About 20 percent of schoolchildren are too heavy and fat, according to Professor Ma Guansheng. “Being overweight is bad for children’s health. So, we have to stop the rise in overweight among children,” Ma said.

Recently, the new national Chinese Dietary Guidelines(中国膳食指南) provided advice for children between 6 and 17. Here are the five most important rules:

• Choose food and prepare for food more carefully.

• Eat a good breakfast and choose healthy snacks(零食).

• Drink milk and enough water every day.

• Do more outdoor activities with over 60 minutes of physical activity every day; spend less time looking at screens.

• Check physical development regularly(定期) to keep the healthy weight growth.

Because of COVID-19, some schoolchildren take classes online and eat more meals at home. They may gain weight easily. So what should parents pay attention to? First, every parent should do their best to prepare three meals a day. It helps children develop a good eating habit. Second, since children spend much more time looking at screens when taking online classes, so be sure to give them more time for outdoor activities.

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1.What does Ma Guansheng suggest doing?

A Providing advice for parents.

B Improving children’s health.

C Stopping children from getting fat.

D Teaching children to lose weight.

解析：选C。C 细节理解题。根据第一段的“So, we have to stop the rise in overweight among children”可知，马冠生认为肥胖对学龄儿童的健康有害，我们必须阻止更多的儿童超重。故选C。

2.Who do the five rules not apply to(适用)?

A 7-year-old Lili.

B 10-year-old Maomao.

C 15-year-old Daming.

D 18-year-old Chen Jie.

解析：选D。D 推理判断题。根据第二段的“provided advice for children between 6 and 17. Here are the five most important rules”可知，这五条原则适用于六到十七岁的孩子。D项中18岁的陈洁不在该范围内。故选D。

3.The new national Chinese Dietary Guidelines advise children not to_______.

A have breakfast

B drink milk

C use phones often

D weigh themselves

解析：选C。C 细节理解题。根据第四条规则中的“spend less time looking at screens”可知要减少看屏幕的时间，即不要经常玩手机。故选C。

4.The underlined part “gain weight” may mean _______.

A feel tired

B get fat

C become happy

D stay awake

解析：选B。B 词义猜测题。根据前一句的“some schoolchildren take classes online and eat more meals at home.”一些学生在家上网课(动得少)并且在家吃饭的时间更多，因此容易造成体重上升，即变胖。故选B。

5.Who is the passage written for?

A Parents.

B Children.

C Teachers.

D Doctors.

解析：选A。A 推理判断题。通读全文并结合最后一段中的“So what should parents pay attention to?”可知，本文主要是写给父母读的。故选A。