Children who spend more time outdoors may have a lower risk of becoming nearsighted, new research suggests.
In the study, researchers looked at about 1,900 schoolchildren. The scientists found that the kids who had been instructed to spend more time outdoors over three years were 23 percent less likely to develop nearsightedness during this time than those who had not been instructed to spend more time outdoors. Moreover, among the kids who did become nearsighted during the study, the degree to which their eyesight worsened was slightly smaller among those who spent more time outdoors.
The researchers selected six schools and required the children, whose average age was 7 at the start of the study, to attend one additional 60-minute class of outdoor activities during each school day for three years. The parents of these children were also encouraged to engage their children in outdoor activities after school, especially during weekends and holidays. The other half of the children, from another six schools, continued their usual activity patterns. After three years, 30.4 percent of the kids in the intervention(干預(yù)) group had become nearsighted, compared with 38.5 percent of the kids in the other group.
It is not clear exactly why spending more time outside would benefit children’s eyesight, the researchers said. However, some research has suggested that the higher levels of light intensity found outdoors may increase the release of the chemical dopamine(多巴胺) of the eye. In turn, dopamine is known to restrain(抑制) the type of growth in the eye that is associated with nearsightedness.
Based on the new results, the researchers recommend that children spend more time outdoors because of the potential benefits to their eyesight. However, it’s important to protect kids’ skin and eyes from UV light, which can be damaging.
1.What did the children in the intervention group do during each school day?
A. Attend an extra class of outdoor activities.
B. Continue to do their usual activities.
C. Spend one hour in doing eye exercises.
D. Participate in outdoor activities with parents.
2.What can be inferred about the chemical dopamine?
A. It can contribute to poor sight. B. It can damage people’s brain
C. It is beneficial to eyesight. D. It means low levels of light intensity.
3.What may be discussed in the following paragraph?
A. How to design outdoor activities for kids.
B. How to prevent kids becoming nearsighted.
C. How to protect kids’ skin and eyes from UV light.
D. How to encourage kids to join in outdoor activities.
4.Which can serve as the best title for the passage?
A. The More Time Outdoors, the Better
B. Kids May See Better if They Play Outside
C. It’s Time to Engage Kids in Outdoor Activities
D. Researchers Found a Cure for Nearsightedness
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Start a conversation.
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Choosing friends with common interests is important in building friendship as these interests would always bring you and your friends together. Hanging out will always be a pleasant experience.
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Book tickets in advance
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Sign up for special tours.
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For shorter lines,fewer people,and better opportunities to interact and enjoy the attraction,stop by during the week. In many cases,you'll have the place to yourself. Take it one step further,and head to museums,galleries or tourism hot spots after 2 pm.4.
Watch the weather
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When others get off the train to finally go home, Leonie Muller stays behind. That's because she is already home: The train is her apartment, and she says she likes it that way. The German college student gave up her apartment in spring. "It all started with a quarrel I had with my landlord," Muller told The Washington Post via e-mail. "I immediately decided I didn't want to live there anymore and then I realized: Actually, l didn't want to live anywhere anymore."
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The only problem? "Possessing a headset that reduces most surrounding noises is important," she said.
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A. She planned to act against tradition.
B. She had an argument with her landlord.
C. She wanted to visit more people on the way.
D. She had to finish her graduate paper on the topic.
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A. She can avoid the landowner. B. She can possess a headset.
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A. There are opportunities everywhere in life.
B. The next adventure is coming soon
C. People need to make changes in their life.
D. People need to follow in her footsteps to live on trains.
4.What does the underlined word "it" in Paragraph 4 refer to?
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