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题型:阅读理解-阅读单选 难度:0.65 引用次数:67 题号:11779294

For many students today, distance learning has become the new normal. But distance learning means lots of screen time.

Research has shown that kids who spend a lot of time on screens are more likely to have various health problems and trouble with reading and language. Yet in the countries still suffering from the epidemic (流行病),screens are the only safe way for many young people to learn or socialize. It's difficult for kids and teens to navigate this dilemma.

In one 2019 study, Taren Sanders, a health scientist at Australian Catholic University in North Sydney, looked at how kids spent their screen time. His group then investigated whether the type o£ screen time made a difference in health and school achievements. The researchers sorted screen time into five types: passive (such as watching a movie) , interactive (such as . playing a video game), social, educational or something else.

Educational screen time was linked to doing better in school and had no bad health effects. More passive screen time was linked to worse outcomes in health and school achievements, Sanders' group found, compared with the other categories. But the impact was quite small. Major problems showed up mainly in kids spending more than eight hours a day on screens.

The most serious problem caused by too much screen time is that people usually sit still while they are in front ,o£ a screen. "If students are spending all day sitting on screens, when are they moving?” asks Guerrero, who studies patterns of diseases. “Extended time sitting and not moving around leads to obesity, diabetes, heart disease and other health issues. So an important question to ask yourself is not how much screen time are you getting, but how active are you?"

Sanders agrees. "Overall, I'm not too concerned about the additional screen time kids are having because of distance learning," he says. “The things you should worry about: The amount of exercise they get and the way they spend their free time. "

1. What does the underlined word "navigate, in Paragraph 2 mean?
A.Handle.B.Assume.C.Observe.D.Seize.
2. What does the 2019 study find?
A.There are mainly five types of screen time.
B.Educational screen time damages kids' health.
C.Passive screen time has a major influence on kids.
D.Too much screen time is the major cause of problems.
3. What does Guerrero concern most?
A.The problem of lacking exercise.
B.Kids way of spending their free time.
C.The number of diseases related to screen time.
D.Distance learning causes additional screen time.
4. What is the purpose of the text?
A.To guide parents to educate their kids.
B.To explain the finding of a new study.
C.To discuss the influence of screen time.
D.To analyse the effect of distance learning.

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