题型:阅读选择 题类:模拟题 难易度:困难
浙江省杭州市2016-2017年英语中考英语模拟试卷(三十二)
Have you ever experienced the feeling of falling as you start to fall asleep? Sometimes you may come to realize this feeling. If so, don't worry. Many people have felt the same thing.
In fact, these muscle twitches (肌肉抽搐) in the arms, legs or other parts of the body are called hypnic jerks (入睡抽动) or sleep starts. And they are very common. Up to 70 percent of people experience them sometimes, Huffington Post reported. But what causes it?
There are some theories(理论). Some scientists believe that the feeling of falling comes from the body relaxing itself, especially if the person is anxious or unable to get comfortable. As you're about to sleep, your muscles become relaxed. But your brain stays awake. It misunderstands the relaxing of your muscles as a sign that you're falling. Then the brain jerks the body awake as if it's trying to protect you.
Other scientists believe that different phases of sleep might cause the hypnic jerks. When we sleep, we experience two phases: non-rapid eye movement (NREM) and rapid eye movement (REM). During REM, our heart rate (心率), breathing and nervous system can act irregularly (不规律地). If the body experiences flashes (一瞬间) of REM while entering sleep, these irregularities could cause twitches.
If you don't want to experience hypnic jerks, scientists have some suggestions. When you become deeply relaxed, you can learn how to reconnect slowly by moving your fingers and toes a little bit. Then start to move your head and open your eyes, while being aware of yourself as you get out of the relaxed state.
But experts agree that hypnic jerks, though sometimes scary, are harmless. If it wakes you up, simply roll over and go back to sleep. But keep in mind: a caffeinated (含咖啡因的) drink, exciting evening activities or stress may make hypnic jerks happen more often.
A If we laid all of the blood vessels (血管) in the human body end to end, they would reach about 100,000km long. That's nearly two and a half times around Earth! |
B For the first time, Coca-Cola has showed that it uses 3,000,000 tons of plastic bottles each year. That's the weight of 15,000 blue whales-the largest animal on Earth. | C If your throat tickles (发痒), pressing your ear might make it go away. That's because your throat and ears share the same group of nerves (神经). When you press your ear, the nerves in your throat can feel it. |
D It takes about 7 to 8 trees to make enough O2 for one person to breathe for a year. Each person needs around 750kg of O2 per year. A large tree might make around 100kg of O2 per year.
| E To young children, a year might seem to last forever. But older people might say that it flies by. Why is that? According to the US scientists, young people's brains deal with information faster than older people. They take in more information and do more things in a day. So they feel like each day lasts longer. However, older people's brains take in less information and see a day pass more quickly.
| F About 200 muscles (肌肉) work together when you take a step. That's a lot of work for your muscles, since many people take about 10,000 steps a day. If you want to get some easy exercise, walking is good for you.
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Friends bring us happiness and hope in our lives. Making friends is a skill and the first thing is to know how to get along with others. If you have trouble making friends, maybe I can tell you how to do it.
Find your own advantages. {#blank#}1{#/blank#} You have our own skills and talents that others don't have. Believe that you are a good person and have something nice to share with others.
Respect(尊重) others. Everyone has his or her own idea. Learn how to listen to others' ideas without trying to make them accept yours. We need to respect each other, because it increases confidence. {#blank#}2{#/blank#}
Be kind. If you are kind to others, they will usually be kind to you. {#blank#}3{#/blank#} For example, saying hello to someone new. Most importantly, give your smile to everyone you meet on the way.
{#blank#}4{#/blank#} Learn to accept what you can't change, and work hard to change what you can. Nobody likes hearing your complaint all the time. If you complain too much, others will leave you.
Never give up. Even if you face some close minded(保守的) people. If you try many times, they may accept you as their friend. And you can try to find someone who will understand you. Believe there are many people who like you.
A. Everyone is special. B. Don't complain too much. C. You should smile to others at any time. D. This helps each other live a better and respectable life. E. There are lots of little things you can do to show your kindness. |
What else can you do to make friends?(不能与文中内容雷同, 不超过15个词) {#blank#}5{#/blank#}
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