When you think of all the ways your body can get hurt---falling off a bike, stepping on a nail, being bitten by a crazed dog---the aches and pains that come from sitting at a computer may not seem like much.
But more doctors are getting worried about just that. If you sit at a PC the wrong way, the nerves and muscles in your back, neck and arms can get out of line.
Ergonomics is the study of how people work and how jobs and equipment can be designed so that people are safer and more comfortable in the things they do---whether that’s working on a factory assembly line or sitting in front of a computer.
The monitor
You should not have to tilt(傾斜) your neck up or down to lock at the screen. Your eyes should be level with the top of the screen.
How far away should you sit? Reach your arm out so your fingertips just touch the screen.
The keyboard
It should be directly in front of you. Don’t unfold the legs on the bottom of the keyboard so that it tilts up toward you---it should be as flat as possible, or even tilted away from you. You want your wrists “neutral,” which means straight, not bent. This puts less strain on your nerves and muscles.
Arms should be close to the body. Don’t look at your fingers as you type. Use a document holder to hold papers at the same level as the monitor. Keep the mouse on the same level as the keyboard and close by--- so you don’t have to reach for it.
The chair
Your feet shouldn’t dangle---the blood will pool in your feet. They should rest flat on the floor, or on phone books, if necessary. Your back needs support. Roll up a towel and stick it there.
The Body
If you think of your body as a collection of right angles when you sit at a computer, you should be just fine.
Your hips should be at a 90-degree angle to your back. That takes the pressure off the spine. And your knees should bend at a 90 degree angle so your feet are flat.
【小題1】The passage mainly talks about .
A.a(chǎn)voiding pains caused by using PC | B.the science of ergonomics |
C.illness caused by a computer | D.how to keep fit |
A.管理學 | B.人機工程學 | C.機械工程學 | D.經(jīng)濟學 |
A.As high as your arms. |
B.A little higher than your eyes. |
C.A little lower than your eyes. |
D.At the same level as your eyes. |
A.Tilting away from you. | B.Tilting up toward you. |
C.Flat. | D.Not mentioned. |
A.Rest them on a phone book. | B.Rest them on the floor. |
C.They should rest flat. | D.They should dangle. |
【小題1】A
【小題2】B
【小題3】D
【小題4】B
【小題5】C
解析試題分析:本文講述的是一些關于在使用電腦的時候任何保護好自己身體的建議。
【小題1】A 主旨大意題。本文講述的是一些關于在使用電腦的時候任何保護好自己身體的建議,故A項正確。
【小題2】B 推理題。根據(jù)本句Ergonomics is the study of how people work and how jobs and equipment can be designed so that people are safer and more comfortable in the things they do---whether that’s working on a factory assembly line or sitting in front of a computer.說明該詞是指學習在工作或者學習中如何讓人們舒服安全。故應該是人體工程學的內容,B正確。
【小題3】D 細節(jié)題。根據(jù)You should not have to tilt(傾斜) your neck up or down to lock at the screen. Your eyes should be level with the top of the screen.說明顯示器要和你的眼睛同樣水平的高度,故D正確。
【小題4】B 細節(jié)題。根據(jù)Don’t unfold the legs on the bottom of the keyboard so that it tilts up toward you---it should be as flat as possible, or even tilted away from you.說明B項的內容符合句意。
【小題5】C 細節(jié)題。根據(jù)Your feet shouldn’t dangle---the blood will pool in your feet. They should rest flat on the floor, or on phone books說明要讓我們的腳在地上得到休息,故C項正確。
考點:考查教育類短文
點評:本文考查直接細節(jié)題很多,對此類題型?考生可以首先從問題中找到關鍵詞?然后以此為線索?運用略讀及查閱的技巧在文中迅速尋找這一細節(jié)?找到后再把這一部分內容仔細閱讀一遍?仔細比較所給選項與文中細節(jié)的細微區(qū)別?在準確理解細節(jié)的前提下?最后確定最佳答案。
科目:高中英語 來源: 題型:閱讀理解
完形填空 (共20小題;每小題1.5分,滿分30分)
閱讀下面短文,掌握其大意,然后從短文后所給各題的四個選項(A、B、C和D)中,選出可以填入空白處的最佳選項,并在答題卡上將該項涂黑
There was a stranger at my doorstep this morning. I was a little __36__ at first because my parents warned me not to talk to strangers, __37__ he seemed to be a fellow student in my college so I began to calm down soon after.
__38__ in old but neatly pressed clothes, the tall boy began explaining his __39__. He told me about his school fees and said that the time __40__ his exam was approaching. Though his grades were excellent, he would not be __41__ to take his exams if he failed to __42__ the money for all of the tuition fees. He was studying Computer Applications in my city. __43__ I had friends studying the same course in my college, __44__ meant that I could ask them all about him.
The boy was still $ 2,500 short of the $ 30,000 that his tuition __45__. He was having a hard time, and he had a bad family situation __46__. I didn’t have much money, so I gave him an __47__ foreign book on computer languages. I thought that he __48__ could not afford such a textbook. I also remembered that I had won $ 500 in a contest. I __49__ the entire $ 500 to my newly made friend and __50__ him good luck with his exams.
When you are in college, __51__ is very important __52__ to buy new textbooks or to hang out with friends. When I saw this fellow, I was __53__ of my other friends, many of whom were excellent, but were __54__ to pay for their education. This replaced all the hesitation and __55__ in my mind with generosity.
Since then, I have never wasted even a single coin on anything that I don’t need.
36.A.a(chǎn)mused B.interested C.scared D.satisfied
37.A.but B.therefore C.besides D.now that k+s-5#u
38.A.Dressing B.Dressed C.To dress D.To be dressed
39.A.question B.study C.a(chǎn)im D.problem
40.A.of B.in C.for D.to
41.A.suggested B.a(chǎn)llowed C.a(chǎn)sked D.required
42.A.catch hold of B.come up with C.make up for D.take possession of
43.A.Fortunately B.Simply C.Sometimes D.Quickly
44.A.where B.what C.that D.which
45.A.used B.needed C.cost D.took
46.A.a(chǎn)s usual B.a(chǎn)s well C.a(chǎn)s yet D.a(chǎn)s a whole
47.A.informal B.ordinary C.extra D.expensive
48.A.surely B.finally C.probably D.regularly
49.A.handed in B.handed over C.handed down D.handed out
50.A.wished B.hoped C.wanted D.told
51.A.friendship B.luck C.money D.health
52.A.whether B.how C.if D while
53.A.charged B.a(chǎn)ccused C.warned D.reminded
54.A.struggling B.studying C.willing D.unwilling k+s-5#u
55.A.excitement B.doubt C.belief D.faith
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When you are little,the whole world feels like a big playground.I was living in Conyers,Georgia the summer it all happened.I was a second grader,but my best friend Stephanie was only in the first grade.Both of our parents were at work and most of the time they let us go our own way.
It was a hot afternoon and we decided to have an adventure in Stephanie's basement.As I opened the basement door,before us lay the biggest room,full of amazing things like guns,dolls,and old clothes.I ran downstairs,and spotted a red steel can.It was paint.I looked beyond it and there lay even more paint in bright colors like purple,orange,blue and green.
“Stephanie,I just found us a project for the day.Get some paintbrushes.We are fixing to paint.”She screamed with excitement as I told her of my secret plans and immediately we got to work.We gathered all the brushes we could find and moved all of our materials to my yard.There on the road in front of my house,we painted big stripes(條紋)of colors across the pavement(人行道).Stripe by stripe,our colors turned into a beautiful rainbow.It was fantastic!
The sun was starting to sink.I saw a car in the distance and jumped up as I recognized the car.It was my mother.I couldn't wait to show her my masterpiece.The car pulled slowly into the driveway and from the look on my mother's face,I could tell that I was in deep trouble.
My mother shut the car door and walked towards me.Her eyes glaring,she shouted,“What in the world were you thinking?I understood when you made castles out of leaves,and climbed the neighbors' trees,but this!Come inside right now!”I stood there glaring back at her for a minute,angry because she had insulted(侮辱)my art.
“Now go clean it up!”Mother and I began cleaning the road.Tears ran down my cheeks as I saw my beautiful rainbow turn into black cement.
Though years have now passed,I still wonder where my rainbow has gone.I wonder if,maybe when I get older,I can find my rainbow and never have to brush it away.I guess we all need some sort of rainbow to brighten our lives from time to time and to keep our hopes and dreams colorful.
56.What did the writer want to do when his mother came home?
A.To introduce Stephanie to her.
B.To prevent her from seeing his painting.
C.To put the materials back in the yard.
D.To show his artwork to her.
57.In his mother's eyes,the writer________.
A.was a born artist B.a(chǎn)lways caused trouble
C.was a problem solver D.worked very hard
58.The underlined word“rainbow”in the last paragraph refers to______.
A.the rainbow in the sky
B.the stripes on the pavement
C.something imaginative and fun
D.important lessons learned in childhood
59.It can be learned from the passage that parents should______.
A.encourage children to paint
B.value friendship among children
C.discover the hidden talent in children
D.protect rather than destroy children's dreams
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科目:高中英語 來源: 題型:閱讀理解
Today's teens have a knowledge of the Internet that often surpasses that of their parents. Because so many teens are Internet survey, it is important that they also have an understanding of the dangers that exist online and how to deal with them. Watch teens share their own“RealLife Stories” about issues affecting them on the Internet such as cyberbullying(網(wǎng)絡欺凌), online enticement, and giving out too much personal information.
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Some teens say and do terrible things to each other online because they don't see the direct effects of their actions. So what should you do if you're cyberbullied? Watch the NSTeens in their latest video, “Terrible Text”, about a young girl who is troubled when a cyberbully sends mean text messages to her cellphone at all hours of the day and night. Visit NSTeens. org. |
NetSmartz411 |
NetSmartz411 is a parent and guardian's premier online resource for learning about the Internet safety,computers, and the Web. Search our knowledge base for answers to all of your questions about the online world! If you can't find what you're looking for, use the“Ask the Experts”tab to send us a question. Your question will be answered by professionals who know a lot about the Internet safety—the reallife analysts at the National Center for Missing & Exploited Children. We handle daily reports about the online exploitation of children;and we'll show you the steps you can take to keep the children and teens in your life safer online. Visit NetSmartz411. org. |
CyberTipline Report |
The CyberTipline is the place to report any incident of the Internet exploitation. If you find yourself in a situation where you need help,visit www.cybertipline.com and make a report. If you fear that you are in immediate danger,contact your local law enforcement (執(zhí)法部門). |
RealLife Stories |
Watch real life stories told by teens who have been victims of the Internet exploitation. RealLife Stories |
NetSmartzKids |
Are you concerned about your younger siblings'(兄弟姐妹的) safety online? Visit www.NetSmartzKids.org with them to help them learn how to avoid the dangers that exist on the Internet. |
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A. kids loving to play games online
B. only victims of the Internet use
C. kids and their parents who want to learn about the safety online
D. preschool students who know little about the Internet
57.If you visit the website,you can________.
A. share your friends'“ RealLife Stories” about issues affecting them on the Internet
B. have an understanding of the dangers that exist online and how to deal with them
C. say and do terrible things to each other online
D. ask for help when you have difficulty with your study
58.If you visit www.cybertipline.com,you can ________.
A. contact your local law enforcement
B. search our knowledge base for answers to all of your questions about the online world
C. report any incident of the Internet use
D. help your siblings learn how to avoid the dangers that exist on the Internet
59.Which of the following stories you can share on the Real Life Stories?
A. A teen was murdered by the man she met in a chat room.
B. Problems of losing weight.
C. Left home alone.
D. Hurt by secondhand smoke in the Internet cafe.
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科目:高中英語 來源:2011屆安徽省百校論壇高三第一次聯(lián)合考試英語卷 題型:完型填空
閱讀下面短文,從短文后各題所給的四個選項(A、B、C和D)中,選出可以填入空白處的最佳選項,并在答題卡上將該項涂黑。
"A parcel arrived for you today," my father told me, as we were driving home from work."It's quite big." "Oh, really?" I wondered out loud."Have you 36 anything? Maybe from Amazon or eBay or something…?" my father continued."No, Dad.I'm 37 only one thing, but that should arrive in a(n) 38 ."
On Sunday, I will participate in a(n) 39 activity with some friends,' and.I had asked Bluebell if she could send me some of her homemade smile cards to 40 on the day.Since smile cards would have fit into an envelope,'! couldn't imagine what else could be in the 41 I became increasingly 42 as we continued to drive home.As soon as we arrived, I 43 to open the package.It had a neat, hand-written label (標簽)on it."There might be something easy to 44 inside," my father said, as he handed me some scissors."Be careful when you open it."
The package was filled with all sorts of kindness 45 I First, some beautiful colorful posters with kindness ideas and 46 fell onto the floor.There were also loads of wrist bands (護腕), which I will 47 at our kindness activity. 48 , there were three envelopes in the package——two of them had the most cleanly and neatly 49 smile cards, and the third had a wonderful card inside, which 50 , "Thank you very much for your kindness...loads of love, Bluebell."
"This is really 51 ," my father said.My mother and sister enjoyed the package as well.Bluebell put .the biggest 52 on all of our faces! When I had asked her for some of her homemade smile cards to 53 some kindness during our activity, I never expected to 54 such a wonderful package filled with all sorts of kindness and inspiration!
You have 55 made my day.Bluebell!
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科目:高中英語 來源:2012-2013學年廣東省珠海市高一上學期期末質檢英語試卷(帶解析) 題型:完型填空
The first day of university our professor introduced himself and challenged us to get to know someone we didn’t already know. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a 11 ,little old lady beaming up at me with a smile that 12 her entire being.
She said, “Hi, handsome. My name is Rose. I’m eighty-seven years old. Can I give you a hug?” I laughed and enthusiastically 13 , “Of course you may!” and she gave me a giant 14 . “Why are you in college at such a young, innocent age?” I asked.
She 15 replied, “I’m here to meet a rich husband, get married, and have a couple of kids…”
“No seriously,” I asked. I was 16 what may have motivated her to be taking on this 17 at her age.
“I always dreamed of having a 18 and now I’m getting one!” she told me.
Over the course of the year, Rose became a campus icon and she 19 made friends wherever she went. She loved to dress up and she enjoyed the attention bestowed upon her from the other 20 . She was living it up.
At the end of the semester we invited Rose to speak at our football banquet. I’ll never forget what she taught us. “We do not stop playing because we are old; we grow 21 because we stop playing.
There are only four 22 to staying young, being happy and achieving success. You have to laugh and find humor every day. You’ve got to have a dream. When you lose your 23 ,you die.
Anybody can grow older. That doesn’t take any talent or 24 . The idea is to grow up by always finding opportunity in 25 . Have no regrets.”
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