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Why would human beings waste a third of their lives sleeping when they could be doing more important things like looking after their families or working？Some scientists believe sleeping helps recharge the body.while others think it is important for strengthening newly formed memories.Now，there is new evidence which suggests that the purpose of sleep may be to forget some of the millions of new things we learn each day.
    The neurons in the human brain consist of fibers called dendrites （樹突）.These grow as we learn new things and connect the brain's cells to each other at contact points called synapses （突觸）.The larger the dendrites become and the more cells they connect，the more information we store.
    In 2018.Giulio Tononi and Chiara Cirelli，both biologists at the University of Wisconsin Madison，suggested a new idea：The things our brains learn each day result in so many synapses that things start to get a little messy.Sleeping allows us to sort through （整理） the "noise" and dispense all the unnecessary information.leaving behind only the most important memories.
    Recently，the university's research has provided direct evidence to support the theory.The experiment involved analyzing 6.920 synapses in the brain shavings from two groups of mice over a four-year period：one group had been allowed to sleep，while the other had been kept awake and entertained with toys.The researchers discovered that the brain shavings of the sleeping mice had nearly 20 percent fewer synapses than those that had been kept awake and entertained.
    It was also evident during the study that the brain does not shave every synapse.20% of neurons remained unchanged：these were most likely well established memories.Therefore.although we may be sleeping to forget some of what we've learned，the brain "forgets" in a smart way.
    Most researchers believe clearing our brains is not the only purpose of sleep.
    Resting our minds and bodies has also been found to help with other biological functions like strengthening our immunity.Though scientists may never agree on a single reason.they are all sure of one thing — a good night's rest is essential for our health.So try and spend at least a third of your day sleeping!

（1）What's the purpose of sleeping according to the new discovery？（no more than 15 words）
To forget some of the millions of new things we learn each day.
To forget some of the millions of new things we learn each day.

（2）What's the main idea of Paragraph 2？（no more than 10 words）
How the neurons in the human brain help store information
How the neurons in the human brain help store information

（3）What does the underlined word "dispense" in Paragraph 3 probably mean？（no more than 5 words）
Get rid of. / Do away with. / Take out. / Remove.
Get rid of. / Do away with. / Take out. / Remove.

（4）What agreement do all the scientists probably reach about sleeping according to the text？（no more than 10 words）
A good night's rest is essential for our health.
A good night's rest is essential for our health.

（5）Do you think a good night's sleep will benefit your next-day study？Please explain in your own words. （no more than 20 words）
Yes.Because it helps us discard all the unnecessary information and leave only the most important memories.
Yes.Because it helps us discard all the unnecessary information and leave only the most important memories.

【考點(diǎn)】健康；說明文．

【答案】To forget some of the millions of new things we learn each day.；How the neurons in the human brain help store information；Get rid of. / Do away with. / Take out. / Remove.；A good night's rest is essential for our health.；Yes.Because it helps us discard all the unnecessary information and leave only the most important memories.

【解答】

【點(diǎn)評】

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發(fā)布：2024/4/20 14:35:0組卷：8引用：2難度：0.4

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1．Is there anything more important than health？I don't think so. "（1）

" wise people say.
   If you have a headache，toothache，backache，or bad pain in the stomach，if you complain（抱怨） of a bad cough，or if you suffer from high or low blood pressure，I think you go to the doctor.
   The doctor will examine your throat（喉嚨），test your blood pressure，take your temperature，sound your heart and lungs，check your teeth or have your chest X-rayed.（2）

The only thing you have to do is follow his advice.
   （3）

An old gentleman came to see the doctor.The man was very ill.He told the doctor about his weakness，memory loss and serious problems with his heart and lungs.The doctor examined him and said there was no medicine for his disease.He told his patient to go to a quiet place for a month and have a good rest.（4）

In other words，the doctor advised him to follow the rule：" Eat at pleasure，drink at pleasure and enjoy life as it is." The doctor also said that if the man wanted to be well again，he shouldn't smoke more than one cigarette a day.
   A month later the gentleman came into the doctor's office.（5）

He thanked the doctor and said that he had never felt a healthier man.
   "But you know，doctor" he said，" it's not easy to begin smoking at my age."

A.He also advised him to eat a lot of meat，drink two glasses of red wine every day and take long walks.
B.You can't be good at your studies or work well when you are ill.
C.After that he will advise some treatment or some medicine.
D.Health is the greatest wealth.
E.He looked cheerful and happy.
F.He was more worried about his illness.
G.Speaking about doctor's advice，I can't help telling you a funny story
發(fā)布：2024/11/1 21:30:2組卷：35引用：4難度：0.6
解析
2．Many people believe that there is some truth in the saying Laughter is the best medicine．（1）

Laughter helps relieve pain，strengthen the immune system and reduce stress．Laughter stimulates（激發(fā)） hormones which make us feel happy．Laughter also increases the flow of blood throughout the body and has benefits which are similar to the ones you get by doing exercise．
   （2）

Children exposed to funny films and cartoons before major medical procedures are able to cope better with pain and anxiety．（3）

These are professional clowns who are sent to hospitals and wards to entertain and distract sick children．
   Laughter therapy has become very popular in recent years and as a result，more and more laughter clubs are starting to open up in cities and towns all over the world．At a laughter session，a trained therapist instructs the group to perform a series of exercises which are designed to produce laughter．（4）

And it takes them some time to get rid of their inhibitions（心理抑制）．They might even start off with fake laughter，but this doesn't matter because our bodies can't tell the difference，and the results are the same．Moreover，laughter is contagious（傳染的）．（5）

   So next time you feel ill，stressed out or depressed，try watching a funny film or try remembering an amusing incident in your life．You will soon feel better．

A．If one person starts giggling，it is unavoidable that everyone else will be drawn in．
B．Laughter helps you focus．
C．This finding has led to so-called clown doctors．
D．In fact，research done by scientists has shown that laughter has a lot of health benefits．
E．Laughter makes the world a better and more colorful place．
F．Some people may find the idea embarrassing at first．
G．Using laughter therapy in children's hospitals has proven to be invaluable．
發(fā)布：2024/10/21 14:0:2組卷：12引用：2難度：0.5
解析
3．If you are already making the time to exercise，it is good indeed!With such busy lives，it can be hard to try and find the time to work out. （1）

.Working out in the morning provides additional benefits beyond being physically fit.
   ●Your productivity is improved.Exercising makes you more awake and ready to handle whatever is ahead of you for the day. （2）

.
   ●Your metabolism （新陳代謝） gets a head start. （3）

.If you work out in the mornings，then you will be getting the calorie （卡路里） burning benefits for the whole day，not in your sleep.
   ●（4）

.Studies found that people who woke up early for exercise slept better than those who exercised in the evening.Exercise energizes you，so it is more difficult to relax and have a peaceful sleep when you are very excited.
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.If you work out bright and early in the morning，you will be more likely to stick to healthy food choices throughout the day.Who would want to ruin their good workout by eating junk food？You will want to continue to focus on positive choices.
   There are a lot of benefits to working out，especially in the mornings.Set your alarm clock an hour early and push yourself to work out!You will feel energized all day long.

A.You will stick to your diet.
B.Your quality of sleep improves.
C.You prefer healthy food to fast food.
D.There is no reason you should exercise in the morning.
E.You can keep your head clear for 4-10 hours after exercise.
F.After you exercise，you continue to burn calories throughout the day.
G.If you are planning to do exercise regularly，or you're doing it now，then listen up!
發(fā)布：2024/10/28 17:30:2組卷：38引用：2難度：0.5
解析

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