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.

单选题They refused to acknowledge that they were defeated."

单选题Their style of playing football is utterly different.

单选题We have to act within the existing legal framework .

单选题Although we had quarreled with each other yesterday, she still turned to me for help this morning.

单选题In the Mesozoic period, the upward thrust of great rock masses created the Rocky Mountains and the Alps.A. collisionB. angleC. pushD. erosion

单选题What do you think would be the value of this ring, if I were to sell it?A. costB. priceC. significanceD. importance

单选题Acceptance of Chronic Illness For chronically ill patients, giving up the hope that they will get better may actually lead to more happiness, U.S. researchers suggest. "Hope is an important part of happiness, but there's a dark side of hope. Sometimes, if hope makes people put off getting on with their life, it can get in the way of happiness," Dr. Peter A. Ubel from the University of Michigan Health System said in a university news release. He and his colleagues studied patients who'd just had a colostomy (结肠造口术), which means their colons (结肠) were removed and they had to have howe1 (肠) movements in a pouch (小袋) outside the body. At the time of the surgery, some patients were told the procedure was reversible and they'd have a second operation in a few months to reconnect their bowels. Other patients were told the colostomy was permanent. The patients were followed for six months, and the researchers found that those without hope of regaining normal bowel function were happier than those with reversible colostomies. "We think they were happier because they got on with their life. They realized the cards they were dealt, and recognized that they had no choice but to play with those cards," Ubel said. "The other group was waiting for their colostomy to be reversed. They contrasted their current life with the life they hoped to lead, and didn't make the best of their current situation. " The study, published in the November edition of Health Psychology, also may explain why people whose spouse dies often recover better emotionally over time than those who get divorced, the researchers said. That's because people whose husband or wife dies have closure (结束), while those who get divorced may still have hope for some chance of making up, they explained.

单选题{{B}}第三篇{{/B}} William, who conquered England some 930 years ago, had wealth, power and a ruthless army. Yet although William was stupefyingly rich by the standard of his time, he had nothing remotely resembling a flush toilet. No paper towels, no riding lawn mower. How did he get by? History books are filled with wealthy people who were practically destitute compared to me, I have tripe-tracked storm window; Croesus did not. Entire nations trembled before Alexander the Great, but he couldn't buy cat food in bulk. Czar Nicholas Ⅱ lacked a compound-miter saw. Given how much better off I am than so many famous dead people, you'd think I'd be content. The trouble is that, like most people, I compare my prosperity with that of living persons: neighbors, high-school classmates, TV personalities. The covetousness I feel toward my friend Howard's kitchen is not mitigated by the fact that no French monarch ever had a refrigerator with glass doors. There is really no rising or falling standard of living. Over the centuries people simply find different stuff to feel grumpy about. You'd think that merely not having bubonic plague(腺鼠疫) would put us in a good mood. But no, we want a hot tub too. Of course, one way to achieve happiness would be to realize that even by contemporary standards the things I own are pretty nice. My house is smaller than the houses of many investment bankers', but even so it has a lot more rooms than my wife's and I can keep clean. Besides, to people looking back at our era from a century or two in the future, those bankers' fancy counter tops and my own worn Formica(福米加塑料桌面)will seem equally shabby. I can't keep up with my neighbor right now. but just wait.

单选题It is an inevitable consequence of the decision.