单选题As computer security systems become even more advanced, ______the methods of those who try to break into them illegally.

单选题{{B}}Passage Two{{/B}} There are three trends most widely blamed for causing environmental problems—population growth, urbanization and industrialization. The world's population is increasing by around 85 million every year—the equivalent of, say, another Mexico. The pace of growth has come down a little since the 1960s, but according to United Nations projections it remains fast enough to push the world's population above 9 billion, from around 6 billion today. Most of that growth will be in developing countries. The population explosion of the past few decades has been due to a happy trend: a dramatic rise in life expectancy (平均寿命), thanks in part to the spread of modern medicines and better sanitation. But, say environmentalists, the world's Supply of natural resources is finite, and in some regions particular resources are already scarce (water in the Middle East, certain species of fish in the North Atlantic). How can these resources be made to go round an extra 3 billion people? Increasing urbanization is another environmental worry. The historic movement from country to town in rich countries is now being echoed in poor countries, but on a much bigger scale. The UN expects that between 1990 and 2025 the number of people living in urban areas will double to more than 5 billion, and that 90% of that growth will be in developing countries. In Africa and Asia more than half the population still lives in the countryside, compared with only a fifth in Europe and North America. Country-dwellers in developing countries are moving to cities for the same sort of reasons as in the rich countries in the 19th century: they are pushed by a scarcity of farm jobs, and they are pulled by the hope of better jobs and a better life. Governments in many developing countries have accelerated this progress by pursuing economic policies that discriminate against agriculture: until recently, for example, many governments kept food prices artificially low. The reason why urbanization is likely to harm the local environment is simply that people are much more densely crowded together. Burn a tyre in the countryside, and no one may worry about it; but in the city it will cause a great many coughs and splutters (杂乱的声音). Industrialization, too, is an obvious cause of environmental problems. Today's rich countries moved first from agriculture to manufacturing industries which use resources intensively, and later to services and less polluting types of manufacturing. Many developing countries are now undergoing that first transition at the same time succumbing to (屈从于) a temptation not available in the 19th century: motor vehicles.

单选题The large size and roughly circular shape of the Pacific made some scientists think that it ______ a hole left when the moon separated from the earth. A. used to be B. would have been C. might have been D. should have been

单选题The word “extras” used in this story mean, people who____.

单选题If she ______ here next week, we would know her decision. A. will be B. were to be C. would have been D. is to be

单选题Man: How did Eddy do in the interview? Woman: Very well. He left the room with only one question unanswered. Question: How well did Eddy do in the interview?

单选题When an invention is made, the inventor has three possible courses of action open to him: he can give the invention to the world by publishing it, keep the idea secret, or patent it. A granted patent is the result of a bargain made between an inventor and the state, by which the inventor gets a limited period of monopoly (垄断) and publishes full details of his invention to the public after that period terminates (终止). Only in most exceptional circumstances is the life-span of a patent extended to alter this normal process of events. The longest extension ever granted was to Georges Valensi: his 1939 patent for color TV receiver circuitry was extended until 1971 because for most of the patent's normal life there was no color TV to receive and thus no hope of reward for the invention. Because a patent remains permanently public after it has terminated, the shelves of the library attached to the patent office contain details of literally millions of ideas that are free for anyone to use and, if older than half a century, sometimes even re-patent. Indeed, patent experts often advise anyone wishing to avoid the high cost of conducting a search through live patents that the one sure way of avoiding violation of any other inventor's right is to plagiarize a dead patent. Likewise, because publication of an idea in any other form permanently invalidates (使无效) further patents on that idea, it is traditionally safe to take ideas from other areas of print. Much modern technological advance is based on these presumptions of legal security. Anyone closely involved in patents and inventions soon learns that most "new" ideas are, in fact, as old as the hills. It is their reduction to commercial practice, either through necessity of dedication, or through the availability of new technology, that makes news and money. The basic patent for the theory magnetic recording dates back to 1886. Many of the original ideas behind television originate from the late 19th and early 20th century. Even the Volkswagen rear engine car was anticipated by a 1904 patent of a cart with the horse at the rear.

单选题In Australia the Asians have made their influence ______ in businesses, large and small. A. feeling B. feel C. felt D. to be felt

单选题Speaker A: David said he bought a new BWM for ￡5,000. Speaker B: ______ Sounds pretty cheap to me! A: Well, that"s what he said.

单选题The whole village ______ by a sudden flood, they had to stay in tents. A. having been destroyed B. has been destroyed C. was destroyed D. had been destroyed

单选题Sewing one's own clothes is a way of saving money and allows one to choose a favorite style and ______. A. fabric B. linen C. cheque D. silk

单选题Woman: I've changed my mind and would like to take the new approach.Man: You're on the right track now!Question: What does the man mean?

单选题The picturesque scenery of his hometown has often______him to write poems.

单选题Speaker A: I wonder what's happened to Jerry. He hasn't been around for at least two weeks. Speaker B: ______ A. Yes, two weeks have passed before you know where you are. B. Jerry is quite introvert. He doesn't like to let others know much about him. C. Do you know the reason for his absence? D. He took a leave to see his mother in Europe.

单选题The doctor was ______ about what to do with the case; he just couldn"t find the cause Of the illness.

单选题W: I wish I hadn"t hurt Linda"s feeling like that yesterday. You know I never meant to. M: The great thing about Linda is that she doesn"t hold any grudges. By tomorrow she"ll have forgotten all about it. Q: What does the man say about Linda?

单选题She_____that it was a trick to get her involved in the matter, for she knew them too well.

单选题Too often teachers' ______ with parents involve complaints about children's misbehaviors and laziness. A. acquaintances B. association C. conferences D. consultations

单选题Hanya Holm is a dancer, choreographer, and ______.

单选题Man: Let's see if the basketball has started yet.Woman: Started? It must be clear who is winning by now.Question: What does the woman mean? A. The same team always wins. B. The game began some time ago. C. They had better see who is winning. D. Now is a good time to start playing.