单选题The shop assistant was fired as she was ______ of cheating customers.

单选题In spite of the strong opposition to new and strict environmental laws, however, it is still possible to attack the problem of chemical pollution; but we must attack it from three directions. First, we need more independent research into the effects of chemicals by scientists who are not paid by the government or by large industrial companies. Second, scientists need to educate the general public and inform them about the dangers of chemicals in the environment. If the public knows that a certain chemical threatens the health of their children, then it will put pressure on politicians in office, they will take action to correct the long-term economic costs of chemicals. It will be extremely expensive to clean areas of land which are contaminated (污染) by chemicals; it will be even more costly to give medical treatment to people who are suffering from serious illnesses after exposure to dangerous chemicals. If governments realize this, the short-term economic benefits of chemicals will seem much less attractive to them. If we can put pressure on governments in these three ways, perhaps they will begin to behave more responsibly. They will perhaps pass new laws against pollution and enforce them strictly. Perhaps, then, the chemical producers will begin to behave more responsibly.

单选题The older view is that the laws of Nature are absolute, though they may have been inaccurately ______.

单选题Eye contact is important in relationship because it ______to show attention and interest.

单选题Woman: I don't think we should have told Tom about the surprise party for Lucy. Man: It's all right. He promised not to tell, and he doesn't make promises lightly. Question: What does the man mean? A. Tom has arranged a surprise party for Lucy. B. Tom will keep the surprise party a secret. C. Tom and Lucy have no secrets from each other. D. Tom didn't make any promise to Lucy.

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单选题The room is so ______ with furniture—hat it is hard to move about.

单选题Do patents help or hinder innovation? Instinctively, they would seem a blessing. Patenting an idea gives its inventor a 20-year monopoly to exploit the fruit of his la- bor in the marketplace, in exchange for publishing a full account of how the new product, process or material works for everyone to see. For the inventor, that may be a reasonable trade-off. For society, however, the loss of competition through the granting sole rights to an individual or organization is justified only if it stimulates the economy and delivers goods that change people's lives for the better. Invention, though, is not innovation. It may take a couple of enthusiasts working evenings and weekends for a year or two--not to mention tens of thousands of dollars of their savings--to get a pet idea to the patenting stage. But that is just the beginning. Innovations based on patented inventions or discoveries can take teams of researchers, engineers and marketing experts a decade or more, and tens of millions of dollars, to transfer to the marketplace. And for every bright idea that goes on to become a commercial winner, literally thousands fall by the wayside. Most economists would argue that, without a patent system, even fewer inventions would lead to successful innovations, and those that did would be kept secret for far longer in order to maximize returns. But what if patents actually discourage the combining and recombining of inventions to yield new products and processes--as has happened in biotechnology, genetics and other disciplines? Or what about those ridiculous business-process patents, like Amazon.com's "one-click" patent or the "nameyour-price" auction patent assigned to Priceline.com? Instead of stimulating innovation, such patents seem more about extracting "rents" from innocent bystanders going about their business. One thing has become clear since business-process patents took off in America during the 1990s: the quality of patents has deteriorated markedly. And with sloppier patenting standards, litigation has increased. The result is higher transaction costs all round. It is not simply a failure of the United States Patent and Trademark Office (USPTO) to examine applications more rigorously. The Federal Circuit has been responsible for a number of bizarre rulings. Because of its diverse responsibilities, the Federal Circuit--unlike its counterparts in Europe and Japan--has never really acquired adequate expense in patent law. To be eligible for a patent, an invention must not just be novel, but also useful and non-obvious. Anything that relies on natural phenomena, abstract ideas or the laws of nature does not qualify. The USPTO has taken to requiring a working prototype of anything that supposedly breaches the laws of physics. So, no more perpetualmotion machines, please.

单选题Have you ever heard of the Aesop Fable, "The Belly(肚子)and The Members"? As you read the following story, I encourage you to think about your own teams and how this might 11 . One day it 12 to The Members of the Body that they were doing all of the work while the Belly got all of the food. They believed the Belly was 13 and unproductive. They held a meeting to discuss how 14 this seemed. After a very long meeting, The Members of the Body decided to go on strike until the Belly agreed to take its proper 15 of the work. The unhappy body parts didn"t do anything for several days to stop 16 the Belly. The Hands stopped moving and the Teeth stopped chewing. 17 , the Legs became more and more fired and the Hands could 18 move anymore. Eventually the entire Body collapsed. What is the moral of the story? Some members" contribution may seem of less 19 than that of others. It is important that every member of the team understands their unique roles and 20 they bring to the team. It is also important that they clearly understand everyone else"s roles and contributions.

单选题Villagersare __________ nottoswimintheriversinceitisquitedeepanddangerous

单选题I think it was all fixed up by lawyers or ______ arranges adoptions. A. someone B. anyone C. whoever D. those

单选题Among the lowest of the judicial ranks, justices of the peace nevertheless re quently exercise jurisdiction over a variety of misdemeanors.

单选题Strange things have been happening to England. Still (1) from the dissolution of the empire in the years (2) World War Ⅱ, now the English find they are not even British. As the cherished "United Kingdom" breaks into its (3) parts, Scots are clearly (4) and the Welsh, Welsh. But who exactly are the English? What's left of them, with everything but the (5) half of their island taken away? Going back in time to (6) roots doesn't help. First came the Celts, then the Romans, then Angles, Saxons, Jutes, Danes. Invasion after invasion, until the Norman Conquest. English national identity only seemed to find its (7) later, on the shifting sands of expansionism, from Elizabethan times onwards. The empire seemed to seal it. But now there's just England, (8) of a green island in the northern seas, lashed by rain, scarred by two (9) of vicious industrialization fallen (10) dereliction, ruined, as D．H. Lawrence thought, by "the tragedy of ugliness," its abominable architecture. Of all English institutions, the one to (11) on would surely be the pub. Shelter to Chaucer's pilgrims, home to Falstaff and Hal, throne of felicity to Dr. Johnson, the pub- that smoky, yeasty den of jollity-is the womb of (12) , if anywhere is. Yet in the midst of this national (13) crisis, the pub, the mainstay of English life, a staff driven (14) into the sump of history, (15) as the Saxons, is suddenly dying and evolving at (16) rates. Closing at something like a rate of more than three a day, pubs have become (17) enough that for the first time since the Domesday Book, more than half the villages in England no longer have one. It's a rare pub that still (18) , or even limps on, by being what it was (19) to be: a drinking establishment. The old (20) of a pub as a place for a "session," a lengthy, restful, increasingly tipsy evening of swigging, is all but defunct.

单选题Two sounds are in free variation when they occur in the same environment and do not contrast, namely, the substitution of one for the other does not produce a different word, but merely a different pronunciation.