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After a day’s hard work, we need some sleep. During the sleep, the fatigue(疲劳)of the body disappears and recuperation (恢复) begin
After a day’s hard work, we need some sleep. During the sleep, the fatigue(疲劳)of the body disappears and recuperation (恢复) begin
admin
2015-03-17
31
问题
After a day’s hard work, we need some sleep. During the sleep, the fatigue(疲劳)of the body disappears and recuperation (恢复) begins. The tired mind gathers new energy, and the memory improves.
Some adults require little sleep; others need eight to ten hours in every twenty-four hours. Infants(婴儿) sleep sixteen to eighteen hours daily, the amount gradually diminishing as they grow older. Young students may need twelve hours; university students may need ten. A worker with a physically demanding job may also need ten, whereas an executive working under great pressure may manage on six to eight. Many famous people have little sleep. Napoleon Bonaparte, Thomas Edison and Charles Darwin apparently averaged only four to six hours a night.
Whatever your individual need, you can be sure that by the age of thirty you will have slept for a total of more than twelve years. By that age you will also have developed a sleep routine; a favorite hour, a favorite bed, a favorite position, and a rule you need to follow in order to rest comfortably.
Investigators have tried to find out how long a person can go without sleep. Several people have reached more than 115 hours—nearly five days. Whatever the limit, it is absolute. Animals that kept awake for from five to eight days have died of exhaustion. The limit for human beings is probably about a week.
The author implies that if human beings are kept awake for more than a week the result
选项
A、is hard to imagine
B、will probably be a mental breakdown
C、is difficult to describe
D、will probably be dead
答案
D
解析
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本试题收录于:
大学英语三级A级题库大学英语三级分类
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大学英语三级A级
大学英语三级
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