学进去

Babies sleep up to eighteen hours a day. Mrs. Thatcher and Napoleon both said they only needed to sleep three or four hours a night. Sleep—No one can live without it. But how much do we really need?

Research by the National Sleep Foundation in Washington says that we all need eight hours’ sleep every night. Scientists have found that people who sleep for less than six and a half hours a night are more often ill than people who sleep for eight hours. Going without sleep also increases the chance of serious illness. Workaholics who sleep for less than five hours often die young, and do less well at work.

The scientists found that, on average(平均起来), adults sleep for seven hours a night, with 32% sleeping less than six hours. It also says that the idea that we need less sleep when we get older is completely untrue. “People have no idea how important sleep is to their lives,” Dr. Thomas Roth, director of the Foundation says. “Good health needs good sleep.”

“But not too much of it,” says Professor Jim Home of Loughborough University. “Sleep is like food and drink,” he believes, “You would always like to have a little bit more, but that doesn’t mean you need it.” Professor Home studied a group of people who could spend as many hours as they wanted in bed; after sleeping ten hours, they didn’t find that they could get up easily either. And people who sleep for more than nine hours a night die younger than people who usually sleep for seven or eight!

根据语篇内容，选择最佳选项。
1．From Paragraph 1, we can learn that ________.

A．babies spend most of their time sleeping

B．there are some people who can live without sleep

C．famous people always need less sleep than common people

2．The underlined word “workholics” in Paragraph 2 most probably means “________”.

A．熬夜者

B．职工

C．工作狂

3．According to Paragraph 3, which of the following is TRUE?

A．People need less sleep when they get older.

B．Adults should sleep for seven hours a night.

C．About one third of adults sleep for less than six hours a night.

4．According to Professor Jim Home of Loughborough University, ________.

A．people who like eating and drinking usually sleep well

B．it’s best for people to sleep seven or eight hours a night

C．people can get up more easily after sleeping for ten hours

5．What’s the passage mainly talk about?

A．How much sleep we need.

B．Why people sleep at night.

C．When people should go to sleep.