单选题All the flats in the building had the same {{U}}layout{{/U}}. A. color B. arrangement C. size D. function

单选题{{B}}第二篇{{/B}} {{B}}Stress Level Tied to Education Level{{/B}} People with less education suffer fewer stressful days, according to a report in the current issue of the Journal of Health and Social Behavior. However, the study also found that when less-educated people did suffer stress it was more severe and had a larger impact on their health. From this, researchers have concluded that the day-to-day factors that cause stress are not random. Where you are in society determines the kinds of problems that you have each day, and howwell you will cope with them. The research team interviewed a national sample of 1,031 adults daily for eight days about their stress level and health. People without a high school diploma reported stress on 30 percent of the study days, people with a high school degree reported stress 38 percent of the time, and people with college degrees reported stress 44 percent of the time. "Less advantaged people are less healthy on a daily basis and are more likely to have downward tums in their health." lead researcher Dr. Joseph Grzywacz,of Wake Forest University Baptist Medical Center, said in a prepared statement. "The downward tums in health were connected with daily stressors. and the effect of daily stressors on their health is much more devastating for the less advantaged." Grzywacz suggested follow-up research to determine why less-educated people report fewer days of stress when it is known their stress is more acute and chronic. "If something happens every day, maybe it's not seen as a stressor" Grzywacz says. "Maybe it is just life." stressor n.紧张刺激物 devastating adj.毁灭性的 follow-up n. (对病人的)随访

单选题I' m speaking Uon behalf of/U my friend John.

单选题Thursday, the terrible noise was Usubstituted/U by the grim, steady hum of search and recovery.

单选题Credit Card Only Works When Spoken to A credit card that will not work unless it hears its owner"s voice could become an important weapon in the fight against fraud. The card requires users to give a spoken password that it recognizes using a built-in voice—recognition chip. The idea is to prevent thieves using a stolen card or fraudsters using someone else"s credit card details to buy goods online. A model built by engineers at Beepcard in Santa Monica, California, represents the first attempt to pack a microphone, a loud speaker, a battery and a voice-recognition chip into a standard-sized credit card. They are not quite there yet: the card is the length and width of an ordinary credit card, but it is still about three times as thick. Alan Sege, Beepcard"s CEO, says the company now plans to use smaller chips to slim it down to normal thickness. The voice card is based on an earlier Beepcard technology designed to prevent fraud in online transactions. This earlier card has no microphone, but has a built-in loudspeaker that it uses to "squawk" (发出叫声) a voice ID signal via a computer"s microphone to an online server. By verifying (证实) that the signal matches the card details, the server can establish that the user is not simply keying in ... a credit card number but actually has the card to hand. The ID code changes each time the card is used in a pre-ordered sequence that only the server knows. This prevents fraudsters recording the beeps, noting the card details and then playing back the audible ID when the key in the details later. But this earlier technology cannot prevent fraudulent use of stolen cards. The new one can. The new voice card also identifies itself by-its ID squawk, but it will not do this until it has verified the legitimate user"s spoken password. Thieves will be unable to use the card because even if they knew the password they would have to be unable to copy the owner"s voice with a high degree of accuracy. The challenge for Beepcard has been to develop voice—recognition and audio circuitry that can be powered by a mini battery embedded in a credit card. To maximize battery life, the electronics are only switched on when the card is being used. Pressing a button on the card"s surface prompts it to utter "Say your password" in female voice. If the voice-recognition software proves that the password is authentic, it sends its ID squawk which the server then identifies, allowing the transaction to proceed.

单选题What were the effects of the decision she had made?

单选题She found me very {{U}}dull{{/U}}. A. dirty B. sleepy C. lazy D. boring

单选题 阅读下面这篇短文，短文后列出了7个句子，请根据短文的内容对每个句子作山判断。如果该句提供的是正确信息，请选择A项；如果该句提供的是错误信息，请选择B项；如果该句的信息文章中没有提及，请选择C项。 {{B}}Bees and Color{{/B}} On our table in the garden we put a blue card, and all around this blue card we put a number of different gray cards. These gray cards are of all possible shades of gray land include white and black. on each card a watch-glass is placed .The watch-glass on the blue card has some syrup (果汁) in it; all the others are empty. After a short time bees find the syrup, and they come for it again and again. Then, after some hours, we take away the watch-glass of syrup which was on the bluecard and put an empty one in its place. Now what do the bees do? They still go straight to the blue card, although there is no syrup there. They do not go to any of the gray cards, in spite of the fact that one of the gray cards is of exactly the same brightness as the blue card. Thus the bees do not mistake any shade of gray. for blue. In his way we have proved that they do really see blue as a color. We can find out in just the same way what other colors bees can see. It turns out that bees can see various colors, but these insects differ from us as regards their color-sense in two very interesting ways. Suppose we train bees to come to a red card, and, having done so, we put the red card on the table in the garden among the set of different gray cards. This time we find that the bees mistake red for dark gray or black. They cannot distinguish between them. This means that red is not a color at all for bees; for them it is just dark gray or black. That is one strange fact; here is another. A rainbow is red on one edge, violet on the other. Outside the violet of the rainbow there is another color which we cannot see at all. This color beyond the violet, invisible to us, is called the ultra-violet. Although it is invisible, we know that the ultra -violet is there because it affects a photographic plate. Now, although we are unable to see ultra -violet light, bees can do so; for them ultra -violet is a colon Thus bees see a color which we cannot even imagine. This has been found out by training bees to come for syrup to various parts of a spectrum, or artificial rainbow, thrown by a prism on a table in a dark room. In such an experiment the insects can be taught to fly to the ultra-violet, which for us is just darkness.

单选题More than one-third of the Chinese in the United States live in California, predominantly in San Francisco.

单选题Eleanor Roosevelt urged legislation to assist the poor and oppressed.

单选题This gold mine was discovered by accident.A. by airB. by chanceC. at largeD. at ease

单选题 Earth Rocks on Most of the time, the ground feels solid beneath our feet. That's comforting. But it's also misleading because there's actually a lot going on underground. Masses of land (called plates) slip, slide, and bump against each other, slowly changing the shape of continents and oceans over millions and billions of years. Scientists know that Earth formed about 4.5 billion years ago. They also know that our planet was hot at first. As it cooled, its outermost layer, called the crust (地壳), eventually formed moving plates. Exactly when this shift happened, however, is an open question. Now, an international group of researchers has an answer. They've found new evidence suggesting that Earth's crust started shifting at least 3.8 billion years ago. The new estimate is 1.3 billion years earlier than previous ones. Not long before 3.8 billion years ago, lots of asteroids (小行星) were hitting Earth, keeping its crust in a hot, melted state. After the hard crust formed, much of it sank at various times into the planet's hot insides. There, it melted before returning to the surface. In some places, however, the crust never sank. One of the oldest such places is in Greenland, in an area called the lsua supracrustal (上地壳) belt. The rocky crust there is between 3.7 and 3.8 billion years old. The belt was once part of the seafloor, but now it is exposed to air. The researchers recently took a close look at the lsua supracrustal belt. They noticed long, parallel cracks in the rock that have been filled in with a type of volcanic rock. To explain this structure, the scientists propose that tension in the crust caused the seafloor to crack open long ago. Hot, liquid rock, called magma (岩浆), flowed up slowly from deep inside Earth to fill the cracks. Finally, the whole area cooled, forming what we see today. That explanation, plus chemical clues inside the rock, suggests that the lsua supracrustal belt was once part of a plate under the ocean, beginning around 3.8 billion years ago.

单选题A gift to the United States from France, the Statue of Liberty was assembled and dedicated in 1886.

单选题The carelessnesshas somebad effects on his showA. scoresB. resultsC. influencesD. luck

单选题The new credit card that is being introduced by Greenpeace is net made of plastic.

单选题It's no using trying to speak to her this morning: she's Uin a mood/U.

单选题Have you talked to her lately? A. lastly B. finally C. shortly D. recently

单选题The chemical is deadly to rats but safe to cattle.

单选题Cheating deserves our harshest condemnation .

单选题Mother Nature Shows Her Strength Tornadoes(龙卷风)and heavy thunderstorms moved across the Great Lakes and into Trumbull County on Saturday evening. The storms were dramatic and dangerous. George Snyder was driving the fire truck down Route 88 when he first noticed that a funnel (漏斗状的)cloud was behind him. "I stopped the truck and watched the funnel cloud. It was about 100 feet off the ground and I saw it go up and down for a while. It was moving toward Bradley Road and then suddenly it disappeared. "Snyder said. Snyder only saw one of the funnel clouds that passed through northeastern Ohio on Saturday. In Trumbull County, a tornado turned trees onto their sides. Some trees fell onto houses and cars. Other trees fell into telephone and electrical wires as they went down. Amanda Sym check was having a party when the storm began. "I knew something was wrong, "he said. "I saw the sky go green and pink(粉红色). Then it sounded like a train rushing toward the house. I started crying and told everyone to go to the basement for protection. " The tornado causeda 10 to damage to cars and houses in the area. It will take a longtime and much money to repair everything. There was also serious water damage from the thunderstorms. The heavy rains and high wind caused the power to go out in many homes. The storms caused serious flooding in areas near the river. More than four inches of rain fell in parts of Trumbull County. The river was so high that the water ran into streets and houses. Many streets had to be closed to Cars and trucks because of the high water. This made it difficult for fire trucks, police Cars, and other rescue vehicles to help people who were in trouble. Many people who live near the river had to leave their homes for their own safety. Some people reported five feet of water in their homes. Local and state officials opened emergency shelters for the people who were evacuated(撤走). The Red Cross served meals to them. "This was a really intense storm, "said Snyder. "People were afraid. Mother Nature can be fierce. We were lucky this time. No one was killed/