单选题It was no surprise when we were told that our grandfather had passed away. A. survived B. gone out C. died D. gone on a trip

单选题If a thing is conspicuous by its absence, it is something that everyone expects to be there. A. noticeable B. necessary C. regrettable D. indifferent

单选题Exercise Lowers Employers" Health Costs Companies can save millions in health-care costs simply by encouraging their employees to exercise a little bit, researchers reported on Friday. They said obese (肥胖的) employees had higher health-care costs, but lowered those expenses by exercising just a couple of times a week — without even losing any weight. Feifei Wang and colleagues at the University of Michigan studied 23,500 workers at General Motors. They estimated that getting the most sedentary (惯于久坐的) obese workers to exercise would have saved about $790,000 a year, or about 1.5 percent of health-care costs for the whole group. Company-wide, the potential savings could reach $7.1 million per year, they reported in the Journal of Occupational and Environmental Medicine. Of the whole group of workers, about 30 percent were of normal weight, 45 percent were overweight (超重的), and 25 percent were obese. Annual health-care costs averaged $2,200 for normal weight, $2,400 for the overweight, and $2,700 for obese employees. But among workers who did no exercise, health-care costs went up by at least $100 a year, and were $3,000 a year for obese employees who were sedentary. But adding two or more days of light exercise — at least 20 minutes of exercise or work hard enough to increase heart rate and breathing — lowered costs by on average $500 per employee a year, the researchers found. "This indicates that physical activity behavior could reduce at least some of the harmful effects of excess body fat, and in consequence, help lower the health-care costs," Wang and colleagues wrote.

单选题Many economists have given in to the fatal Ulure/U of mathematics.

单选题 下面有3篇短文，每篇短文后有5道题，每题后面有4个选项。请仔细阅读短文并根据短文回答其后面的问题。{{B}}第一篇{{/B}} {{B}} Escaping from the Earth{{/B}} The Earth has a force that pulls things toward itself. We call this force gravity(地心引力). This is something we live with all the time, and we take it for granted and hardly ever think about it. But it is a most important factor in rocket operation and must be overcome if we are to get anywhere in space, or off the ground at all. Take the throwing of a ball as an example. The harder the ball is thrown, the faster and higher it will go. What is the secret? Its speed. If we could throw the ball hard enough it would go up and up forever and never come down. The speed at which it would have to be thrown to do this is known as escape speed. Of course, we cannot throw a ball hard enough because the speed required to escape completely from the Earth's gravity is seven miles per second, or over twenty-five thousand miles per hour. Once escape speed has been reached by a spacecraft(宇宙飞船), no further power is needed. A rocket aimed at the Moon, for instance, will "coast"(滑行) the rest of the way because the Earth's gravity cannot then pull it back, and there is no air resistance(阻力) in space to slow it down. This "coasting" is known as "free fall". That does not mean the rocket is falling down towards the Earth but that it is traveling freely in space without the aid of power, like a bicycle coasting downhill. Free fall is an important feature of space travel: it would be impossible to carry enough fuel to provide powered flight all the time.

单选题下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。 Skin Cancer Melanoma (黑素瘤), the deadliest kind of skin cancer, is now the most common cancer in{{U}} (51) {{/U}} British women, the country's leading cancer organization said Wednesday. Skin cancer has {{U}}(52) {{/U}} cervical (子宫颈的) cancer as the top cancer striking women in their 20s, according to the latest data from Cancer Research United Kingdom. The trend is particularly {{U}}(53) {{/U}} since younger people are not generally those most susceptible (易患的) to melanoma. Rates of skin cancer are {{U}}(54) {{/U}} highest in people over age 75. But experts worry that increasing numbers of younger people being diagnosed with skin cancer could be the {{U}}(55) {{/U}} of a dangerous trend. Women in their 20s make {{U}}(56) {{/U}} a small percentage of all patients diagnosed with melanoma in Britain, but nearly a third of all cases occur in people younger than 50. Based on current numbers, Cancer Research UK predicts that melanoma will become the fourth {{U}}(57) {{/U}} common cancer for men and women of all ages by 2024, and that cases will jump from about 9,000 cases a year to more than 15,500. Cancer experts {{U}}(58) {{/U}} the rising number of skin cancer cases largely to the surge in people using tanning salons. "Spending time on sun beds is just as {{U}}(59) {{/U}} as staying out too long in the sun," said Caroline Cerny of Cancer Research UK. The organization is starting a SunSmart {{U}}(60) {{/U}} to warn Britons of the dangers of being too bronzed. "The intensity of ultraviolet rays in some sun beds can be more than 10 {{U}}(61) {{/U}} stronger than the midday sun," Cerny said. In the United States, several states require parental approval {{U}}(62) {{/U}} minors can use tanning salons. Wisconsin bans people 16 and {{U}}(63) {{/U}} from using tanning beds, and others ban children under 14. At least 29 states have regulations governing minors' use of tanning salons. In the U. K. , Scottish politicians passed legislation banning those under 18 from using tanning beds, though it hasn't yet been implemented. There are no plans for {{U}}(64) {{/U}} in the rest of the U. K. The World Health Organization has previously recommended that tanning beds be regulated because of their potential to damage DNA in the skin. Experts said most deadly skin cancers could be {{U}}(65) {{/U}} if people took the proper precautions when in the sun and avoided tanning beds.

单选题Moderate Earthquake Strikes England A moderate earthquake struck parts of southeast England on 28 April 2007, toppling chimneys from houses and rousing residents from their beds. Several thousand people were left without power in Kent County. One woman suffered minor head and neck injuries. "It felt as if the whole house was being slid across like a fun-fair ride," said the woman. The British Geological Survey said the 4.3-magnitude quake struck at 8:19 a.m. and was centered under the English Channel, about 8.5 miles south of Dover and near the entrance to the Channel Tunnel. Witnesses said cracks appeared in walls and chimneys collapsed across the county. Residents said the tremor had lasted for about 10 to 15 seconds. "I was lying in bed and it felt as if someone had just got up from bed next to me," said Hedrick van Eck, 27, of Canterbury about 60 miles southeast of London. "I then heard the sound of cracking, and it was getting heavier and heavier. It felt as if someone was at the end of my bed hopping up and down." There are thousands of moderate quakes on this scale around the world each year, but they are rare in Britain. The April 28 quake was the strongest in Britain since 2002 when a 4.8-magnitude quake struck the central England city of Birmingham. The country"s strongest earthquake took place in the North Sea in 1931, measuring 6.1 on the Richter scale. British Geological Survey scientist Roger Musson said the quake took place on 28 April in an area that had seen several of the biggest earthquakes ever to strike Britain, including one in 1580 that caused damage in London and was felt in France. Musson predicted that it was only a matter of time before another earthquake struck this part of England. However, people should not be scared too much by this prediction, Musson said, as the modern earthquake warning system of Britain should be able to detect a forthcoming quake and announce it several hours before it takes place. This would allow time for people to evacuate and reduce damage to the minimum.

单选题The Usteadily/U rising cost of labor on the waterfront has greatly increased the cost of ship ping cargo by water.

单选题The employee was {{U}}accused of{{/U}} stealing the money.

单选题Sophonisba P. Breckinridge, the first woman admitted to the bar in Kentucky, eventually abandoned her legal career and became a social worker.

单选题Evidently, he has made a big mistake this time.A. likelyB. possiblyC. obviouslyD. simply

单选题Several windows had been Usmashed/U.

单选题She stored a lot of food in the {{U}}basement{{/U}}.

单选题Can you give me a concrete example to support your idea?

单选题下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。 {{B}} Many Women Who Beat Cancer Don't Change Habits{{/B}} Many women who battle breast cancer will tell you it's a life-changing experience. However, a new study shows that for many{{U}} (51) {{/U}}, the changes aren't always positive or permanent. Beth Snoke has watched her mother and both grandmothers battle and survive breast{{U}} (52) {{/U}}.So when she was diagnosed, there was no doubt in her mind{{U}} (53) {{/U}}she had to do. "I do exactly what the doctors say as far as the medicine that I'm on, as{{U}} (54) {{/U}}as the vitamins, the diet, and the fitness. And I can't stress enough{{U}} (55) {{/U}}important that is," says Beth Snoke. But a surprising new study shows that{{U}} (56) {{/U}}every woman who beats breast cancer is getting that message. In fact, nearly 40％ of them say even{{U}} (57) {{/U}}surviving breast cancer, they haven't made significant changes in the{{U}} (58) {{/U}}they eat or how much they exercise. "Not all survivors are taking advantage of this teachable moment and making positive health changes in{{U}} (59) {{/U}}life," says Electra Paskett, PhD, at Ohio State University's Comprehensive Cancer Center. Paskett says diet and exercise have been proven to not only help women feel better during and after treatment, they may{{U}} (60) {{/U}}play a role in preventing some cancers from coming back.{{U}} (61) {{/U}} growing evidence, some women just aren't listening. "Colon cancer survivors{{U}} (62) {{/U}}exercise have actually been shown to have improved survival rates. So, yes, it is true that perhaps by making some of these healthy choices we can actually increase their health," says Paskett. As a breast cancer survivor{{U}} (63) {{/U}}, Paskett knows first hand how much difference diet and exercise can{{U}} (64) {{/U}}. The challenge, she says, is to get more survivors to be more like Beth, during and after treatment. Experts say exercising more and eating a healthier diet can also cut{{U}} (65) {{/U}}on stress and help women overcome depression. There are more than 2 million breast cancer survivors living in the US. Of those, nearly a million have yet to change their diet or exercise routines.

单选题 Many women who battle breast cancer will tell you it's a life-changing experience. However, a new study shows that for many{{U}} (51) {{/U}}, the changes aren't always positive or permanent. Beth Snoke has watched her mother and both grandmothers battle and survive breast{{U}} (52) {{/U}}So when she was diagnosed, there was no doubt in her mind{{U}} (53) {{/U}}she had to do. "I do exactly what the doctors say as far as the medicine that I'm on, as{{U}} (54) {{/U}}as the vitamins, the diet, and the fitness. And I can't stress enough{{U}} (55) {{/U}}important that is," says Beth Snoke. But a surprising new study shows that{{U}} (56) {{/U}}every woman who beats breast cancer is getting that message. In fact, nearly 40% of them say even{{U}} (57) {{/U}}surviving breast cancer, they haven't made significant changes in the{{U}} (58) {{/U}}they eat or how much they exercise. "Not all survivors are taking advantage of this teachable moment and making positive health changes in{{U}} (59) {{/U}}life," says Electra Paskett, PhD, at Ohio State University's Comprehensive Cancer Center. Paskett says diet and exercise have been proven to not only help women feel better during and after treatment, they may{{U}} (60) {{/U}}play a role in preventing some cancers from coming back{{U}} (61) {{/U}} growing evidence, some women just aren't listening. "Colon cancer survivors{{U}} (62) {{/U}}exercise have actually been shown to have improved survival rates. So, yes, it is true that perhaps by making some of these healthy choices we can actually increase their health," says Paskett. As a breast cancer survivor{{U}} (63) {{/U}}, Paskett knows first hand how much difference diet and exercise can{{U}} (64) {{/U}}The challenge, she says, is to get more survivors to be more like Beth, during and after treatment. Experts say exercising more and eating a healthier diet can also cut{{U}} (65) {{/U}}on stress and help women overcome depression. There are more than 2 million breast cancer survivors living in the U.S. Of those, nearly a million have yet to change their diet or exercise routines.

单选题Gunpowder was used extensively in firearms prior to 1990. A. in B. around C. from D. before

单选题The scientist and agricultural innovator George Washington Garver aided the economy of the South by developing hundreds of commercial uses for crops such as the peanut.

单选题It is irritating to be forced to listen to such silly conversation.A. chillyB. annoyingC. accessoryD. furtive

单选题 下面有3篇短文，每篇短文后有5道题，每道题后面有4个选项。请根据文章的内容，从每题所给的4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} {{B}}U.S. States Do Poorly in Women's Health{{/B}} Not a single U.S. state meets basic federal goals for women's health, and the nation as a whole fails except in two areas -- mammograms (乳腺X光照片) and dental (牙齿的) check-ups -- researchers said on Thursday. Millions of women lack health insurance, and states make it difficult to enroll (加入) in Medicaid, the state-federal health insurance plan for the poor, according to the report. And few states are doing anywhere near enough to help women quit smoking -- the leading cause of death in the United States. "The nation as a whole and the individual states fall short of meeting national goals," reads the report, put together by the National Women's Law Center and the Oregon Health & Science University. "These health goals provide a road map for assessing the status of women's health." Of 27 measures examined by the group, from screening for diseases to actually treating them, the nation passes on only two, the researchers said. "The nation is so far from the health goals that it receives an overall grade of 'unsatisfactory'," they wrote. The problem seems to be a lack among states of an overall plan for health in general, the NWLC said. "State policy makers' piecemeal (一件一件做的) approach to our health Care crisis has resulted in a complex and ineffective system that fails to meet the health care needs of women," Judy Waxman, NWLC Vice President for Health, said in a statement. "Lawmakers need to take a comprehensive, long-term approach to meeting women's health needs and tackle this serious problem that troubles so many families."