The Sahara can be described as______A) a place of contrastsB) a place where no one livesC) an area where the winters are coldD) an area that appeals to many tourists
The Sahara can be described as______
A) a place of contrasts
B) a place where no one lives
C) an area where the winters are cold
D) an area that appeals to many tourists
B) a place where no one lives
C) an area where the winters are cold
D) an area that appeals to many tourists
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共用题干I'll Be BachComposer David Cope is the inventor of a computer program that writes original works of clas-sical music .It took Cope 30 years to develop the software.Now most people can't_____(51) the difference between music by the famous German composer J. S.Bach(1685-1750)and the Bach-like compositions from Cope's computer.It all started in 1980 in the United States,when Cope was trying to write an opera. He was having____(52)thinking of new melodies,so he wrote a computer program to create the melodies.At first this music was not_____(53)to listen to. What did Cope do?He began to rethink how human beings compose music .He realized that composers,brains_____(54)like big databases. First,they take in all the music that they have ever heard.Then they take_____（55)the music that they dislike.Finally,they make new music from what is_______(56).According to Cope,only the great composers are able to create the database accurately, remember it,and form new musical patterns from it.Cope built a_____(57)database of existing music.He began with hundreds of works by Bach .The software analyzed the data:it______(58)it down into smaller pieces and looked for patterns. It then combined the______(59)into new patterns. Before long,the program could compose short Bach-like works.They weren't good,but it was a start.Cope knew he had more work to do—he had a whole opera to write.He continued to improve the software. Soon it could______(60)more complex music.He also added many other com-posers,including his own work to the database.A few years later,Cope's computer program,called“Emmy”,was ready to help him with his opera. The______(61)required a lot of collaboration between the composer and Emmy. Cope listened to the computer's musical ideas and used the______(62)that he liked.With Emmy,the opera took only two weeks to finish.It was called Cradle Falling,and it was a great _____(63)!Cope received some of the best reviews of his career,but no one knew exactly _____(64)he had composed the work.Since that first opera,Emmy has written thousands of compositions.Cope still gives Emmy feedback on what he likes and doesn't like of her music,_____(65)she is doing most of the hard work of composing these days!64._________A: whenB: howC: whatD: why
共用题干Microchip Research Center CreatedA research center has been______(51)in this Far Eastern country to develop advanced microchip production technology.The center,which will start out with about US$14 million,will help the country develop its chip industry without always depending on imported technology.The center will make use of its research skills and______(52)to develop new technology for _______(53)chip plants.The advent of the center will possibly free the country from the_______(54) that it is always buying almost-outdated technologies from other countries,said the country's flagship chipmaker.______(55),chip plants in this country are in a passive situation because many foreign governments don't allow them to______(56)the most advanced technologies,fearing they will be used for______(57) purposes.Moreover,the high licensing fees they have to pay to technology providers are also an important _(58)for their decision of self-reliance.As mainstream chip production technology______(59)from one generation to the next every three to five years,plants with new technology can make more powerful chips at lower costs,while plants with______(60)equipment,which often cost billions of dollars to build,will be______(61)by the maker.More than 10 chip plants are being built,each costing millions of US dollars.The majority of that money goes to overseas equipment______(62)and technology owners-mainly______(63)Japan and Singapore.Should the new center play a major role in improving the situation in the industry,the country admits the US $14 million investment is still rather small.This country is developing______(64)technologies.Most of the investment will be spent on setting_______(65)with technology and intellectual property owners.65._________A:agreements B:motivations C:together D:alliances
This is not typical of English,but is a feature of the Chinese language.A: particularB: characteristicC: remarkableD: idiomatic
共用题干The Greatest Mystery Of WhalesThe whale is a warm-blooded,air-breathing animal,giving birth to its young alive, sucking them一and,like all mammals,originated on land.There are many_________(1)of this. Its front flippers（鳍状肢）,used for steering and stability,are traces of feet.Immense strength is_________(2)into the great body of the big whales,and in fact most of a whale's body is one gigantic muscle.The blue whale's pulling strength has been estimated_________(3)400 horsepower. One specimen was reported to have towed（拖）a whaling vessel for seven hours at the_________(4)of eight knots （节）.An angry whale will_________(5)a ship.A famous example of this was the fate of whaler Essex,_________(6)was sunk off the coast of South America early in the last century. More recently,steel ships have_________(7) their plates buckled（使弯曲）in the same way. Sperm whales（抹香鲸）were known to seize the old-time whaleboats in their jaws and crush them.The greatest_________(8)of whales is their diving ability.The sperm whale dives to the bottom for his_________(9) food, the octopus（章鱼）.In that search he is known to go as far down as 3, 200 feet,where the_________(10)is 1,400 pounds,toa square inch.Doing so he will_________(11)underwater long as one hour. Twospecial skills are involved in this:storing up enough_________(12)(all whales are air-breathed)and tolerating the great change in pressure.Just how he does it scientists have not_________(13).It is believed that some of the oxygen is stored in a special _________(14)of blood vessels,rather than just held in the lungs.And it is believed that a special kind of oil in his head is some sort of compensating mechanism that _________(15)adjusts the internal pressure of his body.But since you can't bring a live whale into the laboratory for study,no one knows just how these things work._________(14)A:system B:place C:arrangement D:equipment
共用题干A Great Quake Coming?Everyone who lives in San Francisco knows that earthquakes are common in the Bay Area一and they can be devastating. In 1906,for example,a major quake destroyed about 28,000 buildings and killed hundreds,perhaps thousands of people.Residents now wonder when the next"Big One"will strike.It's bound to happen someday. At least seven active fault（断层）lines run through the San Francisco area. Faults are places where pieces of Earth'S crust（地壳）slide past each other.When these pieces slip,the ground shakes.To prepare for that day,scientists are using new techniques to reanalyze the 1906 earthquake and pre- diet how bad the damage might be when the next one happens.One new finding about the 1906 earthquake is that the San Andreas fault split apart faster than scientists had assumed at the time. During small earthquakes,faults rupture（断裂）at about 2.7 kilometers per second. During bigger quakes,however.ruptures can happen at rates faster than 3.5 kilometers per second.At such high speeds,massive amounts of pressure build up,generating underground waves that can cause more damage than the quake itself. Lucky for San Francisco , these pressure pulses（脉冲）traveled away from the city during the 1906 event.As bad as the damage was,it could have been far worse.Looking ahead,scientists are trying to predict when the next major quake will occur. Records show that earthquakes were common before 1906.Since then,the area has been relatively quiet.Patterns in the data, however,suggest that the probability of a major earthquake striking the Bay Area before 2032 is at least 62percent.New buildings in San Francisco are quite safe in case of future quakes.Still,more than S4 percent of the city’s buildings are old and weak.Analyses suggest that another massive earthquake would cause extensivedamage.People who live there today tend to feel safe because San Francisco has remained pretty quiet for a while.According to the new research,however,it's not a matter of"if" the Rig One will hit.It',just a mat-ter of when.Scientists will be able to predict the exact time of an earthquake soon.A:RightB:WrongC:Not mentioned
共用题干Migrant（移民的）WorkersIn the past twenty years,there has been an increasing tendency for workers to move from one country to another. While some countries have restricted（限制）most ___________(1)to local people,others have attracted and welcomed migrant workers. This is particularly the case in the Middle East,___________(2)increased oil incomes have enabled many countries to call in outsiders to improve local facilities（设施）.Thus the Middle East has attracted oil-workers___________(3)the U. S. A. and Europe.It has also brought in workers from many other countries,___________(4)South Korea andJapan.In view of the difficul州lying and working___________(5)in the Middle East,it is not surprising that the pay is high to attract suitable workers.Many engineers and technicians can___________(6)at least twice as much money the Middle East as they can in theirown country, and this is a major ___________(7).Sometimes a disadvantage has a compensating(补偿的) advantage.For example, the___________(8)living conditions often lead to increased friendship when workers have to___________(9)on each other for safety and comfort. In a similar way,many migrant workers can save large sums of money partly because of the___________(10)of entertainment（娱乐）facilities. The work is often complex and full of problems but this merely presents greater challenge to engineers who prefer to find solutions to problems rather than do___________(11)work in their home country.One major problem which___________(12)migrant workers in the Middle East is that their jobs are temporary ones.They are nearly always on___________(13),so it is not easy for them to plan ahead with great confidence.This is to be___________(14)since no country welcomes a large number of foreign workers as permanent residents.In any___________ (15),migrant workers accept this disadvantage,along with others, because of the considerable financial benefits which they receive._________(4)A:opposing B:limiting C:including D:asking
I have been trying to quit smoking.A:give up B:pick up C:build up D:take up