High school biology teacher Kelly Chavis knew smartphones were a problem in her class.But not even the students realized how much of a problem the devices were until Chavis did an in-class experiment.
For one class period，students used a whiteboard to count every Snapchat，Instagram，text，call that appeared on their phones.Chavis is among a growing number of teachers，parents and health experts who believe that smartphones are now partly to blame for increasing the levels of student anxiety."One girl，just during the one hour，got close to 150 Snapchat notifications.150！"she said.
Jean Twenge，a psychology professor at San Diego State University in California，said it is not a coincidence that youth mental health issues have risen with the number of phones."This use of phones has led to a loss of sleep and face-to-face interactions necessary for their growth，"she said.
Researchers are still not sure whether phones cause student depression or depression causes phone use.But nearly 60 percent of parents said they worry about the influence of social media on their child's physical and mental health.
Both schools and parents are starting to take steps to deal with the problem.Many public schools pay outside companies to watch students' social media activity for signs of anxiety.Other schools invite in yoga teachers and comfort dogs to help calm students.
（1）What's the purpose of Chavis's experiment？ CC
A．To see how many students have smartphones.
B．To find out how popular her students are.
C．To show smartphones influence teenagers greatly.
D．To tell her students how to use smartphones wisely.
（2）How did Kelly Chavis feel about the result？ AA
A．Shocked.
B．Excited.
C．Satisfied.
D．Frightened
（3）Which of the following is true according to Jean Twenge？ DD
A．Students are now under great stress.
B．Students spend too much money on smartphones.
C．Over-using phones cause drops in students' grades.
D．Over-using phones may harm students' body and mind.
（4）What might be talked about if the passage is continued？ CC
A．How other schools deal with students' phones.
B．Whether the ways to handle phones are effective.
C．How some parents deal with their children's phones.
D．Whether students are willing to give up using phones.
【考點】說明文．
【答案】C；A；D；C
【解答】
【點評】
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發(fā)布：2024/5/24 8:0:9組卷：27引用：4難度：0.6
相似題
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"You know more than 90% of the international students who were studying the US when COVID-19 hit and college campuses were closed have to remain in the US and this creates such trouble in their lives and such uncertainty that is unreasonable." said a lady from a university.
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The government said that the policy speaks for itself and that online coursework is not worth a visa.So far，not any sign of change has been within sight.As students are waiting for the policy to improve，their fall programming and their future remain in limbo.
（1）Why would international students prefer to stay in the US during the pandemic？
A．They couldn't delay the program for a year.
B．They can make full use of the library resource.
C．They wouldn't bring any potential danger to their family.
D．They can learn better with their classes moved online.
（2）What do international students staying in the United States think of the new rule？
A．The new rule treats them as American citizens.
B．The new rule shows great unreasonable opinion against them.
C．The new rule guides them to plan to return to the US.
D．The new rule treats them like low-level students in school.
（3）What is the government's attitude towards the new rule？
A．Favorable.
B．Neutral（中立）.
C．Unfavorable.
D．Unclear.
（4）What does the underlined phrase "in limbo" in the last paragraph mean？
A．Horrible.
B．Flexible.
C．Uncertain.
D．Unbelievable.發(fā)布：2025/1/6 15:30:8組卷：0引用：1難度：0.5 -
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ADHD is one of the great problems of modern childhood.One study after another indicates that contact with nature gives huge benefits to ADHD children.However，we spend money on drugs rather than on green places.
The life of old people is measurably better when they have access to nature.The increasing concern for the growing population of old people is in quality rather than quantity of years.And study after study finds that a garden is the single most important thing in finding that quality.Even problems with crime and aggressive behaviour are reduced when there is contact with the natural world.
We need the wild world.It is essential to our wellbeing，our health and our happiness.
（1）According to the author，people enjoyto seek nature.
A．jogging on the street
B．running in the gym
C．shopping in the supermarket
D．sitting in the garden
（2）From the second paragraph，we can see that.
A．Children don't want to approach nature
B．children probably spend less time in nature nowadays
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D．children tend to be happier as a result of their material satisfaction
（3）In what way do people benefit from their contact with nature？
A．Children with ADHD can be cured.
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C．Problems with crime and violent behavior will easily be solved.
D．A garden nearby improves the quality of old people's life.
（4）what is the main idea of this passage？
A．Access to nature improves our life.
B．Nature treats children for ADHD.
C．Getting close to nature reduces crime.
D．Man can't live without natural areas.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.5 -
3．It is widely believed that biodiversity（生物多樣性）is promoted to save species.But in reality species exist only as part of ecosystems and cannot survive unless their ecosystems are protected along with as much as possible of the diversity they contain.
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（1）What can we infer from paragraph 1？
A．The loss of any species can affect humans.
B．Endangered species are paid more attention to by humans.
C．Species can still survive when their ecosystems are destroyed.
D．Ecosystem protection is as important as diversity protection.
（2）What does the underlined word "ecocide" in paragraph 2 mean？
A．Ecosystem protection.
B．Reduction of the number of species.
C．Serious damage to habitats.
D．Habitats protection.
（3）What's the direct cause of the terrible state of the hotspots？
A．Population growth in hotpots.
B．Migration out of these areas.
C．Global warming.
D．The global average population growth rate.
（4）What's the author's opinion on protecting the hotspots？
A．It's simple to carry out.
B．It leads to the increase of tourists.
C．It's closely connected with local people.
D．It suggests that the local people are well educated.發(fā)布：2025/1/6 16:30:6組卷：0引用：1難度：0.5