欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

　　Sometimes, no one may really know ___3___ a word comes from. Did you ever think about why hamburgers are called hamburgers, especially when they are not made with ham? About a hundred years ago, some men went to America ___4___ Europe. They came from a big city in Germany called Hamburg. They didn't ___5___ good English, but they ate good food. When some Americans saw them ___6___ a round piece of beef, they asked the Germans what it was. The Germans didn't ___7___ the question and answered,“We come from Hamburg,”One of these ___8___ owned a restaurant. He had an idea. He cooked some round pieces bread and started selling them. Such bread came to be“hamburgers”. Today,“hamburgers”are sold in ___9___ countries around the world.

　　Many English ___3___ come from Latin（拉丁語(yǔ)）, the old language of Rome（羅馬）,and also ___4___ Greek. From Latin we got words such as“wine”,“use”and“day”. From Greek we have words like“photograph”,“Bible”（圣經(jīng)）and“ink”. There are ___5___ many words from ___6___ Greek and Latin together“television”,for example. Here“tele”is Greak for“far”and“vision”comes from Latin and means“seeing”.

　　 Many common ___7___ words come from very strange places.“Tea”is from China and“banana”from West Africa.“Potato”came ___8___ the English language from Haiti（海地）, and“tomato”first came from Mexico.

　　In modern Britain there are four separate languages: English, Welsh（威爾士語(yǔ)）, Scotish Gaelic（蘇格蘭蓋爾語(yǔ)）and Irish Gaelic（愛(ài)爾蘭蓋爾語(yǔ)）. And the English language ___9___ is very different from one place to another. There are also many ___10___ in spelling, vocabulary and pronunciation ___11___ American and British English.

　　One day, a young man asked Albert Einstein, ___1___ great German scientist, ___2___ the secret（秘密）of success（成功）was. The scientist ___3___ him that the secret of success is hard work. A few days ___4___ the young man asked him the ___5___ question again. Einstein was very ___6___. He did not say ___7___, but wrote a few ___8___ on a piece of paper and ___9___ it to the young man. The young man looked ___10___ the piece of paper. On it was ___11___：A=X＋Y＋Z.“What ___12___ this mean?”asked the young man.“A means success,”___13___ the old scientist.“X means hard work, Y means good methods（方法）,and Z…Z means ___14___ talking and start to ___15___.”

　　Ballpoint pens have made life easier for millions of people. At one time ___1___ did not like their students to ___2___ with them. Perhaps it was too easy. Pens can leak（漏）and it is ___3___ Ladislao Biro ___4___ for a newspaper in Budapest. He spent all day ___5___ his desk. Day in and day out, he corrected ___6___ of thin, cheap paper with a pen and ink. He often had to stop to ___7___ his pen and it did not write ___8___ on the thin paper. He and his brother George ___9___ Some experiments. They wanted a pen that did not leak, with ink that did not spill. Why not ___10___ a little ball at the end?

　　Two Englishmen, Henry Martin and Frederick Miles, liked the ___11___. It was the ___12___ of the Second World War. The Air Force（空軍）___13___ a non-leak, non-spill pen for the men to write with in ___14___ Martin and Miles made and ___15___ many thousands of Biro“writing-sticks”to the Air Force.

　　Watt was English. When he was a child, he liked to ask questions and he was always ___3___ hard. One day, he was sitting in the kitchen with his grandmother, he ___4___ a kettle（水壺）on the stove（火爐）. Soon steam（蒸汽）began to come ___5___ the kettle and the lid（蓋子）was shaking. Watt asked what was in the kettle. His grandmother said,“Water, my child.”

　　“But I know there's ___6___ in it. It pushes the lid up.”said Watt. His grandmother told him that it was only steam. He asked his grandmother,“___7___ does the steam come up under the lid?”His grandmother said that it came from hot water. Watt said to ___8___,“The steam will be much strong. It can push things. The steam will be much ___9___ if there's more water.”

　　The bicycle is one of the simplest（最簡(jiǎn)單的）yet most useful inventions in the world. What is most surprising is that it was not invented earlier, ___1___ the great inventor Leonardo da Vinci had drawn pictures for bicycles and also for flying machines and some other things. Those things were not produced ___2___ long after he died.

　　A person riding a bicycle use ___3___ energy（能量）to make the bicycle move, and there is no pollution at all when you are riding. Even so, developed ___4___, most people don't travel to work by bicycle. It is not because the bicycles are expensive or people feel ___5___ if they ride to work. It's because ___6___ cars on the roads becomes larger. It certainly becomes ___7___ to ride a bicycle. As a result, more people put their bicycles away and go to work ___8___ their cars and, in this way, the situation（情形）is made more serious. ___9___ the best way to make riding safer and more popular is to create paths（開(kāi)設(shè)通道）only for bicycles, and to make ___10___ so difficult and expensive for drivers to take their cars into the city that they will go back to use their bicycles.

　　Many like SMS because it is easy and ___3___. Some parents felt happy because they could get in touch ___4___ their children. Some teachers said mobile phone use was, a distraction（分心的事）to students during school hours and it also gave them much ___5___ in their classrooms. Sometimes students ___6___ use phone messages to cheat（作弊）during exams. A new study found that some teenagers send messages in class even hurt their fingers because they can't stop ___7___ SMS.

　　___5___ , ads also bring people all kinds of disadvantages. For example, some of the manufacturers（業(yè)主）, in their hope to win a big ___6___ for their products, are even so dishonest that they don't ___7___ about their products. When you are watching an interesting TV play, it is suddenly ___8___ by some ads and they are appearing on the screen. All above, people may get tired of ads. Also some ads ___9___ children, and they ask their parents to buy them something in the ads. From this point, ads ___10___ have some disadvantages.

　　Can a computer（計(jì)算機(jī)）think? The answer is ___1___ yes nor no. It depends on what is meant by thinking.

　　A computer can work much ___2___ and faster than any human（人類）head. But on the other ___3___, the human head can do ___4___. It can put thoughts together in ___5___ ways and can think of new ideas. Such ___6___ ideas may have never been thought of before.

　　___7___ example, shortly after the radio was ___8___, ___9___ began to think of sending ___10___ by wireless（無(wú)線電）. Through many ___11___ of hard research work, a scientist invented（發(fā)明）the ___12___ TV set in the world. Another example is ___13___ the computer itself was ___14___ invented by humans. So a computer can't ___15___ the place of human head. It can only“think”as man wants it to.

　　Have you ever heard the story of Internet（互聯(lián)網(wǎng)）? We are all busy ___1___ about and using the Internet, but how many of us know the history of the Internet?

　　Many people are ___2___ when they find that the Internet was set up in the 1960s. At that time, computers were large and expensive. Computer network（網(wǎng)絡(luò)）didn't work well. If one computer in the network broke down, then the whole network stopped. So a network system had to be set ___3___. It should be good enough to be used ___4___ many different computers. If part of the network was not working, information could ___5___ through another part. In this way computer network system would keep on ___6___ all the time.

　　At first the Internet was only used by the government, but, in the early 1970s, universities, hospitals, and banks were allowed to use it, too. However, computers were still very ___7___ and the Internet was difficult to use. By the start of the 1990s, computers became cheaper and ___8___ to use. Scientists had also ___9___ software（軟件）that made“surfing”（瀏覽）the Internet more convenient（方便）.

　　Today it is easy to get on-line（上網(wǎng)）and it is that millions of people use the Internet every day. Sending E-mail is more and more popular. ___10___ students.