9.Up to 65% of children don't get as much sleep as they should do,and this can make them nervous and slower at school,scientists say.
So how long should young people sleep each night?The answer is between eight and ten hours.If you don't get enough sleep at night,you'll have less energy the next day.
But the scientists say many children have missed out on 4,500 hours of sleep by the time they are seven years old.They say that children miss sleep because they have TVs and computers in their rooms,and busy parents don't read to their younger children at night any more.The traditional"bedtime story"helps children to relax and fall asleep peacefully.Children with TVs and computers in their bedrooms were more likely to sleep badly,and to get less than eight hours'sleep.Even losing one hour's sleep a night can mean that children do less well at school.
German scientists think that your brain (大腦) keeps working while you are asleep.To show that they were right,they gave two groups of people a problem to work out.One group went to sleep,and the other group stayed awake.The result?The people who slept worked out the answer more quickly.
This showed that their brains had been trying to find the answer while the people were asleep.So,make sure you get enough sleep tonight,and you'll be at your best tonight,and you'll be at your best tomorrow!
56.What problem do more than a half of students have?C
A.They don't get on well with their studies.
B.They don't follow their school rules
C.They don't have enough sleep at night.
57.If you have less energy the next day,you'll probably feelBat school.
A.lazy and crazy
B.slow and nervous
C.a(chǎn)lone and angry
58.According to the third paragraph,what has worst influenced many children's sleep?B
A.Bedtime stories.
B.TVs and computers
C.Too much homework
59.The German scientists'experiment showed thatA.
A.our brains work while we sleep
B.our study depends on our sleep
C.our sleep helps improve our health
60.This passage in mainly written forC.
A.scientists
B.parents
C.young students.

分析 文章大意:
本文主要講述的是學(xué)生睡眠和學(xué)校表現(xiàn)之間的關(guān)系.現(xiàn)在,65%的學(xué)生在晚上會(huì)玩電腦、看電視,以至于沒有得到足夠的睡眠時(shí)間,第二天在學(xué)校就會(huì)出現(xiàn)緊張,反應(yīng)慢的問題.同時(shí),科學(xué)家還發(fā)現(xiàn),即使是睡覺的時(shí)候,大腦還是在工作的.由此,科學(xué)家告誡孩子們,一定要保證充足的睡眠.

解答 56.C,推理判斷題,文中提到"Up to 65% of children don't get as much sleep as they should do"65%的學(xué)生睡眠不足,由此確定選擇C.
57.B,推理判斷題,文中提到"this can make them nervous and slower at school"如果睡眠不足,你就會(huì)沒有精神,表現(xiàn)出來就是緊張,并且反應(yīng)比較慢,由此確定選擇B
58.B,推理判斷題,文中提到"They say that children miss sleep because they have TVs and computers in their rooms"影響孩子們睡眠的一個(gè)重要原因就是房子里的電視和電腦,由此確定選擇B.
59.A,推理判斷題,文中提到"German scientists think that your brain (大腦) keeps working while you are asleep"德國科學(xué)家說在睡覺時(shí)大腦還在工作,后面講述了驗(yàn)證這一理論的實(shí)驗(yàn),由此判斷選擇A.
60.C,推理判斷題,文中最后一句話提到"So,make sure you get enough sleep tonight,and you'll be at your best tonight,and you'll be at your best tomorrow!"所以,你要好好睡覺,這樣的話你才能在第二天表現(xiàn)出色,由此確定選擇C.

點(diǎn)評(píng) 對(duì)于閱讀表達(dá)題,一定要記得首先通讀全文,了解文章大意,然后再根據(jù)文章關(guān)鍵詞,關(guān)鍵句,掌握細(xì)節(jié)問題,并進(jìn)行推理判斷,再去回答具體的問題.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:初中英語 來源: 題型:填空題

19.Thereare (be) some vegetables on the table.

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

20.You probably don‘t think about soil often,but the following report may help you learn about science of soil.
What is soil made of?
Soil is made of sediments (沉積物) and humus(腐殖質(zhì)).Sediment is small pieces of rock broken down over time by rain,ice,and wind.Sediment is often found in water.Humus comes from decayed(腐爛的) plants and animals.It helps give plants a lot of the food they need to grow.
How does soil form?
Over centuries,rock breaks down into very small pieces.
The rock pieces mix with humus.
The humus gets thicker and thicker over time.Soil is formed(形成)l
How are soils different?
Soils can be different colors and have different textures(質(zhì)感).Texture is how the surface of an object feels.Color and texture are two features(特征) of soil.
Plants and soil 
Plants do not grow well in some soils.Sandy soi1 is too dry.It does not hold water.Soil with too much clay is too thick.Most plants grow well in dark,rich garden soil that has different sediments and a lot of humus in it.

The title (標(biāo)題):(81)Science of soil

The things in soil

Sediment is often found in water.

Humus  (82)comes from  decayed plants and animals.

The steps of forming

Rock breaks down into very small pieces.

The rock pieces mix with humus.

The humus gets  (83)thicker and thicker.

  (84)The differences between soils   

Soils can be different colors and have different textures.

The relationship between plants and soil

  (85)Dark,rich garden soil   is good for plants to grow in.

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

17.At East China University of Science and Technology,students will get a coupon (優(yōu)惠券) if they eat up their food.Students can collect coupons and exchange them for small gifts,such as books,magazines,mobile phone covers and
hand warmers.
"It's been such a surprise,"said Liang Zhaoyun,19,a student at the university in Shanghai."It has given us one more motivation to finish our food."
     The measure is part of a national"eat-up"campaign(行動(dòng)) which is organized by students to deal with food waste on campuses(校園).
Why only on campuses,you might ask?Because according to a report by Xinhna News Agency,students waste twice as much food as the national average(平均).
The campaign on campus food waste is receiving attention across the country.
"The aim of the campaign is not only to encourage students to finish their food.We hope it can also encourage students to choose a more environment-friendly and healthy lifestyle,"said Tao Siliang,secretary of the Youth League Committee at Shanghai University.
But some school food is poorly prepared,so students do not like to finish it all.Some schools have taken notice of this and they are taking measures to improve it.
"I'm glad that we've reduced food waste since the'eat-up'campaign began.But if we call on students to waste less food,we should also improve the service and food standard on campuses."said Tao.
66.From Paragraph l,we know that the students will get a coupon.C
A.when they eat school food            B.a(chǎn)fter they exchange gifts
C.if they finish all their food          D.if they collect the waste
67.The underlined word"motivation"in Paragraph 2meansA in Chinese.
A.動(dòng)力        B.機(jī)會(huì)        C.試驗(yàn)       D.條件
68.The"eat-up"campaign is carried out on campuses becauseC
A.students get a good education          B.schools offer small gifts
C.students waste too much food           D.school food is more delicious
69.The purpose of the campaign is mainly toB.
A.improve the school food standard
B.encourage a greener and healthier lifestyle
C.receive attention from the society
D.further improve the service in universities
70.The best title for this passage may beD.
A.Enjoy Your Food!B.Reduce Waste on Campus
C.Meals in Universities.D."Eat-up"Campaign on Campus.

查看答案和解析>>

科目:初中英語 來源: 題型:選擇題

4.-Do you like this cotton shirt?
-Yes,it ________ nice and soft.(  )
A.is feltB.is feelingC.feelD.feels

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

5.閱讀下面短文,從中為71-72題中的四種現(xiàn)象找到相應(yīng)的環(huán)保建議,并完成75題.答題均寫在對(duì)應(yīng)題號(hào)的橫線上.
Things You Can Do to Help the Environment
CARS
 Cars are getting bigger.Bigger cars burn more gas and increase problems with air pollution.So try to walk,ride,or take buses or subways.And if you drive a car,keep it in a good state.This can save gas and make less pollution.
Energy
The biggest use of home energy is for heating and cooling.So turn up your air conditioned and,um down the heat,especially at night.Use energy-saving lights.And remember to turn lights off.
PRODUCTS
Each American throws away 10 kilograms of litter everyday.Try to make less waste.Ask yourself before you buy something:Do I need it?Buy products that you can use over and over again.
WATER
Showers use a lot of water.In one week,a common American family uses as much water as a person drinks in three years!Take shorter showers or buy a special small showerhead.This can cut water use in half.
 
71.Linda always takes long showers in the morning.
Take shorter showers or buy a special small showerhead.
72.Jeff leaves the lights on at home all the time.
Remember to turn lights off.
73.Nick buys a newspaper every day,but never reads it.
Try to make less waste.
74.Gina drives to work,but her office is near her home.
Try to walk,ride or take buses or subways.
75.This passage is most probably taken fromA
A.a(chǎn) magazine    B.a(chǎn) news report     C.a(chǎn) diary.

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

12.
The Advantages of Eating Fruits & Vegetables
Vegetables and fruit are good for your health because of a lot of vitamins(維他命),nutrients(礦物質(zhì)) and fiber(纖維) in them.Fruits and vegetables are regarded as a healthy diet without adding chemicals or additives(添加劑) for  carrying or storing foods.The United States Department of Agriculture sugests eating prenty of fruits and vegetables every day to get the advantages of eating a healthy diet.
Disease Prevention
The United States Department of Agriculture tells that eating fruits and vegetables helps fight strokes,cardiovascular disease and type 2diabetes.Because of the potassium in fruits and vegetables,they can prevent the risk of developing kidney stones.The fiber in fruits and vegetables helps the body fight against coronary heart disease.
Idea Health
Since fruits and vegetables add to a balanced and healthy diet,eating these will help you with your idea.The vitamins in fruits and vegetables helps fight depress(沮喪),according to the Mental Health Foundation.Vitamin B and folic acid found in some vegetables and bananas help relax yourslves.Eating fruits and vegetables can also help improve memory.
Healthy Weight
Eating fruits and vegetables helps you have a healthy weight.Fruits and vegetables naturally include less engry than other foods,according to the Center for Disease Control and Prevention.The fiber and water in the fruits and vegetables make you feel that you are full,so you will not feel that you have to eat more food.
51.According to the passage,how many things are included in the vegetables and fruit?D.
A.3            B.4           C.5               D.6
52.What kind of fruit should you eat if you were stressed out?C.
A.Vitamin B    B.folic acid     C.banana           D.a(chǎn)pple
53.Which of the following is not disease?
A.potassium    B.strokes       C.cardiovascular     D.type 2diabetes
54.The United States Department of Agriculture suggests thatB.
A.eating prenty of fruits and vegetables every day instead of having food.
B.eating prenty of fruits and vegetables is good for helping fight disease
C.eating some vegetables and bananas help relax yourslves.
D.eating fruits and vegetables helps you have a healthy weight.
55.According to the passage,eating plenty ot vegetables and fruit can'tD.
A.prevent disease                         B.improve memory
C.helps you have a healthy weight.D.let you want to eat more food.

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

9.What will the house of the future look like?Could it have gardens on its walls,or a pool with fish for dinner?Architects believe that they are all possibilities.The only thing for sure is that the houses will be as green as possible.
The tree house
  Many architects in the world would like to build a"tree house."Like a leaf,the surface of the house collects sunlight during the day.The energy can be used to heat water,produce electricity,and even create fresh air for the home.The"root"(根) of the house is deep under the ground.It uses the soil (土壤) to the home's temperature.
The Lizard house
   Like a lizard (蜥蜴),changing color with the weather is the most important design of a lizard house.When it's in the bright sun,the cover of the house will turn dark to protect it from strong heat.During dark days,it turns white and takes in as much light and heat as possible to produce energy.
Meals at home
  This design is perhaps as much about the future of food production as architecture (建筑風(fēng)格).It has gardens on the outside wall of the house.People can plant tomatoes,carrots and green tea on them.So every day in the morning,you just need to walk outside and collect your meals.
Learning from the past
   Looking to the future isn't the only way to be green.Sometimes,ancient techniques (古老的技術(shù)) can also help cut down energy use.For example,a chimney (煙囪) can be a useful air conditioner because it is easier of hot air to flow out at the chimney.

40.What is the best title (標(biāo)題) of the passage?A
A.Green house of the future.
b.The greener,the better.
C.How to build green houses.
D.Changes of the houses.
41.We can heat water,produce electricity or create fresh air for the homeB.
A.with the root of a leaf.
B.with the energy from sunlight.
C.with the soil under the ground
D.with gardens on its walls.
42.What will happen to the cover of the lizard house when it's in the bright sun?C
A.It will take in light.
b.It will produce energy.
C.It will turn dark.
D.It will turn white.
43.The passage seems to tell us that meals at home in the futureD.
A.will be more delicious.
b.need more cooks.
C.cost as much as possible.
D.will be greener.
44.A chimney can be a useful air conditioner but it used to causeA.
A.pollution.b.a(chǎn)ccident.C.noise.D.techniques.

查看答案和解析>>

科目:初中英語 來源: 題型:閱讀理解

10.A clean and healthy environment is part of wealth of life.So it's necessary to learn about protecting environment.Here are 5steps we must go.
1.If you want to reduce waste,you should use things wisely.A large number of trees are being cut down to make paper.If everyone uses paper carelessly and throw it out,soon we would not have any trees left.Other things are also being wasted,and people don't know what to do with the waste in big cities.So we should reduce the waste.
2.You should always think of reusing the usable things before throwing them out.Give your clothes you do not use or the ones which are too small to the poor people.In a family,you may pass on such clothes to younger brothers or sisters.
3.Bottles,cans and paper can easily be recycled.By doing so we save lots of time and money.For example,coke cans are sent to a factory,where they are smashed(壓) flat and melted(熔化) and the metal thing are made for new coke cans.
4.When you buy a box of apples,there may be a few rotten ( 腐爛的) apples,you have two choices:one is to throw the whole apples away,or you could cut off the rotten parts and use the good parts.In the way,you are recovering(挽回) the eatable parts of food.
5.If one of the legs of your table is broken,you can repair it.If you want to change the better ones,it's better for you to sell the old things or give them to other people who can use them after doing some repair.
The above steps we are talking about refer to the environmental problems.We should try our best to change our ways of life.If we try to protect the environment,the life will be improved much and the world will become better.

71.The first step asks usD.
A.to cut down many trees to make paper
B.to use paper carelessly and throw it out
C.to tell people how to do with waste in big cities
D.to reduce the waste and use things wisely
72.Can you guess the meaning of the underline word"usable"in paragraph 3?C
A.有益的
B.不適用的
C.可用的
D.多能的
73.What's the right order of recycling coke cans?B
a.make the metal things into new coke cans; 
b.melt them;
c.smash them;                           
d.send them to a factory;
A.a(chǎn),b,c,d
B.d,c,b,a
C.d,b,c,a
D.c,a,b,d
74.The main idea of step 4in this passage isB.
A.to throw waste things away
B.to get back the useful parts
C.to cover waste things with earth
D.to throw the whole things away
75.Which is the wrong way to do with your broken tables?A
A.Throwing them away.
B.Repairing them.
C.Selling them.
D.Giving to others.

查看答案和解析>>

同步練習(xí)冊(cè)答案