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题型:阅读理解-阅读单选 难度:0.65 引用次数:110 题号:11649185

Genetic testing offers people insight into the types of diseases they are most likely to develop — but a new study suggests most people do not alter their lifestyles based on this information. These tests — known as genome sequencing — analyze a person's DNA, telling patients about their known risk for diseases like cancer or diabetes. But being told you’re at a higher risk for lung cancer doesn’t seem to motivate anyone to quit smoking or alcohol, this study suggests. Because of this, the scholars argue that genetic testing should be banned as a tool for improving people's health.

Today’s finding came from pulling data from 18 other studies that followed people after they received the results of genetic tests. Receiving information about genetic risks didn’t inspire people to eat differently, exercise more, or stop smoking, "Expectations have been high that giving people information about their genetic risk will empower them to change their behavior, but we have found no evidence that this is the case," study author Theresa Marteau, director of behavior and health research said in a press release.

Genetic testing, which the National Institutes of Health says costs anywhere from $100 to $2,000, has become much more accessible as commercial testing companies such as 23andMe and Sure Genomics have sprung up. These companies are not allowed to share disease risk estimates with consumers thanks to the Food and Drug Administration. However, today’s study didn’t specify whether the genetic testing were purely from academic sequencing, or if any of these companies had had a role in supplying the data.

Genetic testing doesn’t get people to change their behavior for the better, but it doesn't have any known negative effects either. Knowing the results of these tests didn't change people's depression or anxiety levels. And there's no indication that testing inspires people to pick up risky or dangerous health habits either, the study found.

Actually a genetic predisposition to a certain disease is common among people.   Some people are born weak in heart. Some are innately vulnerable in digestive system. But these most common risk factors usually don't raise a person's chances of getting the disease by a significant amount. It's possible that some of the patients in the study had substantially high disease risks based on their DNA profile, but those patients tend to be rather rare. "It’s still likely that communicating this type of information is very valuable to some people, but it’s just that there aren’t that many of those people," Zikmund-Fisher from the University of Michigan said. "The idea that providing genetic risk information is going to be transformative to everyone seems unlikely."

1. Why did some experts suggest stopping genetic testing?
A.Genome sequencing aren’t accurate in detecting certain disease risks.
B.Genetic testing results fail to encourage people to remove bad habits.
C.Genetic testing does neither good nor harm to people’s behaviorial improvement.
D.Genetic testing results are offered by commercial testing companies.
2. The underlined word predisposition to in the passage is closest in meaning to _____.
A.testing onB.prediction aboutC.sensitivity toD.insight into
3. Which of the following statements is TRUE according to the passage?
A.Theresa Marteau believes genetic testing helps to change people’s behaviors.
B.Sure Genomics is forbidden to deliver illness risk expectations to patients.
C.Genetic testing results are totally coming from academic sequencing.
D.Genetic testing results in a way worsen the patients’ moods and emotions.
4. It’s said that people’s unconcerned response to genetic testing doesn’t cause much harm because ______.
A.getting rid of bad life habits doesn’t do much good to people’s health
B.almost all people have certain disease risks based on genetic testing
C.providing genetic risk information interferes with the medical treatment
D.genetic testing shows few people are at a high risk of getting certain diseases

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阅读理解-阅读单选(约400词) | 适中 (0.65)
【推荐1】

If you have an allergy to some food, even a very tiny bit of food can make you sick. Lots of kids have food allergies — about 3 million in the United States alone.

The foods that cause the most food allergies include peanuts and other nuts; seafood, such as shrimp; milk, particularly cow's milk; eggs; wheat.

What Is a Food Allergy?

Food allergies occur when your immune system makes a mistake. Usually, your immune system protects you from germs and disease. It does this by making antibodies that help you fight off bacteria, viruses, and other tiny organisms that can make you sick. But if you have a food allergy, your immune system mistakenly treats something in a certain food as if it's really dangerous to you.

What's a Reaction Like?

In the most serious cases, a food allergy can cause anaphylaxis (过敏症). This is a sudden, severe allergic reaction in which several problems occur all at once and can involve the skin, breathing, digestion, the heart and blood vessels. A person's blood pressure can drop, breathing tubes can narrow and the tongue can swell. People at risk for this kind of reaction have to be very careful and need a plan for handling emergencies, when they might need to get special medicine to stop these symptoms from getting worse.

What Will the Doctor Do?

If you think you may be allergic to a certain food, let your parents know. They will take you to the doctor to get it checked out. If your doctor thinks you might have a food allergy, he or she will probably send you to see a doctor who specializes in allergies. The allergy specialist will ask you about past reactions and how long it takes between eating the food and getting the symptom, such as hives. The allergist also may ask about whether anyone else in your family has allergies or other allergy­related conditions. The allergist may also want to do a skin test. This is a way of seeing how your body reacts to a very small amount of the food that is giving you trouble.

1. According to the passage, you will have a food allergy when     your immune system ________.
A.recognizes tiny organisms in a certain food
B.mistakenly makes antibodies to help fight off something in a certain food
C.prevents something harmful in the food from entering your digestive system
D.releases chemicals to remove harmful things in a certain food
2. In the sudden and severe allergic reaction, which of the following may happen?
A.Blood pressure rising.
B.Lips swelling.
C.Breathing difficulty.
D.Heart beating becoming slow.
3. Which of the following suggestions is given to those at risk of severe allergic reaction?
A.Taking medicine as soon as an allergic reaction appears.
B.Avoiding eating any food when going outside.
C.Always carrying with special medicine for possible symptoms.
D.Preparing a plan for dealing with emergencies ahead of time.
4. What will an allergist do to check your food allergy out?
A.Ask you about the allergy­associated information.
B.Give you some medicine right away.
C.Enquire about your present feeling towards the food.
D.Give you a shot of liquid extract of food.
2020-08-29更新 | 27次组卷
阅读理解-阅读单选(约340词) | 适中 (0.65)
【推荐2】Would you eat a ready meal from the fridge rather than cook from scratch? Have you been doing Internet shopping rather than going to the stores? What can’t you be bothered to do?
A study into how lazy British people are has found more than half of adults are so idle that they’d catch the lift rather than climb two flights of stairs.
Just over 2,000 people were quizzed by independent researchers at Nuffield Health, Britain’s largest health charity. The results were startling.
About one in six people surveyed said if their remote control was broken, they would continue watching the same channel rather than get up.
More than one third of those questioned said they would not run to catch a bus. Worryingly, of the 654 respondents with children, 64% said they were often too tired to play with them.
This led the report to conclude that it’s no wonder that one in six children in the UK are classified as obese before they start school. Dr Sarah Dauncey, medical director of Nuffield Health, said, “People need to get fitter, not just for their own sake, but for the sake of their families, friends and evidently their pets too. If we don’t start to take control of this problem, a whole generation will become too unfit to perform even the simple tasks.”
And Scotland’s largest city, Glasgow, was shamed as the most indolent city in the UK, with 75% surveyed admitting they do not get enough exercise, followed closely by Birmingham and Southampton, both with 67%.
The results pose serious challenges for the National Health Service, where obesity­related illnesses such as heart disease and cancer have been on a steady increase for the past 40 years and are costing billions of pounds every year.
1. What do lazy British people probably choose to do?
A.Go to stores.B.Catch the lift.
C.Cook from scratch.D.Climb flights of stairs.
2. How many people surveyed don’t play with children because of tiredness?
A.About 419.B.About 333.
C.About 654.D.About 1280.
3. What is the potential result of more and more people, including children, getting obese?
A.People will not get enough exercise.
B.People will not have enough money.
C.People will not be able to do the easy job.
D.People will not cure themselves of heart disease.
4. What is the author’s attitude towards the finding of the study?
A.Indifferent.B.Doubtful.
C.Negative.D.Supportive.
2015-12-02更新 | 97次组卷
阅读理解-阅读单选(约340词) | 适中 (0.65)
名校
文章大意:这是一篇说明文。文章主要介绍了丹麦一个名为Heartrunner的智能手机应用程序,可以及时为心脏病患者提供帮助。

【推荐3】These days, more people in Denmark are surviving serious heart attacks. Some of that good news is thanks to a smartphone app called Heartrunner.

Many heart attacks happen when people are not near doctors. The most serious type of heart attack is when the heart stops. In Denmark, the survival rate for people whose heart had stopped when they were not near doctors used to be 4%. In the past 20 years, it has risen to 16%. Denmark has seen a dramatic change in survival from heart attacks after it began recruiting (招募) volunteers and arming some of them with smartphone technology.

Denmark’s emergency number is 112. Call center workers can use Heartrunner to contact up to 20 volunteers within 1.1 miles of an emergency. Workers also send out an ambulance. They often tell the caller how to start CPR. Heartrunner sends an alert (警报) to volunteers. It asks, “Can you run?” If a person says yes, the app sends the address. If there is an AED nearby, the app tells volunteers where to find it.

More than 100,000 people in Denmark volunteer for Heartrunner. About 75% of them are not health care workers. That’s OK, said expert Freddy Lippert. “The patient is dead, and if you don’t do anything, nine out of 10 will be dead forever. The faster CPR begins, the better the chance of restarting the heart. In Denmark, everyday people responded faster than professionals to more than four in 10 heart attacks.”

Erik Kaxe, 81, lives in a small Danish town. Recently, his heart stopped. His wife called 112. The ambulance was sent. And the Heartrunner alert went out. Within minutes, 10 strangers who lived nearby showed up at their house. The ambulance came 17 minutes after the call. So many helpers showed up that they were able to do far more than just CPR. When the ambulance showed up, Kaxe was breathing again. He lived and is now back at home.

“Dying wasn’t difficult” he said. “But waking up is.”

1. What do the numbers mentioned in paragraph 2 show?
A.Heartrunner has raised a lot of concern.
B.Heartrunner has made a big difference in Denmark.
C.An increasing number of people have suffered heart attacks.
D.Danish doctors have successfully improved heart attack survival rates.
2. How does Heartrunner work?
A.It calls 112 immediately.B.It contacts an ambulance.
C.It sends helpers to victims.D.It sends alerts to AED owners.
3. What can we infer from Freddy Lippert’s words?
A.Every minute counts for victims.B.Ambulances respond slowly in Denmark.
C.There is a serious lack of health care workers.D.Volunteers for Heartrunner should be professionals.
4. Why does the author mention Kaxe?
A.To tell a touching story.B.To remind us to value life.
C.To show how Heartrunner saves lives.D.To teach us how to use the life-saving app.
2024-02-28更新 | 50次组卷
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