单选题It is obvious that he will win the game. A．likely B．possible C．clear D．probable

单选题Don't Uhazard/U your reputation by supporting his joint venture with the gay from Los Angels.

单选题Her specialty is heart surgery. A. region B. site C. field D. platform

单选题The word "lands" in the last sentence could best be replaced by

单选题The Case of the Disappearing Fingerprints One useful anti-cancer drug can effectively erase the whorls(萝状指纹)and other characteristic marks that give people their distinctive fingerprints．Losing them could become troublesome．A case (51) online in a letter by Annals of Oncology indicates how big a (52) losing finger prints is． Eng-Huat Tan，a Singapore-based medical doctor describes a 62-year-old man who has used capecitabine(卡培他滨)to (53) his nasopharyngeal cancer(鼻咽症)．After three years on the (54) ，the patient decided to visit his U．S．relatives last December．But he was stopped by U．S． customs officials (55) 4 hours after entering the country when those officials couldn't get finger prints from the man．There were no (56) swirly(旋涡状的)marks appearing from his index fin ger． U．S．customs has been fingerprinting incoming foreign visitors for years，Tan says．Unfortunately， for the Singaporean traveler，one potential (57) effect of his drug treatment is a smoothing of the tissue on the finger pads． (58) ，no fingerprints． “It is uncertain when fingerprint (59) will begin to take place in patients who are taking capecitabine，”Tan points out．So he (60) any physicians who prescribe the drug to provide their patients with a doctor's (61) pointing Out that their medicine may cause fingerprints to disappear． Eventually，the Singaporean traveler made it into the United States．But he's also now got the explanatory doctor's note-and won't leave home (62) it． By the way，maybe the Food and Drug Administration， (63) approved use of the drug 11 years ago，should consider updating its list of side effects (64) with this medicine．The current list does note that patients may experience vomiting(呕吐)，stomach pain and some other side effects． But no where (65) it mention the potential for loss of fingerprints．

单选题Mary has made up her mind not to go to the meeting. A．tried B．promised C．decided D．attempted

单选题第三篇 Young Female Chimps Outlearn Their Brothers Young female chimps are faster and better learners than young male chimps, suggest a new study, echoing learning differences seen in human girls and boys. While young male chimps pass their time playing, young female chimps car)fully study their mothers. As a result, they learn how to fish fortasty termite snacks over two years before the boys. Elizabeth Lonsdorf, now at Lincoln Park Zoo in Chicago, US, and colleagues at the University of Minnesota, Saint Paul, spent four years. Watching how young chimpanzees in the Gombe National Park in Tanzania4 learned "cultural behavior". The sex differences in learning behavior were "consistent and strikingly apparent", says the team. The researchers point out that similar differences are seen in human children with regard to skills such as writing. "A sex—based learning differences may therefore date back at least to the last common ancestor of chimpanzees and humans, "they write in the journal Nature. Chimps make flexible tools: from vegetation and then insert them into termite mounds extract them and then munch the termites clinging onto the tool. The researchers used video cameras to record this feeding behavior and found that each chimp mother had her own technique. Such as how she used tools of different lengths. Analysis of the six infants whose ages were known showed that girl chimps were an average of 31 months old when they succeeded in fishing out their termites. Where the boy chimps were aged 58 months on average. Females were also more skillful at getting out more termites with every dip and used techniques similar to their mothers while males did not. Instead of studying their mothers, the boy chimps spent a significantly greater amount of time frolicking around the termite mound. Behaviors such as playing or swinging might help the male infants later in life when typically male activities like hunting or fighting for dominance become important, suggest the researchers. Lonsdorf adds that there are just two main sources of animal protein for chimps—the termites or colobus monkeys. "Mature males often hunt monkeys up flees. But females are almost always either pregnant or burdened with a clinging infants. This makes hunting difficult," she says. "Adult females spend more time fishing for termites than males." So becoming proficient at termite fishing could mean adult females eat better, "They can watch their offspring at the same time. The young of both sexes seem to pursue activities related to their adult sex roles at a very young age."

单选题France"s renewal of the nuclear testing in the South Pacific last month triggered political debates and mass demonstration.

单选题They always Umock/U me because I am ugly.

单选题 Common-cold Sense You can't beat it, but you don't have to join it. Maybe it got the name "common cold" because it's more common in winter. The fact is, though, being cold doesn't have anything to do with getting one. Colds are caused by the spread of rhinoviruses, and, at least so far, medical science is better at telling you how to avoid getting one than how to get rid of one. Children are the most common way cold viruses are spread to adults, because they have more colds than adults—an average of about eight per year. Why do kids seem so much more easily to get colds than their parents? Simple. They haven't had the opportunity to become immune to many cold viruses. There are more than 150 different cold viruses, and you never have the same one twice. Being infected by one makes you immune to it—but only it. Colds are usually spread by direct contact, not sneezing or coughing. From another person's hand to your hand and then to your nose or eyes is the most common route. The highest concentration of cold viruses anywhere is found under the thumbnails of a boy, although the viruses can survive for hours on skin or other smooth surfaces. Hygiene is your best defense. Wash your hands frequently, preferably with a disinfectant soap, especially when children in your household have colds. But even careful hygiene won't ward off every cold. So, what works when a coughing, sneezing, runny nose strikes? The old prescription of two aspirins, lots of water, and bed rest is a good place to start. But you'll also find some of the folk remedies worth trying. Hot mixtures of sugar (or honey), lemon, and water have real benefits.

单选题The travelers were ready to enjoy the spectacular tidal waves when suddenly a thick fog came up and obscured the whole scene.

单选题I am feeling{{U}} a lot{{/U}} more healthy than 1 was．

单选题Trees, shrubs, flowers, and grass give character and interest to the parks.

单选题{{B}}第三篇{{/B}} {{B}} Almost Human?{{/B}} Scientists are racing to build the world's first thinking robot. This is not science fiction: some say they will have made it by the year 2020. Carol Packer reports. Machines that walk, speak and feel are no longer science fiction. Kismet is the name of an android (机器人) which scientists have built at the Massachusetts institute of Technology (MIT). Kismet is different from the traditional robot because it can show human emotions. Its eyes, ears and lips move to show when it feels happy, sad or bored. Kismet is one of the first of a new generation of androids -- robots that look like human beings -- which can imitate human feelings. Cog, another android invented by the MIT, imitates the action of a mother. However, scientists admit that so far Cog has the mental ability of a two-year-old. The optimists (乐观主义者) say that by the year 2020 we will have created humanoids (机器人) with brains similar to those of an adult human being. These robots will be designed to look like people to make them more attractive and easier to sell to the public. What kind of jobs will they do? In the future, robots like Robonaut, a humanoid invented by NASA, will be doing dangerous jobs, like repairing space stations. They will also be doing more and more of the household work for us. In Japan, scientists are designing androids that will entertain us by dancing and playing the piano. Some people worry about what the future holds: Will robots become monsters (怪物)? Will people themselves become increasingly like robots? Experts predict that more and more people will be wearing micro-computers, connected to the Internet in the future. People will have micro-chips in various parts of their body, which will connect them to a wide variety of gadgets (小装置). Perhaps we should not exaggerate (夸大) the importance of technology, but one wonders whether, in years to come, we will still be falling in love, and whether we will still feel pain. Who knows?

单选题Rumors began to {{U}}circulate{{/U}} about his financial problems. A. send B. spread C. hear D. confirm

单选题Hearing problems may be alleviated by changes in diet and exercise habits. A．removed B．cured C．worsened D．relieved

单选题Amanda Symcheck was having a party in the basement when the storm began.

单选题阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从 4个选项中选择1个最佳答案。 {{B}} Earth's Inner Core{{/B}} Scientists have long struggled to understand what lies at the planet's center. Direct observation of its center is impossible, so researchers must {{U}}(51) {{/U}} to other evidence. In 1889, a German scientist detected a severe earthquake in Japan. Geophysicists concluded that shock waves {{U}}(52) {{/U}} jolts (晃动) from one side of Earth through the center to the other side. Then in 1936, Danish geophysicist lnge Lehmann studied the waves' {{U}}(53) {{/U}} to determine that within Earth's core of molten (熔化了的) iron lies a solid inner core - but {{U}}(54) {{/U}} that core was made of eluded (难倒) her. Other geophysicists quickly determined that Lehmann's inner core was composed mostly {{U}}(55) {{/U}} iron. Since then, Lehmann's discovery has {{U}}(56) {{/U}} conventional Earth science. But now scientists are challenging traditional theory with new and radical {{U}}(57) {{/U}}. For example, Earth's center could actually contain an "inner core within the inner core," claim Ishii and colleague Adam Dziewonski. Analyzing hundreds of thousands of earthquake wave {{U}}(58) {{/U}}, they maintain that the inner core has at its heart a tiny, even more solid sphere (球体). This sphere "may be the oldest fossil {{U}}(59) {{/U}} from the formation of Earth," says Dziewonski. Dziewonski and Ishii speculate that shortly {{U}}(60) {{/U}} Earth formed around 4.8 billion years ago, a giant asteroid (小行星) smashed into the young planet and nearly melted it. But Earth's center didn't quite melt; it {{U}}(61) {{/U}} mass as the planet cooled. The core within a core may be the kernel (核心) that endured. "its presence could change our basic ideas about the {{U}}(62) {{/U}} of the planet," Dziewonski says. Dziewonski's idea is tame (温和的) compared to the {{U}}(63) {{/U}} theories of independent geophysicist J. Marvin Herndon. Earth's inner core is made not of iron, he claims, but a {{U}}(64) {{/U}} of nickel and silicon. Herndon has a truly revolutionary notion: Within the nickel silicide (硅化物) inner core is also an "inner" inner core - an 8 km-wide ball of the element uranium. Uranium is radioactive. Herndon thinks the uranium releases heat energy as its atoms {{U}}(65) {{/U}} fission-split and crash into one another in a chain reaction. In other words, we may live on top of a gigantic, "natural" nuclear power plant.

单选题Relief workers were shocked by what they saw. A. moved B. touched C. surprised D. worried