单选题The economic reform in that country has been accelerated.A. speeded upB. put offC. slowed downD. stopped

单选题It is Upostulated/U that population trends have an effect on economic fluctuations.

单选题A hundred years ago many kids died at an early age.

单选题After 1850, various states in the United States began to pass {{U}}compulsory{{/U}} school attendance laws. A. harsh B. diversified C. mandatory D. complicated

单选题If no one objects, Mr. Ben will be the next chairman.A. disagreesB. approvesC. rejectsD. refuses

单选题UEnormous/U sums of money have been spent on space exploration.

单选题The great change of the city astonished all the visitors. A. surprised B. scared C. excited D. moved

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，从4个选项中选择1个最佳答案。{{B}}第一篇{{/B}} There seems to be a close relationship between drinks and one's life. The adolescent(少年)usually loves soft drinks for their sweetness and variety. He knows nothing of sadness and his taste of life is sweetness to the exclusion of all the others. In his eyes, the world is full of facets just as soft drinks are varied in flavor. Youth sees him on a job or in love. Now, soft drinks will have to give way to coffee, which is bitter yet somewhat sweet and fragrant. It gives a stimulating sensation suggestive of maturity, appealing to him, as he is fickle and moody. At his stage, he begins his career full of ambition and ideals, on the other hand he also needs and aspires after a home of his own. However, either his work or his love affairs may bring small setbacks, for which he is sometimes seen forcing a tearful smile and sometimes smiling through his tears. Considerations of gains and losses seem to him an enjoyment as well as a torture. Middle age turns him to Chinese tea that gives a delicate fragrance very gradual to come out, only discernable off and on. It is bland an elegant, deep and profound. It never stimulates your sense of taste but a lip of it will leave a faint fragrance lingering in your mouth, Free from impractical longings and fully aware of the evanescent of the sunset, he cherishes every minute of the day and each day of his is sweetened with a simple but real happiness. The elderly drinks plain boiled water which is devoid of saccharin, caffeine or theophyline (茶碱). It tastes insipid yet a slow sipping will doubtless yield a wee bit of sweetness. He has been tossed in life's storms and taught by rough and bitter experience to know better than to care about glories and successes which appear to him now as transient as a fleeting cloud. For this is the time he can sit comfortable in an armchair letting his mind wander. All that happened in the past and all that exist in the world seem to him as plain and insipd as water...

单选题Jane's {{U}}unusual{{/U}} behavior puzzled her parents.

单选题Irish Dolphins may Have a Unique Dialect Irish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other. The Shannon Dolphin and Wildlife Foundation (SDWF) has been studying a group of up to 120 bottle-nose dolphins in the River Shannon using vocalizations collected on a computer in a cow shed near the River Shannon. As part of a research project, student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated them into six fundamental whistle types and 32 different categories. Of the categories, he found most were used by both sets of dolphins but eight were only heard from the Irish dolphins. "We are building up a catalogue of the different whistle types they use and trying to associate them with behavior like foraging, resting, socializing and the communications of groups with calves," project leader Simon Berrow said. "Essentially we are building up what is like a dictionary of words they use or sounds they make." Berrow, a marine biologist, said the dolphins' clicks are used to find their way around and locate prey. The whistles are communications. "They do a whole range of other sounds like barks, groans and a kind of gunshot," he said. "The gunshot is an intense pulse of sound. Sperm whales use it to stun their prey." "When I first heard it I was surprised as I thought sperm whales were the only species who used it. We can speculate the dolphins are using it for the same reason as the sperm whales," Berrow said. References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been resident there as far back as the 6th century. They are regularly seen by passengers on the Shannon ferry and an estimated 25,000 tourists every year take special sightseeing tours on local boats to visit them.

单选题{{B}}第三篇{{/B}} {{B}} Losing Weight{{/B}} Girls as young as 10 years old are dieting and in danger of developing unhealthy attitudes about weight, body image and food, a group of Toronto researchers reported Tuesday. Their study of 2,279 girls aged 10 to 14 showed that while the vast majority had healthy weights, nearly a third felt they were overweight and were trying to lose pounds. Even at the tender age of 10, nearly 32 per cent of girls felt "too fat" and 31 per cent said they were trying to diet. McVey, a researcher at the Hospital for Sick Children in Toronto, and her colleagues analyzed data collected in a number of surveys of southern Ontario school girls between 1993 and 2003, reporting their findings in Tuesday's issue of the Canadian Medical Association Journal. Nearly 80 per cent of the girls had a healthy body weight and only 7.2 per cent were considered overweight using standard weight-to-height ratios. Most researchers suggest the rate of overweight children in this country is several times higher than that figure. Nearly 30 per cent of the girls reported they were currently trying to lose weight, though few admitted to dangerous behavior such as self-induced vomiting. Still, a test that measured attitudes towards eating showed 10.5 per cent of survey participants were already at risk of developing an eating disorder. "We're not talking about kids who've been prescribed a diet because they're above average weight or overweight. We're talking about children who are within a healthy weight range. And they have taken it upon themselves to diet to lose weight." McVey said, acknowledging she found the rates disturbing. She said striking a balance between healthy weights and healthy attitudes towards food and body image is a complex task, with no easy solutions. overweight adj. 超重的; 过重的 induce vt. 引起,导致 prescribe vt.处方;开药;嘱咐

单选题His professional career spanned 16 years.

单选题Multivitamins Urged for All Pregnant Women A recent study in Tanzania found that when pregnant women took vitamins every day, fewer babies were born too small. Babies that weigh less than two and one-half kilograms at birth have a greater risk of dying. Those that survive are more likely to experience problems with their development. And experts say that as adults they have a higher risk of diseases including heart disease and diabetes. The World Health Organization estimates that every year twenty million babies are born with low birth weight. Nine out of ten of them are born in developing countries. The new study took place in Dar es Salaam. 4,200 pregnant women received multivitamins. The pills contained all of the vitamins in the B group along with vitamins C and E. They also contained several times more iron and folate than the levels advised for women in developed nations. Pregnant women especially in poor countries may find it difficult to get enough vitamins and minerals from the foods in their diet. The scientists compared the findings with results from a group of 4,000 women who did not receive the vitamins. A report by the scientists, from the United States and Tanzania, appeared in the New England Journal of Medicine. Wafaie Fawzi of the Harvard University School of Public Health led the study. None of the women in the study had HIV, the virus that causes AIDS. The scientists reported earlier that daily multivitamins were a low-cost way to reduce fetal deaths in pregnant women infected with HIV. The earlier work in Tanzania also found improvement in the mothers in their number of blood cells known as lymphocytes. Lymphocytes increase the body's immunity against infection. The new study in pregnant women who were not infected with the AIDS virus found that multivitamins reduced the risk of low birth weight. Just under eight percent of the babies born to women who took the multivitamins weighed less than 2,500 grams. The rate was almost nine and one-half percent in the group of women who received a placebo, an inactive pill, instead of the vitamins. But the vitamins did not do much to reduce the rates of babies being born too early or dying while still a fetus. Still, the researchers say multivitamins should be considered for all

单选题Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first endeavor .

单选题 A Health Profile A health profile is a portrait of all of the factors that influence your health. To draw your health profile, you will {{U}} {{U}} 1 {{/U}} {{/U}}what diseases run in your family, what health hazards you may be exposed to {{U}} {{U}} 2 {{/U}} {{/U}}work, how your daily {{U}} {{U}} 3 {{/U}} {{/U}}compares to the recommended standards, how much time per week you {{U}} {{U}} 4 {{/U}} {{/U}}exercising and what type of exercise you engage {{U}} {{U}} 5 {{/U}} {{/U}}, how stressful your work and family environments are, what kinds of illnesses you get regularly, and {{U}} {{U}} 6 {{/U}} {{/U}}or not you have any one of a number of addictions. {{U}} {{U}} 7 {{/U}} {{/U}}this portrait, you should have a checkup to determine how your blood, heart, and lungs are functioning. This checkup will serve {{U}} {{U}} 8 {{/U}} {{/U}}a baseline, to which you can then compare later tests. {{U}} {{U}} 9 {{/U}} {{/U}}this profile is thoroughly drawn, you can begin to think about setting health priorities based {{U}} {{U}} 10 {{/U}} {{/U}}your particular portrait. For example, if you drink two martinis every evening, have a high-stress {{U}} {{U}} 11 {{/U}} {{/U}}, are overweight, smoke a pack of cigarettes a day, and use marijuana occasionally on weekends, you should quit smoking first, followed {{U}} {{U}} 12 {{/U}} {{/U}}losing the excess weight, reducing the stress of your job, giving up your marijuana habit, and then finally giving some {{U}} {{U}} 13 {{/U}} {{/U}}to those martinis if you want to prevent first cancer, and then heart disease. Even for the youthful working person who has never been sick a day in his life, who is {{U}} {{U}} 14 {{/U}} {{/U}}excellent health, a good look at all health habits and at work and home environments may suggest changes that will {{U}} {{U}} 15 {{/U}} {{/U}}him in the future.

单选题According to Paragraph 1, you could only tell whether you are really brave by

单选题It is absurd to go out in such terrible weather.

单选题Annual renewal is automatic.A. every weekB. every monthC. every yearD. everyday

单选题Three hours later he Uconfessed/U that he had been involved in the attack.

单选题There is been competition between the two Motor car firms. A. cooperation B. contest C. dispute D. conference