American universities are rushing towards a wireless future. They are installing networ that let students and teachers surf the Internet from laptop computers anywhere. professors say the technology26___a growing challenge: Retaining their students' attention. In a classroom at American University in Washington Deen27_ and drawbacks of the new wireless world were on display. From the back row of a lecture hall, more than a lozen laptop screens were visible. As Professor Jay Mallek lectured on the finer points of an office budget, many students went online to surf the Internet, while a young man showed amusing email to the woman next to him, and then _28_____ over to read the online __29___ of The Wall Street Journal. Distraction(注意力分散)is nothing new. As long as there have been schools, students have whispered, passed notes and even gazed out of the window a daydreamed. But the arrival of the laptop has introduced new __30____for distraction, and outwerh wireless introduces an even31_range of distraction.This is_32annoying for law professorsmany of whom still live in the world of paper“This is something that hurts the students themselves,”said Ian Ayresprofessor at Yale Law School, who__33___the Internet’s entry into the classroom.However,Professor Mallek sees it differently. He said the benefits of the technology__34__the problems. He suggested that it might even be making him a better teacher.He takes the __35___of losing his students to e-mail and online newspapers as a challenge to keep lectures interesting and lively.A) opportunities F) especially K)switchedB)threat G)broader L) automaticallyC) convey H)benefits M)posesD)opposes I) edition N)outweighE)unattractive J)demonstrates O)disorders
My ________ all ________ hard for the people.A. family; workB. family; worksC. families; workD. families; works
Secret codes （密码）keep messages private．Banks， companies， and government agencies use secret codes in doing business， especially when information is sent by computer． People have used secret codes for thousands of years．（1） ____ Code breaking never lags（落后） far behind code making．The science of creating and reading coded messages is called cryptography． There are three main types of cryptography． （2） ____ For example， the first letters of "My elephant eats too many eels" spell out the hidden message "Meet me．" （3） ____ You might represent each letter with a number， for example．Let's number the letters of the alphabet， in order， from 1 to 26．If we substitute a number for each letter， the message "Meet me" would read "13 5 5 20 13 5．" A code uses symbols to replace words， phrases， or sentences．To read the message of a real code， you must have a code book．（4） ____ For example， "bridge" might stand for "meet" and "out" might stand for "me．" The message "bridge out" would actually mean "Meet me．" （5） ____ However， it is also hard to keep a code book secret for long．So codes must be changed frequently．A．It is very hard to break a code without the code book．B．In any language， some letters are used more than others．C．Only people who know the keyword can read the message．D．As long as there have been codes， people have tried to break them．E．You can hide a message by having the first letters of each word spell it out．F．With a code book， you might write down words that would stand for other words．G．Another way to hide a message is to use symbols to stand for specific letters of the alphabet．
Directions:-|||-In this section,there is a passage with ten blanks. You are required to select one word for each blank from a list of choices-|||-given in a word bank before the passage.Read the passage through carefully before making your choices. Each choice in the-|||-bank is identified by a letter.Please write down the corresponding letter for each item in the blanks.You may not use any of the-|||-words in the bank more than once-|||-A)advantages E)demonstrates I) larger M)possible-|||-B)arrival F)differently new N)threat-|||-C)broader G)drawbacks K)obstacle O)visible-|||-D)challenge H) especially L)opposes-|||-American universities are rushing towards a wireless future. They are installing networks that let students and teachers surf the Internet from-|||-laptop computers.But professors say the technology poses a growing 26 : retaining their student attention-|||-In a classroom at American University in Washington D.C.the benefits and 27 of the new wireless work were on display.-|||-From the back row of a lecture hall,more than a dozen laptop screens were 28 . As Professor Jay Mallek lectured on the finer-|||-points of an office budget, many students went online to surf the Internet.Students write quick e-mails and send instant messages.A young man-|||-shows an amusing e-mail to the women next to him. and then switches over to read the online edition of The Wall Street Journal.Distraction is-|||-nothing 29 As long as there have been schools,students have whispered, passed notes and even gazed out the window and-|||-daydreamed.But the 30 of the laptop has introduced new opportunities for distrac and wireless introduces an even-|||-__ range of distraction.-|||-31-|||-This is __ annoying for law professors, many of whom still live in the world of paper."This is something that hurts the-|||-32-|||-students themselves,"said lan Ayres,professor at Yale Law School,who 33 the Internet's entry into the classroom.However,-|||-Professor Mallek sees it 34 He said the benefits of the technology outweigh(胜过)the problems. He suggested that it-|||-might even be making him a better teacher He takes the __ of losing his students to e-mails and online newspapers as a-|||-35-|||-challenge to keep lectures lively and interesting
从括号中选择正确的词填空，使短文意思完整，必要时需改变词的形式。(and, receive, satellite, weather, change, help, or, early, for, when, forecast, star) Now satellites are helping to forecast(预报)the weather. They are in space, and they can reach any part of the world. The 1______ take pictures of the atmosphere(大气), because this is where the weather forms(形成). They send these pictures to the 2______ station. So the scientists there can see the weather of any part of the world and tell how the weather will change. Today, nearly five hundred weather stations in sixty countries can 3______ satellite pictures. 4______ they receive the new pictures, they compare(比较)them with the earlier ones. Perhaps they may find that the clouds have 5______ during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather 6______, they can tell people about it. So the weather satellites are of a great 7______ to the scientists at the station. In the past they could forecast the weather for about 24 or 48 hours 8______. Now they can make good forecasts for three 9______ five days. Soon, perhaps, they may be able to forecast the weather 10______ a week or more ahead.
He said that two ________ would come to our school the next day.A. woman scientistsB. women scientistC. woman scientistD. women scientists
Read the following passage.After reading it，you are required to complete the answers that follow the questions.You should write your answers （no more than 3 words） on the Answer Sheer correspondingly. When you have a problem with your computer，we recommend the following troubleshooting （故障排除） tips. Once you start troubleshooting，write down each step you take.In this way，you'll be able to remember exactly what you've done and can avoid repeating the same mistakes. If your computer gives you an error message，write down as much information as possible.You may be able to use this information later to find out if other people are having the same error. If you're having trouble with a specific piece of computer hardware，an easy first step is to check all related cables to make sure they're properly connected. When all else fails，restarting the computer is a good thing to try .This can solve many basic issues you may experience with your computer. If you need additional help，you can email me at computerhelp@（1）What should you do once you start troubleshooting？Write down ____ you take.（2）Why are you advised to write down the error message as much as possible？To find out if other people are having the ____ .（3）What should you do when you have trouble with a specific piece of computer hardware？To check all ____ .（4）When should you restart your computer？When ____ .（5）What can you do if you need additional help？You can ____ the writer.
The world is not only hungry, it is also thirsty for water. This may seemstrange to you, since nearly 75％of the earth's surface is covered with water. But about 97％ of this huge amount is seawater, or salt water. Man can only drink and use the other 3％--the fresh water that comes from rivers, lakes, underground, and other sources. And we cannot even use all of that, because some of it is in the form of icebergs and glaciers. Even worse, some of it has been polluted. However, as things stand today, this small amount of fresh water, which is constantly being replaced by rainfall is still enough for us. But our need for water is increasing rapidly almost everyday. Only if we take steps to deal with this problem now can we avoid a severe worldwide water shortage later on. A limited water supply would have a bad effect on agriculture and industry. Let me give you just one small example of how necessary water is to industry. Did you know that to produce a single ton of steel, it takes about 91000 litres of water? We all have to learn how to stop wasting our precious water. One of the first steps we should take is to develop ways of reusing it. Experiments have already been done in this field, but only on small scale. The systems that have been worked out are similar to those used in spacecraft. (1) “The world...is also thirsty for water.” this means that ________. [ ]A．the world has not enough fresh water to meet our future needs B．people all over the world are thirsty for water now C．we are now facing a serious problem of world-wide water shortage D．we cannot make use of all the fresh water on earth (2) According to the passage, only about ________ of the earth's surface is covered with fresh water that can be used.[ ]A．75％B．3％C．97％D．2.3％(3) We may face a severe worldwide water shortage in the future because ________. [ ]A．the small amount of fresh water is constantly being replaced by rainfall B．some of it has been polluted C．some of it is in the form of icebergs and glaciers D．our need for fresh water is increasing rapidly (4) According to the passage, one of the first problems is ________.[ ]A．to deal with water problem now B．to have lectures on the water subject C．to develop ways of reusing water D．to work out systems that resemble those used in spacecraft (5) This passage is mainly about ________.[ ]A．water and the earth B．fresh water on earth C．water shortage problem D．experiments on how to reuse fresh water
9. (2.0分) Weather ______, the foreign guests will visit the Panda Base.A. permitsB. permittedC. permittingD. is permitted
A: How nice to see you back, Li Lei! B: Hi, Judy! I just came back yesterday. A: 1 . B: Wonderful! I've been to many places of interest and I enjoyed myself in Disneyland. A: 2 . B: Not really. Sometimes I got into trouble. They spoke too quickly and I couldn't have long conversations with the people there. 3 . A: Yes, I agree. I know English is very important, but I often feel sleepy in English classes. 4 . B: I'm afraid, too. And it's very difficult for me to remember new words. A: Me, too. I don't know what to do. 5 . B: Don't let these difficulties discourage （使气馁） you. Remember: where there is a will, there is a way. A: Sure, I won't. I'll try my best. B: So will I. A.How was your trip?B.At times I feel like giving up.C.What did you buy in the USA?D.I'm really afraid of the final exam.E.I think I should work harder in English.F.Could you make yourself understood in the USA? A.How was your trip?B.At times I feel like giving up.C.What did you buy in the USA?D.I'm really afraid of the final exam.E.I think I should work harder in English.F.Could you make yourself understood in the USA? A.How was your trip?B.At times I feel like giving up.C.What did you buy in the USA?D.I'm really afraid of the final exam.E.I think I should work harder in English.F.Could you make yourself understood in the USA? A.How was your trip?B.At times I feel like giving up.C.What did you buy in the USA?D.I'm really afraid of the final exam.E.I think I should work harder in English.F.Could you make yourself understood in the USA? A.How was your trip?B.At times I feel like giving up.C.What did you buy in the USA?D.I'm really afraid of the final exam.E.I think I should work harder in English.F.Could you make yourself understood in the USA?
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一、拼写合适的单词补全句子（答案不区分大小写；单词提示中一根小短线代表一个字母） If someone is __ob---__ , they are extremely fat.
These drugs are available over-the-counter without a(n)__________. （）A. infectionB. dosageC. prescription
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) If there is a bo-- in the economy, there is an increase in economic activity.
6. The children will now play some pieces of music that they ______ themselves. A.were taught posed C.accomplished D.worked7. While she waited,she tried to ______ her mind with pleasant thoughts of the vacation. A.occupy pose C.think D.intensify8. In the film,the peaceful life of a monk ______ the violent life of a murderer. A.is compared with B.is compared to C.is contrasted to D.is contrasted with9. ______ to pay for an order is simplicity itself. A.Use plastic B.Using plastics C.Using plastic D.Used plastic10. Additional time is required for cooking or ______ homemade dishes. A.chill B.to chill C.chilled D.chilling
拼写合适的单词补全句子(答案不区分大小写;单词提提示中一根小短线代表一个字母)Something that is inf- - - - - has no limit,end,or edge.
The coming of the railways in the 1830s ________ our society and economic life.A. transferredB. transformedC. transportedD. transmitted
选择合适的单词补全句子。-|||-I __ in the city.-|||-live lives
选择合适的单词补全句子
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) To enh ---- something means to improve its value, quality, or attractiveness.
Elder and weaker Mr. Mag paid_visits to his old friends.A. scarceB. rare()C. insufficientD. inadequate
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个字母 ) A seq----- of events or things is a number of events or things that come one after another in a particular order.
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中根小短线代表一个 字母 ) A va---- is a space that contains no air or other gas.
If you_________in a job for several years, you may be able to accumulate a lot of work experience and skills that would be beneficial to your future career development.A. have workedB. had workedC. have been workingD. had been working
The Harry Potter series, written by J.K. Rowling, is perhaps the most popular set of novels of the modern era. With seven books and many successful films to its name, the series has gathered about 15 billion dollars in sales. How did the series become so popular? The reason can be broken down into several areas.The first book in the series was rejected 12 times before it was picked up by Bloomsbury—a small publisher in England. So receiving this contract was Rowling's first step to success. However, getting a book contract does not ensure the success of a book. The story was soon loved by children and adults alike. In light of this, Bloomsbury Publishing published a second version of the books with “adult” (less colorful and more boring) book covers. This made it easier for a full range of ages to enjoy the series.Another factor that worked like a charm was that the publisher and Rowling herself, through the books, conducted midnight releases, promotions, and pre-ordering more readers. Customers who feared that their local bookstore would run out of copies responded by pre-ordering over 700,000 copies before the July 8, 2000 release.What does the underlined word “releases” (Para. 3) mean?A. The activity that frees or expresses energy or emotion.B. The announcement about the book’s publishing information.C. The sales of books that is available only at midnight.
question or statement.Hot pot is a traditional dish in China. It is believed to date back more than 1,000 years to the time of the Jin Dynasty. Hot pot's origins can be found in the dining practices of Mongolian horsemen who rode across the steppe and into northern China. Legend has it that the Mongols used their helmets as pots to simmer (炖) broth (汤底) over open fires, and cooked chunks of meat in the broth.Hot pot cooking seems to have spread to northern China during the Tang Dynasty. In the regional variations developed with different ingredients such as seafood. In the centuries that witnessed the growth of the Song Dynasty, hot pot moved — and changed — further south, with each successive region adapting it to their local ingredients and tastes.The ingredients in a hot pot vary a lot from region to region. Perhaps the most famous hot pot is the Chongqing or Sichuan hot pot. It features a dark red broth chock-full (塞满了的) of spices, chili peppers, and the uniquely mouth-numbing Sichuan peppers. In Beijing and elsewhere in the north, hot pot broth tends to be mild and, compared to its racy southern "cousins", a little light. In the northeast of China, a kind of local sauerkraut (酸菜) is used to add some tang (强烈的味道), making the broth a bit sour. People can choose a version of hot pot according to their taste.1 Hot pot is believed to date back more than 1,000 years to the time of _______.A. the Jin Dynasty B. the Tang DynastyC. the Song Dynasty D. the Yuan Dynasty
The increase in international business and in foreign investment has created a need for executives with knowledge of foreign languages and skills in cross-cultural communication. Americans, however, have not been well trained in either area and, consequently, have not enjoyed the same level of success in negotiation in an international arena as have their foreign counterparts. Negotiating is the process of communicating back and forth for the purpose of reaching an agreement. It involves persuasion and compromise, but in order to participate in either one, the negotiators must understand the ways in which people are persuaded and how compromise is reached within the culture of the negotiation. In many international business negotiations abroad, Americans are perceived as wealthy and impersonal. It often appears to the foreign negotiator that the American represents a large multi-million-dollar corporation that can afford to pay the price without bargaining further. The American negotiator’s role becomes that of an impersonal supplier of information and cash. In studies of American negotiators abroad, several traits have been identified that may serve to confirm this stereotypical perception, while undermining the negotiator’s position. Two traits in particular that cause cross-cultural misunderstanding are directness and impatience on the part of the American negotiator. Furthermore, American negotiators often insist on realizing short-term goals. Foreign negotiators, on the other hand, may value the relationship established between negotiators and may be willing to invest time in it for long-term benefits. In order to solidify the relationship, they may opt for indirect interactions without regard for the time involved in getting to know the other negotiator. Clearly, perceptions and differences in values affect the outcomes of negotiations and the success of negotiators. For Americans to play a more effective role in international business negotiations, they must put forth more effort to improve cross-cultural understanding. [共5题](1)What kind of manager is needed in present international business and foreign investment? [本题2分]A. The man who represents a large multi-million-dollar corporation. B. The man with knowledge of foreign languages and skills in cross-cultural communication. C. The man who is wealthy and impersonal. D. The man who can negotiate with his foreign counterparts.
拼写合适的单词补全句子 ( 答案不区分大小写 ; 单词提示中一根小短线代表一个 字母 ) To aut _ _ _ _ _ a factory , office , or industrial process means to put in machines which can do the work instead of people.
ⅢComplete the following sentences with the given sentence structures-|||-get ready for.sa为························备-|||-e.g.Susan has to buy a lot of things to get ready for her trip.(苏珊不得不买很多东西为旅行做准备。)-|||-1 The boy got up early to __ (为上学做准备).-|||-2 I have a lot of work to do to __ (为明天做准备).
拼写合适的单词补全句子（答案不区分大小写；单词提示中一根小短线代表一个字母） Someone or something that is so---- is very serious rather than cheerful or humorous.