Recently, because more students use computers for a long time to have online lessons, more of them are feeling eyestrain（眼睛疲劳). A lot of eye doctors have studied this problem and have found ways to solve it. Following their advice will help keep computer users more comfortable.

★Lighting

The light in a room shouldn’t be brighter （明亮的） than that of the computer screen. Maybe in many students’ rooms, however, the light is far brighter than it should be.

★The screen

Many people think that having light letters on a dark background（背景） can cause less eyestrain, but they are wrong. In fact, it is best to have dark letters on a light background.

★Angle（角度） of looking at the computer screen

Students should sit a little higher than the computers so that they are looking down at the computer screens. The top of the monitor（显示器） should not be so high as the top of a student’s head.

★Breaks

If students spend a long time in front of a computer screen, it can cause eyestrain. Students should take a break by looking away from the screen every fifteen or twenty minutes. During that time they should either close their eyes or look at things far away.

1—2题完成句子；3题简略回答问题；4题找出并写下全文的主题句；5题将文中画线句子译成汉语。
【小题1】The light in a room shouldn’t be brighter than that of the ________ .
【小题2】In fact, it is best to have ________ on a light background.
【小题3】How often should students take a break away from the computer screen? ___________________________________________
【小题4】___________________________________________
【小题5】___________________________________________