Watching TV or phone screens(屏幕) before sleeping is bad for children’s health. Screen time means children go to bed later. They have less sleep, and they can not sleep well. Screens are small, so children can look at them in bed.

        Children need more sleep than people of other age groups. For pre-school children, they need 13 hours of sleep a night. There are some reasons(原因) why watching screens are bad. First, the light from screens makes children think it is not in the evening. Then, videos keep children’s brains active, so they cannot sleep. At last, when children are watching screens, they are not exercising. But children need physical activities to make them tired.

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1. It’s bad for kids to watch TV __________.

A    after breakfast

B    in the afternoon

C    before going to bed

D    after using phones

2. Which of the following(下列的) people should sleep longer?

A    A 9-year old student.

B    An English teacher.

C    An old woman.

D    A middle-aged man.

3. How many reasons did the writer mention(提到)?

A    One.

B    Two.

C    Three.

D    Four.

4. What makes children hard to sleep?

A    Screen lights.

B    Videos.

C    Exercise.

D    Sleep.

5. What can make children feel tired?

A    Watching TV.

B    Going to bed.

C    Having classes.

D    Taking exercise.