Question

英语七选五we spend about one-third of our lives sle

ping

Answer 1

全文如下，答案应该就在里面。你看看：
Sleep is an important part of our lives. We spend about one-third of our lives sleeping. For millions of people, however, getting enough sleep is a continuing struggle. A recent study found that thirty-five percent of Americans have difficulty going to sleep or staying asleep. The problem is called insomnia(失眠). Insomnia exists when a person is not able to get the amount of sleep needed to operate effectively. Insomnia is not measured in numbers of hours of sleep. This is because different people need different amounts of sleep to feel rested. The most common problems resulting from insomnia are sleepiness and trouble in completing work. Other problems are emotional disorders and difficulty in thinking. The treatments for insomnia were discussed at a recent meeting of the Association of Professional Sleep Societies. The group’s sleep experts say there are three kinks of insomnia. One kind is called transient(短暂的) insomnia. It lasts just a few days. It is a result of moderate tension. The tension can be caused by a long airplane flight or a brief stay in a hospital. Another kind is called shot-term insomnia. It lasts several weeks and results from more serious tension. The tension may be caused by problems at work or at home, a major sickness or the death of a loved one. The third kind of insomnia is called long-term. It lasts longer than several weeks. It often is a sign of severe physical or emotional problems. Sleep experts say anyone with long-term insomnia should be examined so the cause can be found and treated.
Many things we eat or drink can affect our sleep. Drinks containing alcohol or caffeine (咖啡因) can block sleep. So can some medicines. Other causes of insomnia include breathing problems or sudden, uncontrolled body movements during sleep. Because insomnia has so many causes. Not all treatments work for everyone. But experts have offered some simple ideas that work for most people. If unable to sleep, they say, get up and go to another room, if possible. Stay up until you are really sleepy, then return to bed. Get up at the same time every day. Do not exercise just before going to bed. And, do not worry about past problems or future plans.

Answer 2

我们三分之一的时间都在睡觉。