《2025年暑假作业新疆青少年出版社八年级英语人教版》

三、阅读理解。
Everyone knows that good sleep is important for our health.Not everyone knows how important it is to sleep in the dark.A new report says sleeping with the light on could be bad for our health.Researchers say turning off the light when we sleep helps to keep away from diabetes(糖尿病) and heart disease. Sleeping with the light on could increase the risk of getting these diseases. The researchers said around 40 percent of the people sleep with some kinds of artificial(人工的) light. They said even light from a television or an alarm clock could be bad for our health. They added that the worst thing to sleep with is a main light.Sleeping in the dark is more difficult for people who live in cities,where there is a lot of outdoor light at night.
The researchers are from the Northwestern University Feinberg School of Medicine in Chicago, the USA. The lead researcher, Dr. Phyllis Zee, is an expert in sleep medicine. She said it is healthier for us to turn off all lights when we sleep.Her team did a study of the blood sugar levels of 20 people after nights of sleep. The people who slept with a light on had higher blood sugar levels the next morning compared with those who slept in total darkness.Dr. Zee said it can stimulate(刺激) brain activity, which raises blood sugar levels. She said there are three things we can do to reduce(降低) the risk of illness: turn off the light, never sleep with white or blue light and wear an eye mask.
1.According to the text, what will probably happen if we always sleep with the light on?
A.It's helpful to keep away from diabetes and heart disease.
B.It's more difficult to sleep in the dark.
C.It may increase the risk of getting some diseases.
D.It's more often to sleep with some kinds of artificial light.
2.Where is there a lot of outdoor light at night?
A.In the city.
B.In the countryside.
C.In the hill.
D.In the town.
3.What does the underlined word “it” refer to?
A.the darkness
B.the light
C.the brain activity
D.the blood sugar level
4.Which of the following is NOT the way to reduce the risk of illness caused by light?
A.Eating less chocolate.
B.Turning off the lights.
C.Never sleeping with white or blue light.
D.Wearing an eye mask.
5.What is the best title for the text?
A.The Good Sleep
B.Sleep and Light
C.The Artificial Light
D.The Worst Time to Sleep

答案： 1~5. CABAB