单选题To prevent flooding in winter the water flowing from the dam is constantly ______ by a computer. [A] graded [B] managed [C] conducted [D] monitored

单选题Today scientists have a greater understanding of genetics and its role in______or ganisms.

单选题What does the word "discount" (Par

单选题{{B}}Directions:{{/B}} Below each of the following passages you will find altogether 20 questions or incomplete statements. Each question or statement is followed by four choices marked A, B, C and D. Read each passage carefully, and then select the choice that best answers the question or completes the statement. Blacken the corresponding letter of your choice on your Answer Sheet. {{B}}Passage One{{/B}} Efforts to educate people about the risks of substance abuse seem to deter some people from using dangerous substances, if such efforts are realistic about what is genuinely dangerous and what is not. Observed declines in the use of such drugs as LSD, PCP, and Quaaludes since the early 1970s are probably related to increased awareness of the risks of their use, and some of this awareness was the result of warnings about these drugs in "underground" papers read by drug users. Such sources are influential, because they do not give a simple "all drugs are terrible for you" message. Drug users know there are big variations in danger among drugs and antidrug education that ignores or denies this is likely to be ridiculed. This is illustrated by the popularity among young marijuana users of Reefer Madness, a widely unrealistic propaganda, film against marijuana made in the 1930s. This film made the rounds of college campuses in the 1970s and joined rock-music videos on cable television's MTV in the 1980s. Instead of deterring marijuana use, it became a cult film among users, many of where got high to watch it. Although persuasion can work fir some people if it is balanced and reasonable, other people seem immune to the most reasoned educational efforts. Millions have started smoking even through the considerable health risks of smoking have been well known and publicized for years. Moreover, the usefulness of education lies in primary prevention: prevention of abuse among those who presently have no problem. Hence, Bomier's contention that "if the Pepsi generations can be persuaded to drink pop wine, they can be persuaded not to drink it while driving" is probably not correct, since most drunken driving is done by people who already have significant drinking problems, and hence seem not to be dissuaded even by much stronger measures such as loss of a driver's license.

单选题Max, a student of Chinese literature from Australia, is very ______ Beijing opera. A. fond in B. fond for C. keen for D. keen on

单选题All our attempts to ______ the child from drowning were in vain.

单选题A great horned owl hoots across the quiet water-and then glides through the stand of bald cypress along the eastern side of the swamp. Whip-poor-wills call; bullfrogs croak; mosquitoes hum. Darkness creeps across the swamp. (71) Offering a different set of treats every season, the refuge attracts a wide variety of visitors during the hunting season, during the fishing season, and during the bird-watching season. (72) Canada geese far outnumber other waterfowl, but snow geese, blue geese, and occasionally white-fronted geese winter there, too. Nearly every variety of duck, diver and puddle, reside in the quiet, smaller sloughs. As a result, the swamp attracts hunters in 'early winter, goose hunters to the pits and duck hunters to the blinds. The hunters' closely regulated success is the result of hundreds of acres of corn left standing by Pose County farmers, who rent the rich bottom land between the lake and the river by sealed bid. The farmers' contract requires them to leave 25% of the harvest as food for the thousands of waterfowl, encouraging them to stay. The encouragement works, much to the hunters' delight. (73) Attracted by the spring crappie run, fishermen haul in hefty stringers of slabs and return to fish for bluegill. Evening campfires turn skillets full of fresh fillets into plates full of succulent morsels. Then sunrise sends the bass fishermen scurrying to secret waters, some to return with empty bags. One fisherman, however, boats three, one weighing in at 8 pounds 2 ounces. Later in the day, a few trotlines yield spoonbill catfish, those prehistoric monsters weighing 30 pounds or more as long as a man is tall. In late afternoon or early evening, a jug fisherman occasionally bags perch, catfish, or even a wily gar, long, slender, and sharp-toothed. Spring moves auto summer, and summer moves into autumn. (74) Boasting none of the amenities of modern campgrounds, Hovey Lake nevertheless attracts 90, 000 visitors a year, visitors who hunt and fish and watch the birds. (75) They hear the owls, the whip-poor-wills, the frogs, even the mosquitoes, and know that in the chain of this uncommon swamp life, every link must stay intact.A. They come to appreciate the swamp for what it is, a precious ecological system struggling to survive man's intrusion.B. In spring, however, the fishermen replace the hunters on Hovey Lake waters.C. Only then, when the lake is closed for waterfowl migration, do the fishermen leave.D. Because the swamp is situated along the Mississippi flyway, it offers refuge to 40, 000 to 50, 000 waterfowl each winter.E. Indiana's cypress swamp, protected as a wildlife refuge, greets visitors with night sounds common to the uncommon 1,400-acre environment.F. The most experienced hunters and fishermen at Hovey Lake, however, are not human.

单选题To be ______ I couldn't understand what he was getting at. If you wanted to know you'd better ask someone else.

单选题Our visual perception depends on the reception of energy reflecting or radiating from ______ which we wish to perceive. A. it B. these C. that D. those

单选题The scenery on the way was truly spectacular , with beautiful mountains, rivers and valleys, and I took a lot of pictures from the window.

单选题The concept of ______ grouping of people with similar interests and abilities was very popular among educators. A. segregated B. integrated C. homogeneous D. heterogeneous

单选题With its anti-terrorism campaign taking ______ over anything else, the government is extending its job and running in more affairs. A. superiority B. priority C. majority D. polarity

单选题Tom and Ben have ______again and stop talking to each other.

单选题The fish that have developed long feelers use them to ______.

单选题Comedian George Carlin has a routine in which he talks about how humans seem to spend their lives accumulating "stuff". Once they"ve gathered enough stuff, they have to find places to store all of it. If Carlin were to update that routine today, he could make the same 1 about computer information. It seems that everyone with a computer spends a lot of time acquiring data and then trying to find a way to 2 it. For some computer owners, finding enough storage space to hold all the data they"ve acquired is a real challenge. Some people invest in larger hard drives. Others prefer 3 storage devices like thumb drives or compact discs. Desperate computer owners might delete entire folders worth of old files in order to make space for new information. 4 some are choosing to rely on a growing trend: cloud storage. While cloud storage sounds like it has something to do with weather 5 and storm systems, it really refers to saving data 6 an off-site storage system maintained by a third party. 7 storing information to your computer"s hard drive or other local storage device, you save it to a remote database. The Internet provides the connection between your computer and the database. On the surface, cloud storage has several advantages 8 traditional data storage. For example, if you store your data on a cloud storage system, you"ll be able to get to that data from any location that has Internet access. You 9 need to carry around a 10 storage device or use the same computer to save and 11 your information. With the right storage system, you could even allow other people to access the data, turning a personal project into a 12 effort. So cloud storage is convenient and offers more 13 , but how does it work? There are hundreds of different cloud storage systems. Some have a very specific 14 , such as storing Web e-mail messages or digital pictures. Others are 15 to store all forms of digital data. Some cloud storage systems are small operations, while others are so large that the physical equipment can fill 16 an entire warehouse. The facilities that 17 loud storage systems are called data centers. At its most basic level, a cloud storage system needs just one data server 18 to the Internet. A client e. g. , a computer user subscribing to a cloud storage service sends copies of files over the Internet to the data server, which then records the information. When the client wishes to retrieve the information, he or she accesses the data server through a Web-based interface. The server then either sends the files back to the client or allows the client to access and manipulate the files on the server itself. Cloud storage systems generally rely on hundreds of data servers. Because computers 19 require maintenance or repair, it"s important to store the same information on multiple machines. This is called redundancy. Without redundancy, a cloud storage system couldn"t 20 clients that they could access their information at any given time. Most systems store the same data on servers that use different power supplies. That way, clients can access their data even if one power supply fails.

单选题The matter is ______ settled; we may look upon it as being settled. A. as long as B. for good C. for sure D. as good as

单选题It is common to think that other animals are ruled by instinct whereas humans lost their instincts and ruled by reason, and that this is why we are so much more flexibly intelligent than other animals. William James, in his book Principles of Psychology, took the opposite view. He argued that human behavior is more flexibly intelligent than that of other animals because we have more instincts than they do, not fewer. We tend to be blind to the existence of these instincts, however, precisely because they work so well—because they process information so effortlessly and automatically. They structure our thought so powerfully, he argued, that it can be difficult to imagine how things could be otherwise. As a result, we take normal behavior for granted. We do not realize that normal behavior needs to be explained at all. This instinct blindness makes the study of psychology difficult. To get past this problem, James suggested that we try to make the natural seem strange. It takes a mind debauched by learning to carry the process of making the natural seem strange, so far as to ask for the why of an instinctive human act. In our view, William James was right about evolutionary psychology. Making the natural seem strange is unnatural—it requires the twisted outlook seen, for example, in Gary Larson cartoons. Yet it is a central part of the enterprise. Many psychologists avoid the study of natural competences, thinking that there is nothing there to be explained. As a result, social psychologists are disappointed unless they find a phenomenon that would surprise their grandmothers and cognitive psychologists spend more time studying how we solve problems we are bad at, like learning math or playing chess, than ones we are good at. But our natural competences—our abilities to see, to speak, to find someone beautiful, to reciprocate a favor, to fear disease, to fall in love, to initiate an attack, to experience moral outrage, to navigate a landscape, and myriad others—are possible only because there is a vast and heterogeneous array of complex computational machinery supporting and regulating these activities. This machinery works so well that we don"t even realize that it exists—we all suffer from instinct blindness. As a result, psychologists have neglected to study some of the most interesting machinery in the human mind.