7.These days,many of us use computers both at work and at home.We use them to do a number of different things,from typing documents to surfing the Internet and listening to music.However,it is important to remember that using a computer for long hours can cause harm to our bodies.Here are some tips to help keep you healthy when using a computer.
Take care of your back
Make sure your chair is the right height and size for you and the desk you use.Your desk should be at about the same level as your elbows when you are sitting down.Chairs with armrests are good because they allow you to rest your arms.Do not lean forward over the keyboard towards the screen because this is bad for your back.Sit upright,with your feet touching the ground and your back resting on the back of the chair.Doing these things will help you prevent back-related problems such as pain in your neck,shoulders and arms.
Take care of your wrists and hands
Using a keyboard and a mouse can put pressure on your wrists and hands if it is not done properly.When you type,try to make sure your fingers are relaxed.You should hit the keys softly and hold the mouse gently.Mouse mats that come with soft material to support your wrist are really good too.Pain in the hands and wrists is very common among people who use computers a lot,so make sure you use your mouse and keyboard in the right way.
Take care of your eyes
Your eyes are very important and it is necessary to take care of them.You should give them regular breaks from staring at the computer screen.Every fifteen minutes,rest your eye muscles by looking away from the screen at something far away.Make sure that the top of your monitor is at eye level and that your monitor is about an arm's length away from you.
Take a break
It is important that you do not sit at a computer for too long.No matter how busy you are,try to take regular breaks from your desk.Stand up,go for a short walk or even do some stretching exercises.You should take a short break at least once an hour,and you should try to do some stretching exercises every two hours.By following all these tips,you will not feel so tired after using your computer for a long time.
Title:Using computers and staying(71)healthy 
Topic(73)tips
It is important to keep these things in mind because using a computer for long hours can be(72)harmfulto our bodies.Take care of your backChoose a(74)suitablechair for you and your desk.
Do not lean forward over the keyboard towards the screen.
Sit upright(75)with,your feet on the ground and rest your back on the back of the chair.
Take care of your wrists and hands(76)Makeyour fingers relaxed when typing.
Hit the keyboard softly and hold the mouse gently.
Use mouse mats (77)withsoft material to support your wrist.
Take care of your eyesMake sure that the top of your monitor is at eye level and that your monitor is about an arm's length away from you.
Give your eyes regular breaks every(78)fifteen minutes.
Take a breakTake a short break at least(79)once an hour.
Try to do some stretching(80)exercises every two hours.

分析 短文主要講了對(duì)電腦的正常使用,介紹了當(dāng)使用電腦時(shí)保持健康的幾種建議.

解答 71.答案:healthy,根據(jù)句子Here are some tips to help keep you healthy when using a computer可知短文主要是講如何健康地使用電腦,因此stay后接形容詞healthy"健康的".
72.答案:harmful,根據(jù)句子However,it is important to remember that using a computer for long hours can cause harm to our bodies可知使用電腦太久對(duì)我們的身體是有害的,cause harm to=be harmful to"對(duì)…有害",故答案為harmful.
73.答案:tips,根據(jù)表格下面都是對(duì)如何健康使用電腦的建議,故使用名詞tips.
74.答案:suitable,根據(jù)句子Make sure your chair is the right height and size for you and the desk you use可知要選擇合適的椅子,因此使用形容詞suitable.
75.答案:with,根據(jù)句子Sit upright,with your feet touching the ground and your back resting on the back of the chair.可知"坐直,腳碰到地面,背能靠在椅子后背",故答案為with.
76.答案:Make,根據(jù)句子When you type,try to make sure your fingers are relaxed可知打字時(shí)要讓手指放松,根據(jù)下面兩個(gè)句子也是祈使句,因此使用動(dòng)詞原形Make.
77.答案:with,根據(jù)句子Mouse mats that come with soft material to support your wrist are really good too可知由柔軟材料的鼠標(biāo)來(lái)支撐手腕是好的,因此表示"帶有"用介詞with,故答案為with.
78.答案:fifteen,根據(jù)句子Every fifteen minutes,rest your eye muscles by looking away from the screen at something far away可知每隔十五分鐘眼睛就要休息.
79.答案:once,根據(jù)句子You should take a short break at least once an hour可知答案為once.
80.答案:exercises,根據(jù)句子and you should try to do some stretching exercises every two hours可知答案為exercises.

點(diǎn)評(píng) 解答任務(wù)型閱讀理解題,首先對(duì)原文材料迅速瀏覽,掌握全文的主旨大意.因?yàn)殚喿x理解題一般沒(méi)有標(biāo)題,所以,速讀全文,抓住中心主旨很有必要,在速讀的過(guò)程中,應(yīng)盡可能多地捕獲信息材料.其次,細(xì)讀題材,各個(gè)擊破.掌握全文的大意之后,細(xì)細(xì)閱讀每篇材料后的問(wèn)題,弄清每題要求后,帶著問(wèn)題,再回到原文中去尋找、捕獲有關(guān)信息.最后,要善于抓住每段的主題句,閱讀時(shí),要有較強(qiáng)的針對(duì)性.對(duì)于捕獲到的信息,要做認(rèn)真分析,仔細(xì)推敲,理解透徹,只有這樣,針對(duì)題目要求,才能做到穩(wěn)、準(zhǔn).

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目:高中英語(yǔ) 來(lái)源: 題型:短文改錯(cuò)

4.假定英語(yǔ)課上老師要求同桌之間交換修改作文,請(qǐng)你修改你同桌寫的以下作文.文中共有10處語(yǔ)言錯(cuò)誤,每句中最多有兩處.錯(cuò)誤涉及一個(gè)單詞的增加、刪除或修改.
增加:在缺詞處加一個(gè)漏字符號(hào)(∧),并在其下面寫出該加的詞.
刪除:把多余的詞用斜線(\)劃掉.
修改:在錯(cuò)的詞下劃一橫線,并在該詞下面寫出修改后的詞.
注意:1.每處錯(cuò)誤及其修改僅限一詞.
2.只允許修改10處,多者(從第11處起)不計(jì)分.
A few days ago,I went to the railway station to see my friend away.On the way I saw some street cleaners burning garbages.I know they are trying to get rid of rubbish in a way that they thought was"taking a shortcut".I don't think,therefore,it's proper to clear away rubbish by such a means.
Burning things do harm to people.It's known to all that burning rubbish will give off poisonous smoke and dust which in turn will pollute air.Many people catch cancer as result of breathing the polluting air.Some people even die from taking in them.
There are many things in rubbish what can be rotten,such as dry leaves,leftover food,etc.They can make into very good fertilizer.So it's better to collect them for cropland.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解

5.Sports shoes that work out whether their owner has done enough exercise to warrant time in front of the television have been devised in the UK.
The shoes-named Square Eyes-contain an electronic pressure sensor and a tiny computer chip to record how many steps the wearer has taken in a day.A wireless transmitter passes the information to a receiver connected to a television,and this decides how much evening viewing time the wearer deserves,based on the day's efforts.
The design was inspired by a desire to fight against the rapidly ballooning waistlines among British teenagers,says Gillian Swan,who developed Square Eyes as a final year design project at Brunel University to London,UK."We looked at current issues and childhood overweight really stood out,"she says."And I wanted to tackle that with my design."
Once a child has used up their daily allowance gained through exercise,the television automatically switches off.And further time in front of the TV can only be earned through more steps.
Swan calculated how exercise should translate to television time using the recommended daily amounts of both.Health experts suggest that a child take 12,000steps each day and watch no more than two hours of television.So,every 100steps recorded by the Square Eyes shoes equals precisely one minute of TV time.
Existing pedometers(計(jì)步器)normally clip onto a belt or slip into a pocket and keep count of steps by measuring sudden movement.Swan says these can be easily tricked into recording steps through shaking.But her shoe has been built to be harder for lazy teenagers to cheat."It is possible,but it would be a lot of effort,"she says."That was one of my main design considerations."

33.Which of the following is true of Square Eyes shoes?C
A.They contain information of the receiver.
B.They have raised the hot issue of overweight.
C.They regulate a child's evening TV viewing time.
D.They determine a child's daily pocket money.
34.What is stressed by health experts in their suggestion?D
A.The way of changing steps into TV watching time.
B.The exact number of steps to be taken.
C.The precise number of hours spent on TV.
D.The proper amount of daily exercise and TV time.
35.Which of the following would be the best title for the text?B
A.Smart Shoes Stop Childhood Overweight
B.Smart Shoes Decide on Television Time
C.Smart Shoes Guarantee More Exercise
D.Smart Shoes Measure Time of Exercise.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:完形填空

2.On a cold winter morning,an old man sat awkwardly(笨拙地) against a wall at Sydney's Circular Quay station.I glanced for a moment but (41)A him and walked on to my office as I (42)D he was a derelict (流浪漢).
On my way back that afternoon,in the (43)D place I saw an ambulance and the man was being (44)B by two nurses.He wasn't a derelict but a worker,who(45)C fell ill on his way to work.
Shame shocked me when I realized that sick,old man had put up with the (46)B of the entire day.He probably reached out to passers-by for(47)C.No one stopped.No one (48)D.
A different season and I again (49)A an old man half lying on the footpath.Caught up in the (50)C rush of people commuting (乘車上下班),I would have (51)D him quickly as I had done before.However,the (52)B of the old Winter Man forced me to walk to the man on the ground,who was dressed in smart clothes but lifeless,and (53)B down to ask if he was OK.He(54)A consciousness again,and told me he was diabetic (糖尿病) and (55)D me to call an ambulance for him,which I did.
Very weak,he said to me,in a (56)C,"Nobody stopped.Thank you."I looked into his eyes for a moment in (57)C,but much was spoken without a word being said.
As the (58)B ambulance siren(警笛聲) announced the arrival of help,a number of(59)A rushed at me:sadness for the Winter Man and(60)A that I didn't walk past another person in need.I was amazed that it had been so easy to be helpful.
41.A.ignoredB.rememberedC.comfortedD.understood
42.A.a(chǎn)nnouncedB.provedC.expectedD.thought
43.A.firstB.nextC.publicD.same
44.A.watchedB.a(chǎn)ttendedC.supportedD.improved
45.A.nearlyB.finallyC.suddenlyD.immediately
46.A.violenceB.coldnessC.tirednessD.a(chǎn)nger
47.A.safetyB.moneyC.helpD.a(chǎn)ttention
48.A.servedB.likedC.knewD.cared
49.A.came acrossB.gave upC.looked forD.focused on
50.A.frequentB.greatC.usualD.gradual
51.A.greetedB.foundC.followedD.passed
52.A.guidanceB.memoryC.impressionD.comment
53.A.lieB.bendC.holdD.look
54.A.gainedB.returnedC.offeredD.received
55.A.forcedB.a(chǎn)llowedC.encouragedD.a(chǎn)sked
56.A.lossB.hurryC.whisperD.panic
57.A.surpriseB.excitementC.silenceD.pain
58.A.movingB.a(chǎn)pproachingC.droppingD.calming
59.A.emotionsB.dreamsC.plansD.opinions
60.A.reliefB.shockC.luckD.regret.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:完形填空

2.In America,drivers'education is part of the regular high school curriculum.Every student in his or her second year of high school is required to (1)B a class in drivers'education.
However,unlike other (2)D,it is not given during the (3)C school year.Instead it is a summer course.The course is divided up into two parts:class time for learning laws and (4)B and driving time to practice driving.Class time is not unlike any other class.The students have a
text from which they study the basic(5)A they must know to pass the written driving test that is given to anyone wanting to get a driver's (6)C.
Driving time is a chance for the students to get behind the steering wheel and practice start,steering,backing up,parking,switching lanes,turning corners,and all the other operations
(7)C to drive a car.Each student is required to drive a total of six(8)B.The students are divided up into groups of four.The students and the instructor go out driving for two-hour blocks of time.Thus,each student gets half an hour driving time per outing.The instructor and"driver"sit in(9)C  seats and the other three students sit in the back.
Drivers'ED cars are unlike other cars in which they have two sets of brakes,one on driver side and one on the other side where the (10)B sits.Thus,if the student driver should run into(11)A,the instructor can take over.The car also has another (12)D feature.On the top of the car is a sign that(13)A:STUDENT DRIVER.That lets nearby drivers know that they should be especially(14)A  because the student driver is a beginning driver,not very experienced and intended to drive(15)D.

1. A.giveB.takeC.startD.seat
2. A.schoolsB.practicesC.operationsD.courses
3. A.basicB.extraC.regularD.special
4. A.featuresB.regulationsC.operationsD.instructions
5. A.lawsB.skillsC.signsD.parts
6. A.experienceB.educationC.licenseD.curriculum
7. A.separatedB.intendedC.requiredD.mixed
8. A.coursesB.hoursC.testsD.classes
9. A.drivingB.passengerC.frontD.window
10.A.examinerB.instructorC.operatorD.passenger
11.A.difficultiesB.blocksC.outingsD.corners
12.A.basicB.strangeC.similarD.special
13.A.readsB.writesC.warnsD.tells
14.A.cautiousB.considerateC.skillfuD.polite
15.A.quicklyB.regularlyC.practicallyD.slowly

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

12.The official was arrested and received a six year's sentence because ofabuse of power.(濫用職權(quán))

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:填空題

19.Doing morning exercises surely has somebeneficial (有益的) effects on our health.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:信息匹配

16.Maybe you are an average student.(36)EThis is not necessarily so,however.Anyone can become a better s tudent if he or she wants to.Here's how:
Pl an your time carefully.When planning your work,you should make a list of things that you have to do.After making this list,you should make a schedule of your time.First your time for eating,sleeping,dressing,etc.Then decide a good,regular time for studying.(37)BA weekly schedule may not solve all your problems,but it will force you realize what is happening to your time.
Find a good place to study.Loo k around the house for a good study area.Keep this space,which may be a desk or simply a corner of your room,free of everything but study materials.No games,radios,or television.When you sit down to study,concentrate on the subject.
Make good use of your time in class.(38)CListening carefully in class means less work later.Taking notes will help you remember what the teacher says.
Study regularly.When you get home from school,go over your notes,review the important points that your teacher is going to discuss the next day,read that material.(39)GIf you do these things regularly,the material will become more meaningful,and you'll remember it longer.
Develop a good attitude towards tests.The purpose of a test is to show what you have learned about a subject.They help you remember your new knowledge.The world won't end if you don't pass a test,so don't be over worried.
(40)AYou will probably discover many others after you have tried these.

A.There are other methods that might help you with your studying.
B.Don't forget to set aside enough time for entertainment.
C.Take advantage of class time to listen to everything the teacher says.
D.No one can become a top student unless he or she works hard.
E.You probably think you will never be a top student.
F.Ma ke full use of class time to take notes of what the teacher asys in class.
G.This will help you understand the next class.

查看答案和解析>>

科目:高中英語(yǔ) 來(lái)源: 題型:解答題

17.Katia,like many other Russian girls,are nice and lively.

查看答案和解析>>

同步練習(xí)冊(cè)答案