Are you nearsighted？Do you wear glasses？Many of you may say "yes".
In fact，China's young people have the highest rate of nearsightedness in the world，according to a report from the World Health Organization.More than 70 percent of middle school students in China are nearsighted.
In August，a plan to solve this problem was introduced.It tries to cut down the rate（率）of
nearsightedness of middle school students to less than 60 percent by 2030.Schools across the country are taking action to meet this goal.
Luoyang Experimental School in Henan starts with its desks.It has desks with a board above desktop.The board stops students from lowering their heads too close to their desktops.More than 400 students have used them so far，More students will do soon.
Similarly，the Chaoyan Branch School is now providing desks and chairs according to students' height.Studies have shown that proper desk height can prevent nearsightedness.
Spending more time outside can also stop students from getting nearsightedness.The Yucai Middle School connected to Chengdu No.7 High School make sure that its students play outside for at least 80 minutes every day.We have a P E.class and a 20-minute break in the morning and afternoon to do exercise，" said Sun Zihan，14.
Staring at screens can also hurt our eyes.Beijing 101 Middle School has a solution to this problem.In its classrooms，there are special boxes for keeping students' mobile phones. "We have to hand in our mobile phones every morning and get them back after school， "said Huang Jiameng，15.
（1）How many middle school students in China are nearsighted？
More than 70 percent of middle school students.More than 70 percent of middle school students.
（2）Why are the desk designed with a board above the desktop？
Because the board stops students from lowering their heads too close to their desktops.Because the board stops students from lowering their heads too close to their desktops.
（3）How do students reduce nearsightedness in the Yucai Middle School？
They play outside for at least 80 minutes every day.They play outside for at least 80 minutes every day.
（4）In the last paragraph，what does the underlined word "this" refer to？
Staring at screens.Staring at screens.
（5）Where are the students' mobile phones kept in Beijing 101 Middle School？
In special boxes.In special boxes.
【考點】說明文；衛(wèi)生與健康．
【答案】More than 70 percent of middle school students.；Because the board stops students from lowering their heads too close to their desktops.；They play outside for at least 80 minutes every day.；Staring at screens.；In special boxes.
【解答】
【點評】
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發(fā)布：2024/6/27 10:35:59組卷：0引用：1難度：0.4
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