Question

    Beyond its influence on health, not getting enough sleep can lead to car accidents or other mistakes. Here are what sleep researchers have found about how to sleep.

How much sleep do we actually need?

It is known that all of us naturally need no less than eight hours of sleep per night. When we sleep below six hours per 24, we’re at an increased risk of health problems. Some of us think we can make up any of those hours lost during the week on the weekends. Sadly, there is no storage（储存） system for sleep in the brain.

Can we train ourselves to need less sleep?

As a study in 1964, a 17-year-old boy named Randy Garden stayed awake for 264 hours. How many people could do anything close to that without dying?

When you are reading this, you might say you usually get six hours of sleep and feel just fine. Sleep experts often compare people without enough sleep to drunk drivers: They don’t get behind the wheel thinking they’re probably going to kill someone.

Can we drink coffee instead of sleeping?

Coffee can keep us awake. Remember, too much coffee may throw off our sleep and energy cycles. So reduce coffee and avoid caffeine for four to six hours before bedtime.

Does a sense of purpose connect to sleep quality?

A new research suggests a kind of strong connection between purpose in life and sleep. People who have a greater sense of purpose usually have better physical and mental health, which in turn explains their higher-quality sleep. Perhaps developing a sense of purpose in life could be as useful at improving sleep as the healthy habits above.

How to sleep
Introduction	Not getting enough sleep can influence our health and 1. many mistakes.
Findings from sleep researchers	How much sleep do we actually need?	● Eight hours of sleep a night is 2. for all of us. ● Sleeping less than six hours a day can 3.the risk of health problems. ● It is 4. to make up the lost sleeping hours during the workweek.
Can we train ourselves to need less sleep?	●People without enough sleep would insist that they were fine, but weren’t doing well at all.
Can we drink coffee instead of sleeping?	● Using coffee instead of sleeping might lead to sleep  problems. ● Drink proper amount of coffee at proper time.
Does a sense of purpose connect to sleep quality?	● A sense of purpose in life is closely 5. with sleep quality. ● People with a greater sense of purpose may sleep better.

Answer

1.cause

2.necessary

3.increase

4.impossible

5.connected

【解析】

本文介绍主要了睡眠对人很重要，没有足够的睡眠会导致车祸或其他错误。人们至少一天保证八小时睡眠，通过训练或者喝咖啡都不能保证我们的健康，研究表明生活目标和睡眠之间有着强烈的联系。

1.

考查动词。根据第一段“Beyond its influence on health, not getting enough sleep can lead to car accidents or other mistakes除了对健康的影响之外，没有足够的睡眠会导致车祸或其他错误”可知 lead to mistakes可以理解为cause mistakes，can是情态动词，后面加动词原形，故填cause。

2.

考查形容词。根据第三段“It is known that all of us naturally need no less than eight hours of sleep per night众所周知，我们每个人自然每晚需要不少于八小时的睡眠”可知八个小时睡眠是必须的，“nesessary必须的；必要的”符合题意，故填necessary。

3.

考查动词。根据第三段“When we sleep below six hours per 24, we're at an increased risk of health problems当我们每24小时睡眠不足六小时时，我们的健康问题就会增加” at an increased risk of health problems可以理解为increase the risk of health problems ，can是情态动词，后面加动词原形，故填increase。

4.

考查形容词。根据第三段“Some of us think we can make up any of those hours lost during the week on the weekends． Sadly there is no storage system for sleep in the brain我们中的一些人认为我们可以弥补周末一周中失去的任何时间．遗憾的是，大脑中没有睡眠储存系统”可知周末补觉是不可能的，“impossible不可能的”符合题意，故填impossible。

5.

考查动词。根据最后一段“A new research suggests a kind of strong connection between purpose in life and sleep一项新的研究表明，生活与睡眠之间有着强烈的联系”此处是被动语态be connected with，故填connected。