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题型:阅读理解-阅读单选 难度:0.65 引用次数:259 题号:22749711

If the benefits of physical activity were made into a pill, everyone would be on it. Studies show that moving improves nearly every aspect of health: boosting sleep, strength, and mental well-being. Still, most people don’t exercise nearly enough. According to data published in 2023, less than a third of U.S. adults get the government-recommended amount of physical activity in their free time: at least 20 minutes of moderate-intensity aerobic exercise per day, plus a couple of muscle-strengthening sessions each week.

Why is it so tough to get people to do something so good for them? Physical limitations, health problems and modern life are certainly factors for many people. But research suggests there’s another factor: our brains don’t want us to exercise. For most of human existence, people had to be physically active to carry out the basic functions of life, such as finding food. Humans evolved (进化) to tolerate a high level of activity-but also to conserve energy for when movement was unnecessary, explains Daniel Lieberman, a human evolutionary biologist. As a society, we no longer move much in daily life, but the evolutionary instinct (本能) to conserve energy remains, Lieberman says. “That voice ‘I don’t want to exercise,’ is completely normal and natural,” he says.

Physical-activity researcher Matthieu Boisgontier demonstrated that phenomenon in a 2018study. He gave people control of a digital avatar (化身) while they were connected to brain-activity monitors. They were instructed to move the avatar away from images of sedentary (久坐的) behavior that appeared on screen and toward images of physical activity. The study found that avoiding sedentary behavior took more brain power, suggesting that we have an “automatic tendency” to pick relaxing over moving.

That conclusion shows up repeatedly in research. Studies show, for example, that people consistently choose to take a lift instead of the stairs. “That natural instinct isn’t bad-it’s just that modern life gives us so many chances to give in to our preference for rest that we have reached an extreme that is no longer beneficial to our health,” Boisgontier says.

1. What do data published in 2023 suggest?
A.U. S. adults have poor health awareness.B.The recommended activities are impractical.
C.Most Americans lack sufficient physical activity.D.Muscle-strengthening sessions deserve attention.
2. What makes people unwilling to exercise according to Lieberman?
A.The physical limitations.B.The basic structure of the brain.
C.The convenient modern life.D.The natural energy-saving tendency.
3. What does the underlined part “that phenomenon” in paragraph 3 refer to?
A.Sedentary behavior took much brain power.B.Most people tend to avoid physical activity.
C.Humans evolved for a high level of activity.D.Brain-related activities attract modern people.
4. What is Boisgontier’s attitude toward people’s physical inactivity?
A.DoubtfulB.Reserved.C.Approving.D.Opposed.
【知识点】 科普知识 说明文

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【推荐1】People have always supposed that there is a huge gulf between animal evolution and human development. However, recent research into animals indicates that animals are continuously designing innovative methods to finish their tasks. Examining the nature and results of their creativity can help us understand evolution.

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A.They create innovations in different ways.
B.They are both heavy tool users.
C.They are both creative.
D.They kill other animals in the same cruel way.
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A.It is equally distributed among animals.B.Animals’ innovations are easy to be identified.
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