Almost every machine with moving parts has wheels, yet no one knows exactly when the first wheel was invented or what it was used for. We do know, however, that they existed over 5,500 years ago in ancient Asia.
The oldest known transport wheel was discovered in 2002 in Slovenia. It is over 5,100 years old. Evidence suggests that wheels for transport didn't become popular for a while, though. This could be because animals did a perfectly good job of carrying farming tools and humans around.
But it could also be because of a difficult situation. While wheels need to roll on smooth surfaces(光滑表面), roads with smooth surfaces weren't going to be built until there was plenty of demand for them. Finally, road surfaces did become smoother, but this difficult situation appeared again a few centuries later. There had been no important changes in wheel and vehicle design before the arrival of moden road design.
In the mid-1700s, a Frenchman came up with a new design of road—a base layer (层) of large stones covered with a thin layer of smaller stones. A Scotsman improved on this design in the 1820s and a strong, lasting road surface became a reality. At around the same lime, metal hubs (the central part of a wheel) came into being, followed by the pneumatic tyre(充气轮胎) in 1846. Alloy(合金) wheels were invented in 1967, sixty years after the appearance of tarmacked roads (柏油路). As wheel design took off, vehicles got faster and faster.
1. What might explain why transport wheels didn't become popular for some time?
A. Few knew how to use transport wheels.
B. Humans carried farming tools just as well.
C. Animals were a good means of transport.
D. The existence(存在)of transport wheels was not known.
2.How is the last paragraph mainly developed?
A. By giving examples.
B. By making comparisons.
C. By giving discussion
D. By making classifications.(分类)
3.What is the passage mainly about?
A. The beginning of road design.
B. The development of transport wheels.
C. The history of public transport.
D. His invention of fast-moving vehicles.
科目:高中英语 来源:2016届黑龙江哈尔滨六中高三下期开学考试英语试卷(解析版) 题型:短文改错
短文改错
假定英语课上老师要求同桌之间交换修改作文,请你修改你同桌写的以下作文。文中共有10处语言错误,每句中最多有两处。错误涉及一个单词的增加、删除或修改。
增加:在缺词处加一个漏字符号(∧),并在其下面写出该加的词。
删除:把多余的词用斜线(\)划掉。
修改:在错的词下划一横线,并在该词下面写出修改后的词。
注意:1. 每处错误及其修改仅限一词。
2. 只允许修改10处,多者(从第11处起)不计分。
Dear Cathy,
I am writing to share my opinion on fashion with you, for I had just heard that you are disappointing because you can’t afford famous brands.
I shall say that it is naturally for people to care about his appearance. And it is true that fashionable thing like clothes and shoes will make one more eye-catching. Therefore, I think it is really a waste of money for you to buy famous brands. Besides, it will also add the burden of your parents.
What’s more, beauty is only skin-deep. There are many things in which can make you popular beside fashion. A great amount of knowledge and a warm heart will surely win others’ respect.
As the saying goes, never judge the person by his appearance. I do hope that you will remember the saying and be as happy as you used to be.
Yours,
Jane
查看答案和解析>>
科目:高中英语 来源:2015-2016学年江苏扬州中学高一下期3月考英语试卷(解析版) 题型:书面表达
书面表达
阅读下面微博上的短文, 然后按要求写一篇150个词左右的英语短文。
Hi, everyone. I am Jane. I have a problem and don’t know what to do. So I need your help!
This morning I was ready to review my lessons with my computer in my dormitory, and then Mary, my roommate and best friend, came back with a laptop. She wanted to use my connector, and I did as she asked.
After a while, she took away my headset and opened her laptop. Afterwards she connected to the Internet with my connector. Then something unexpected happened. She used the audio player with the loudspeaker. She entered her QQ Zone and started using the video system to chat with my microphone. Sounds of music, QQ and their talking became louder and louder. She completely ignored that I was there reviewing my lessons.
I could not bear that, so I asked her to be quiet a little, but I failed. At last I had to go away to the classroom. On the way I became angrier and angrier because she was using my things, but never thought about my feeling. She drove me out. I am very sad. Am I her friend? Should I stop our friendship?
[写作内容]
1. 以约30个词概括上文的主要内容。
2. 以约120个词发表你的看法, 内容包括:
(1)你对Mary的行为的看法, 并说明理由;
(2)假如你是Jane, 你会如何处理这件事;
(3)以你的经历谈谈你和朋友相处的体会。
[写作要求]
1. 作文中可使用自己的亲身经历或虚构的故事, 也可以参照阅读材料的内容但不得直接引用原文中的句子;
2. 文中不能出现真实姓名和学校名称。
[评分标准]
句子结构准确, 信息内容完整, 篇章结构连贯。
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
查看答案和解析>>
科目:高中英语 来源:2015-2016学年江苏扬州中学高一下期3月考英语试卷(解析版) 题型:单项填空
Some school teachers complained, “Many kids haven’t got any hobbies ________ you call playing computer games a hobby. ”
A. unless B. once C. since D. if
查看答案和解析>>
科目:高中英语 来源:2015-2016学年黑龙江大庆铁人中学高一3月考英语试卷(解析版) 题型:短文改错
改错
Time fly like an arrow. I’m already in Senior Grade 3 before I realized it. It will be only a little more than eight months before I graduate middle school. At the present, I’m busy review my lessons in order to take the College Entrance Examination. I hope to go to Beijing University, that is one of the best university not only in China but also in the world. I’ll try my best to turn your dream into reality. Most of my classmates are also studying very hardly to realize their dreams. I do believe everyone will be able to enter an university or college.
查看答案和解析>>
科目:高中英语 来源:2015-2016学年贵州思南中学高二下期第一次月考英语试卷(解析版) 题型:短文改错
短文改错
As we all know , walking is an useful way of exercising and is beneficial to our health. It can not only reduce the risk of many kinds of diseases but also builds up the bones. It’s safe than many other ways of exercising, especially for the elderly and it’s easy to do without consider rules. Beside, walking can also help us lose weight.
What should we pay attention during the walk? First, we should wear loose clothes or good shoes so that we can relax. Second, we should walk fast enough to cause us to breath with difficulty but still be able to talk. Third, that is very important to walk with our arms moving freely. Most important, we should do it every day.
查看答案和解析>>
科目:高中英语 来源:2015-2016学年贵州思南中学高二下期第一次月考英语试卷(解析版) 题型:阅读理解
At the age of 16, Julia Butterfly Hill quit school and worked at a restaurant. For many years, she was only interested in making money and material things. Then one day she had a serious car accident, which changed her life. Hill said: “I realized I wanted to find a more powerful purpose for being here on this planet.”
As soon as she recovered, Hill traveled to California. There she saw ancient redwood trees, which are the largest trees in the whole world. The wood from redwood trunks is very hard. So the Pacific Lumber Company cut down many of the huge redwoods to use for construction. There are not many forests of these trees left. Many environmental activists want to protect the remaining trees. The redwoods are very important to the environment.
In 1997 Hill learned a group called Earth First was working to protect a particular group of trees. They decided to send someone up into a redwood tree, hoping this would stop the company from cutting the trees down. Julia Butterfly Hill volunteered.
Hill lived in the tree for over two years without ever coming down. Her home was a 6-by-8-foot tree house, 180 feet up. It is always cold and wet in a redwood tree. There were even very serious winter storms while Hill was in the tree. The wind and cold almost knocked Hill out of the tree. But she did not fall — she survived.
Finally, after years of arguing, the company decided to protect Luna, the tree Hill lived in. They signed an agreement to never cut down this huge redwood tree or the trees around it. When Hill put her feet on the earth again, she began to cry. But from that moment on Hill hasn’t stopped working to protect the environment.
1.Julia Butterfly Hill traveled to California _____.
A. to find a new job
B. to build a tree house
C. with the hope of joining Earth First
D. in expectation of doing something meaningful
2.The redwood trees were cut down mainly _____.
A. because they might fall over at any time
B. because they had great economic value
C. to protect other trees in the forest
D. to make space for constructions
3.Julia Butterfly Hill’s living conditions in the tree were _____.
A. comfortable B. cool C. tough D. satisfying
4.What can we learn about Julia Butterfly Hill from the text?
A. She has a sense of social responsibility.
B. She failed to protect the redwood tree.
C. She built a new house in the forest.
D. She is a self-centered woman
查看答案和解析>>
科目:高中英语 来源:2016届甘肃嘉峪关市高三第六次模拟考试英语试卷(解析版) 题型:阅读理解
Walk through the Amazon rainforest today and you will find it steamy, warm, damp and thick. But if you had been there around 15,000 years ago, during the last ice age, would it have been the same? For more than 30 years, scientists have been arguing about how rainforests might have reacted to the cold, dry climate of the ice ages, but till now, no one has reached a satisfying answer.
Rainforests like the Amazon are important for mopping up CO2 from the atmosphere and helping to solve global warming. Currently the trees in the Amazon take in around 500 million tons of CO2 each year: equal to the total amount of CO2 given off in the UK each year. But how will the Amazon react to the future climate change? If it gets drier, will it survive and continue to draw down CO2? Scientists hope that they will be able to learn in advance how the rainforest will manage in the future by understanding how rainforests reacted to climate change in the past.
Unfortunately, collecting information is incredibly difficult. To study the past climate, scientists need to look at fossilized pollen(花粉)kept in lake mud, Going back to the last ice age means drilling down into lake sediments(沉淀物), which requires specialized equipment and heavy machinery. There are very few roads and paths, or places to land helicopters and aeroplanes. Rivers tend to be the easiest way to enter the forest, but this still leaves vast areas between the rivers completely unsampled(未取样). So far, only a handful of cores have been drilled that go back to the last ice age and none of them provide enough information to prove how the Amazon forest reacts to climate change.
1.How do scientists study the past climate change?
A. By predicting the climate change in the future.
B. By drilling down deep into land sediments.
C. By analyzing fossilized pollen in lake mud.
D. By taking samples from rivers in the Amazon.
2.Why is it difficult to collect information about the past climate change?
A. Because scientists can't find proper equipment and machinery.
B. Because it is very difficult to obtain complete samples.
C. Because helicopters and aeroplanes have no place to land.
D. Because none of the cores provide any information.
3.Where is the passage most probably taken from?
A. A medical journal. B. A news report
C. A travel brochure. D. A science magazine.
4.The best title for the text may be .
A. Secrets of the Rainforest
B. Climates of the Amazon
C. The History of the Rainforest
D. Changes of the Rainforest
查看答案和解析>>
科目:高中英语 来源:2015-2016学年山东淄博高青县一中高二4月月考英语试卷(解析版) 题型:语法填空
阅读下面材料,在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
There is 1. old Spanish Proverb which states, “Tomorrow is often the 2. (busy) day of the week”. How many 3. (time) have we put off our dreams until tomorrow? I’d say, too many. Our dreams should not, and cannot wait. We have to go for them now! Here are the reasons.
Tomorrow is not promised. Nobody likes to talk about 4. (dead), but the reality is—— 5. is going to die at one point. None of us know the day, or the hour. Therefore, today is all we have. Don’t go to your grave 6. unfulfilled dreams. Make the decision to go after every dream, big or small right now.
You’ll be much 7. (happy) if you go for it. Imagine how much happier you’ll be 8. you’re living the life you always dreamed about. The only thing 9. is stopping you is yourself. Take control of your own happiness. Don’t keep your dreams 10. (wait). Go after them today!
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com