单选题The National Safety Council urges drivers and passengers to wear seat belts as a {{U}}warning{{/U}} against injury.

单选题Rodman met with Tony to try and settle the dispute over his contract.

单选题If we leave now, we should miss the traffic jam.

单选题What makes a mayor successful in Los Angeles is the strength of his public support. A. concentration B. intensity C. conservation D. stress

单选题You must shine your shoes.

单选题Going on a Diet A typical person needs about 1, 800 calories per day to stay alive. These calories keep your heart 1 and your lungs breathing. They keep your organs operating 2 and your brain running. They also keep your body warm A. person 3 weight because he or she consumes more calories per day than needed. The only way to lose fat is to 4 the number of calories that you consume per day. This is the basic 5 behind going on a diet. 6 , diets don"t work for most people. They do lose weight but then 7 the diet and put it back. Building a sensible diet and exercise plan is the key to 8 a consistent weight. You need to figure out how many calories you need in a day and how many you 9 take in. The next step is to add exercise so that you can 10 the number of calories you can consume per day. Exercise charts can show you how many calories different 11 of exercise can burn. Burning 250 or 800 calories per day can 12 , a big difference. You can ride an exercise bike while you are watching TV or you can 13 the stairs instead of the elevator. Find an exercise 14 . Exercise can be a lot easier if there is someone to talk to. It"s a good idea to wear firm-fitting clothes if you are on a diet. 15 clothing acts as a reminder of what you are trying to accomplish.

单选题At the meeting both sides exchanged their views on a wide scope of topics they were interested in.

单选题After careful consideration, he decided to give up the idea.A. mentionB. acceptC. considerD. drop

单选题A will is a document written to ensure that the wishes of the deceased are realized.

单选题Scientists Develop Ways of Detecting Heart Attack German researchers have (51) a new generation of defibrillators and early-warning software aimed at offering heart patients greater protection (52) sudden death from cardiac arrest. In Germany alone around 100,000 people die annually as a result of cardiac arrest and many of these cases (53) by disruption to the heart's rhythm. Those most at risk are patients who have (54) suffered a heart attack, and for years the use of defibrillators has proved useful in intervening within seconds. These devices (56) a range of functions, such as that of pacemaker. Heart specialists at Freiburg's University Clinic have now achieved a breakthrough with an implanted defibrillator (57) of generating a six-channel electrocardiogram (ECG) within the body. This integrated system allows early diagnosis of (58) blood-flow problems and a pending heart attack. It will be implanted in patients for the first time this year. Meanwhile, researchers at the Fraunhofer Institute for Applied Mathematics in Kaiserslautern have developed new computer software that renders of ECG data (59) The overwhelming (60) of patients at risk will not have an implanted defibrillator and must for this reason undergo regular ECGs. "Many of the current programs only (61) into account a linear correlation of the data. We are, however, making use (62) a non-linear process that reveals the chaotic patterns of heart beats as an open and complex system," Hagen Knaf says, " (63) changes in the heart beats over time can be monitored and individual variations in patients taken into account. " An old study of ECG data, based (64) 600 patients who had suffered a subsequent heart attack, enabled the researchers to compare risks and to show (65) the new software evaluates the data considerably better.

单选题The expedition reached the summit at 10:30 that morning.

单选题The idea of not having to get up early every morning is rather {{U}}appealing{{/U}} to me.

单选题Our lives are intimately bound up with theirs.

单选题The history of the exploration of Antarctica recounts many tales of perseverance and suffering.A. enduranceB. skillC. generosityD. disturbance

单选题In 1861 it seemed Uinevitable/U that the Southern states would break away from the Union.

单选题She seemed to have {{U}}detected{{/U}} some anger in his voice. A. noticed B. heard C. realized D. got

单选题The manager allocate duties to the clerks.A. assignB. persuadeC. askD. order

单选题{{B}}第二篇{{/B}} {{B}} TV Goes Digital{{/B}} Coming soon to your TV: views of the hottest live basketball plays from any seat in the stadium. What a better look at that three-point shot? Call for a replay from behind the basket. Or better yet, follow the "view" of the ball as it goes through the net. While watching, you might use a built-in speakerphone to talk with a fan in the stands. Or send the score via e-mail to your father in Japan. Sounds impossible? It won't be when the computerized television industries combine to create digital TV-machines that receive, send, store, and manipulate TV programs the way computers now manipulate other data. Industry and government representatives recently reached an agreement on how this technology will take place. New digital TVs that allow current TVs to receive digital signals may hit stores by next spring. To understand how the digital revolution will change the way you watch TV it helps to know how TVs work now. Today, TV networks such as CBS and Fox broadcast TV shows as analogue electrical signals. These signals travel via the airwaves, satellites, or cable as a continuous stream of electromagnetic energy(like light and radio waves). But this system leaves a lot of room for error. The main problem is that interference can change the voltage of the signal as it travels. This may result in a distorted or miscolored picture. If we send out the signal in a form that is nearly free from interference-binary(两位数的)code, pictures and colors are not distorted. You'll need to buy a new TV to receive these signals. And the new sets may cost 1,000 US dollars more than today's TVs. But they'll come with other benefits that may make the price worthwhile. For one thing, the screens will be wider, like movie screens. In addition, the color will be richer. And you'll also get digital CD-quality sound. Besides these benefits, digital TVs can offer you a much wider choice of programs. Digital data can expand TV choices because computers can compress digital signals. Broadcasters will be able to send six times as much information on the same "channel".

单选题Come out, or I’ll （bust） the door down.

单选题Packaging Packaging is a very important form of advertising. A package can sometimes motivate people to buy products. For example, a little child might ask for a breakfast food contained in a box with a picture of a TV character. The child is more interested in the picture than in breakfast food. Pictures for children to color or cut out, games printed on a package, or a small gift inside a box also motivate many children to buy products or to ask their parents to buy for them. Some packages suggest that a buyer will get something for nothing. Food products sold in reusable containers are examples of this. Although a similar product in plain container might cost less, people often prefer to buy the product in a reusable glass or dish, because they believe the container is free. However, the cost of the container is added to the cost of the product. The size of a package also motivates a buyer. Maybe the package has "Economy Size" or "Family Size" printed on it. This suggests that the larger size has the most product for the least money. But that is not always true. To find it out, a buyer has to know how the product is sold and the price of the basic unit. The information on the package should provide some answers. But the important thing for any buyer to remember is that a package is often an advertisement. The words and pictures do not tell the whole story. Only the product inside can do that.