Section 11: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 39 to 43.
Everyone knows that good sleep is vitally important for our health. Not everyone knows how important it is to sleep in the dark. A new report says that sleeping with the light on could be bad for our health. Researchers say that turning off the light when we sleep helps to keep away diabetes and heart diseases. Sleeping with thelight on could increase the risk of getting these diseases. The researchers said that around 40 percent of people sleep with some sort of artificial light. They said even the light from a television or alarm clock could affect 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, USA. Dr Phyllis Zee, who is an expert in sleep medicine, is the lead researcher. She said that it is healthier for us to turn off all lights when we sleep. Her team conducted 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 to those who slept in total darkness. Dr. Zee said this is because light stimulates brain activity, which raises blood sugar levels. She said there are three things we can do to reduce the risk of illness. The first thing is we should turn off the lights. Moreover, we should never sleep with white or blue light. Finally, it is a good idea to use a blackout curtain or wear an eye mask.
Question 39: What is the best title for the passage?
A. Light and the Risk of Illness B. Sleep and Light
C. Sleep and the Risk of Illness D. Sleep and Sleep Medicine
Question 40: According to the passage, why do people who live in cities find sleeping in the dark difficult?
A. Because all people in cities never turn off the lights when they sleep.
B. Because they sleep with an artificial light, like a television.
C. Because there is a lot of outdoor light at night in cities.
D. Because people in cities like sleeping with white or blue light.
Question 41: The word "stimulates" in paragraph 2 is closest in meaning to ______________
A. increases B. generates C. encourages D. expands
Question 42: The pronoun "They" in paragraph 1 refers to ______________
A. the researchers B. people sleeping with lights on
C. diabetes and heart diseases D. people in cities
Question 43: Which of the following is NOT mentioned as the things that we can do to reduce the risk of illness?
A. Use a blackout curtain or wear an eye mask.
B. Never sleep with white or blue light.
C. Sleep with the light from a television or alarm clock.
D. Turn off the light.
