why I decided to get rid of my cell phone.

1. Checking my phone was the first thing I did when I woke up and the last thing I did before going to sleep. Throughout the day I would check my phone countless of times. It became a bad habit of mine in which the only way to break it was to be far away from it.

When I owned a phone, I was constantly connected to it. I wasn’t taking enough time to see what was right in front of me. There was no end of the day when it came to work and there was not nearly enough time to relax. Instead, I was constantly going.2.

3. If I was having a conversation with someone, I would think about what else I could be doing or texting other people instead of being fully present in the conversation. Now that I don’t have a cell phone, I am more present in my conversations and to my surroundings.

I was completely dependent on my cell phone.4. A cell phone was my quick and easy problem solver. Whatever problem I met during the day, I used my cell phone for the answer. Without my cell phone I have become more self­dependent and a self­problem solver.

I also found that my sleep wasn’t as good as it had been in the past. Screens stimulate (刺激) your mind and can affect your natural sleep patterns.5. However, I did not have the self­control to do this. I would go to bed with a stimulated mind causing me to have a poor night sleep.

A.It made me less social.

B.I found that I was addicted to my phone.

C.Having a cell phone split my attention in half.

D.I know that is not good for my health.

E.The answer to this is to turn off your phone a few hours before bed.

F.These phone­free travels were some of the most liberating moments of my life.

G.It was my watch, my alarm clock, my email, my maps, my wallet, and my way to talk with friends.

高二英语七选五中等难度题查看答案及解析