单选题His shoes were shined to perfection.A. polishedB. clearedC. washedD. mended

单选题The whole idea to build a deluxe hotel here sounds insane to me.

单选题After a generation of non-fault divorce in America, law-makers in some states are being asked to make it harder to end a marriage when one spouse does not want to call it off. Proposals in several states to make contested divorces harder to obtain are supported by conservative groups seeking to promote their concept of family values. These proposals would go back, in contested divorces cases, the old requirement that one spouse should show the other was "at-fault", such as being unfaithful, abusive, a drug user or someone who deserts the marriage. That would be a big shift from current divorce laws. No-fault divorce law has been enacted throughout America since California put the first one on the books in 1970. Under such laws, someone can get a divorce on grounds that the marriage has broken down without having to claim wrongdoing by the other spouse. No-fault divorces can be obtained even if one spouse does not agree to dissolve the marriage. No-fault divorce law first came into practice inA. a state in the west.B. a state in the upper mid-west.C. a state in the east.D. a state in the nort

单选题Car Thieves Could Be Stopped Remotely Speeding off in a stolen car, the thief thinks he has got a great catch. But he is in a nasty surprise. The car is fitted with a remote immobilizer, and a radio signal from a control center miles away will ensure that once the thief switches the engine (51) , he will not be able to start it again. For now, such devices (52) only available for fleets of trucks and specialist vehicles used on construction sites. But remote immobilization technology could soon start to trickle down to ordinary cars, and (53) be available to ordinary cars in the UK (54) two months. The idea goes like this. A control box fitted to the car incorporates (55) miniature cellphone, a microprocessor and memory, and a GPS satellite positioning receiver. (56) the car is stolen, a coded cellphone signal will tell the unit to block the vehicle's engine management system and prevent the engine (57) restarted. There are even plans for immobilizers (58) shut down vehicles on the move, though there are fears over the safety implications of such a system. In the UK, an array of technical fixes is already making (59) harder for car thieves. "The pattern of vehicles crime has changed," says Martyn Randall of Thatcham, a security research organization based in Berkshire that is funded in part (60) the motor insurance industry. He says it would only take him a few minutes to (61) a novice how to steal a car, using a bare minimum of tools. But only if the car is more than 10 years old. Modern cars are a far tougher proposition, as their engine management computer will not (62) them to start unless they receive a unique ID code beamed out by the ignition key. In the UK, technologies like this (63) achieve a 31 per cent drop in vehicle-related crime since 1997. But determined criminals are still managing to find other ways to steal cars. Often by getting hold of the owner's keys in a burglary. In 2000, 12 per cent of vehicles stolen in the UK were taken by using the owner's keys, which doubles the previous year's figure. Remote-controlled immobilization system would (64) a major new obstacle in the criminal's way by making such thefts pointless. A group that includes Thatcham, the police, insurance companies and security technology firms have developed standards for a system that could go on the market sooner than the (65) expects.

单选题Her novel depicts an ambitious Chinese.

单选题There are {{U}}various{{/U}} kinds of food in China. A. lot B. many C. different D. delicious

单选题Bad living conditions Ubreed/U social and welfare problems.

单选题UFortunately/U, when my car broke down in the country, I had my mobile with me.

单选题The dentist has decided to take out the girl's bad tooth. A. dig B. draw C. pull D. extract

单选题The computer performed better than people in the study because

单选题It took me exactly a week to Ucomplete/U the work.

单选题"Copy the ways of nature", we were told. Yes, copy Nature—for everything comes directly or indirectly from natural things. Often we have to put our knowledge to work, treating Nature's materials so as to make them serve our purposes better. We could, certainly, take the skin from a dead animal and at once make a pair of shoes with it; but they wouldn't be very good shoes. For our purpose it is better first to treat the skin with chemicals that turn it into leather. Why is it necessary for us to treat Nature's material?A. An animal's skin is not really useful to us.B. Our purposes can be better served.C. Natural materials are limited.D. It is difficult to copy natur

单选题From my standpoint, you know, this thing is just funny. A. position B. point of view C. knowledge D. opinion

单选题There is more rainfall

单选题A Dolphin and an Astronomer One day in 1963, a dolphin named Elvar and a famous astronomer, Carl Sagan, were playing a little game. The astronomer was visiting an institute which was looking into the way dolphins communicate with each other. Sagan was standing on the edge of one of the tanks where several of these friendly, highly intelligent creatures were kept. Elvar had just swum up alongside him and had turned on his back. The dolphin wanted Sagan to scratch his stomach again, as the astronomer had done twice before. Elvar looked up at Sagan, waiting. Then, after a minute or so, the dolphin leapt up through the water and made a sound just like the word "more". The astonished astronomer went to the director of the institute and told him about the incident. "Oh, yes. That's one of the words he knows," the director said, showing no surprise at all. Dolphins have bigger brains in proportion to their body size than humans have, and it has been known for a long time that they can make a number of sounds. What is more, these sounds seem to have different functions, such as warning each other of danger. Sound travels much faster and much further in water than it does in air. That is why the parts of the brain that deal with sound are much better developed in dolphins than in humans. But can it be said that dolphins have a "language", in the real sense of the word? Scientists don't agree on this. A language is not just a collection of sounds, or even words. A language has a structure and what we call a grammar. The structure and grammar of a language help to give it meaning. For example, the two questions "Who loves Mary?" and "Who does Mary love?" mean very different things. If you stop to think about it, you will see that this difference doesn't come from the words in the question but from the difference in structure. That is why the question "Can dolphins speak?" can't be answered until we find out if dolphins not only make sounds but also arrange them in a grammatical order which affects their meaning.

单选题I soon perceived that I could not change his mind.A. discoveredB. noticedC. sawD. sensed

单选题Please don't refuse his help because he is so kind a man.A. mm downB. go downC. put downD. pull down

单选题On the table was a vase filled with Uartificial /U flowers

单选题Our arrangements were thrown into complete turmoil .

单选题"Salty" Rice Plant Boosts Harvests British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms to become productive once more. Tim Flowers and Tony Yeo, from Sussex University's School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty. The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice. It is estimated that each year more than 10m hectares (公顷) of agricultural land are lost because salt gets into the soil and stunts (妨碍生长) plants. The problem is caused by several factors. In the tropics, mangroves (红树林) that create swamps (沼泽) and traditionally formed barriers to sea water have been cut down. In the Mediterranean, a series of droughts have caused the water table to drop, allowing sea water to seep (渗透) in. In Latin America, irrigation often causes problems when water is evaporated (蒸发) by the heat, leaving salt deposits behind. Excess salt then enters the plants and prevents them functioning normally. Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive. To overcome these problems, Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells but do not affect the plants' growth. They have started to breed these characteristics into a new rice crop, but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use. Once the characteristics for surviving salty soil are known, Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants. Land that has been abandoned to nature will then be able to bloom again, providing much needed food in the poorer countries of the world.