Question

【題目】 A new study says the habit of sleeping in（睡懶覺）on weekends may not be such a good idea for your health.

36 healthy young men and women took part in the study. They were divided into three groups and were followed over 30 days.

The first group could sleep for nine hours each night for the 30 days. The second group had other only five hours of sleep every night. The third group had five hours on weekdays but was allowed to sleep as long as they wanted on the weekend. But on Monday, the third group was put back to the sleep schedule（周期）of only five hours a night.

The study showed that the first and the third groups ate more snacks after dinner and put on weight during the study, men much more than women.

What was surprising the scientists was the third group who slept in on weekends. "Even though people slept as much as they could, it was not enough," Dr. Wright said. "As soon as they went back to the short sleep schedules on Monday, the ability of their body to control blood sugar was badly affected." "Not only that, the result showed increased sensitivity to insulin（胰島素）in both their muscles（肌肉）and their livers（肝臟）, the result wasn't found in other groups. The reason may be that their body clock had been changed.

【1】How many groups were the people divided into in the study?

A.3B.4C.5D.6

【2】How long did the third group sleep everyday？

A.5 hours everyday.

B.9 hours everyday.

C.9 hours on weekdays and 5 hours on weekends.

D.5 hours on weekdays and sleep as long as they wanted on weekends.

【3】From the study we know that __________.

A.women put on more weight than men

B.the sleep-deprived（睡眠不足的）people were more healthy

C.the second group didn't put on weight

D.women ate more snacks after dinner

【4】What happened to the members in the third group?

A.Their blood sugar was badly affected.

B.They had enough sleep.

C.They didn't change their body clock.

D.They had increased sensitivity to insulin in hand.

【5】What does the passage mainly tell us?

A.Sleeping is not important.

B.Sleeping too much on weekends may not be good for our health.

C.We can change our body clock as often as we can.

D.Adults don't need too much sleep.

Answer 1

【答案】

【1】A

【2】D

【3】C

【4】A

【5】B

【解析】

本文介紹了周末睡得太多可能對我們的健康不利。36名健康青年男女參加了這項研究。他們被分為三組，并進行了30天的隨訪。第一組在30天內(nèi)每晚可以睡9個小時。第二組每晚只睡5個小時。第三組在工作日有5個小時，但在周末可以想睡多久就睡多久。結果是第三組 的人的身體控制血糖的能力受到了嚴重的影響。他們的肌肉和肝臟對胰島素的敏感性都有所增加。原因是他們的生物鐘可能被改變了。

【1】細節(jié)理解題。根據(jù)“36 healthy young men and women took part in the study. They were divided into three groups and were followed over 30 days.”可知，36名健康青年男女參加了這項研究。他們被分為三組，并進行了30天的隨訪。故選A。

【2】細節(jié)理解題。根據(jù)“The third group had five hours on weekdays but was allowed to sleep as long as they wanted on the weekend.”可知，第三組在工作日有5個小時，但在周末可以想睡多久就睡多久。故選D。

【3】推理判斷題。根據(jù)“The study showed that the first and the third groups ate more snacks after dinner and put on weight during the study, men much more than women.”研究表明，第一組和第三組在飯后多吃零食，并且在研究期間體重增加，男性比女性多得多�？梢酝浦�，第二組體重沒有增加。故選C。

【4】細節(jié)理解題。根據(jù)“the ability of their body to control blood sugar was badly affected.”他們的身體控制血糖的能力受到了嚴重的影響�？芍�，第三組的成員的血糖受到了嚴重的影響。故選A。

【5】主旨大意題。根據(jù)“A new study says the habit of sleeping in（睡懶覺）on weekends may not be such a good idea for your health.”一項新的研究表明，周末睡懶覺對你的健康并不是一個好主意。以及短文的最后一段，可知，周末睡得太多可能對我們的健康不利。故選B。