单选题I know people who find it practically impossible to give up smoking.

单选题She {{U}}gave up{{/U}} her job and started writing poetry.

单选题Preventing Child Maltreatment Child maltreatment is a global problem with serious life-long consequences. There are no reliable global estimates for the prevalence of child maltreatment. Data for many countries especially low-and-middle-income countries, are lacking. Child maltreatment is complex and difficult to study. Current estimates vary widely depending on the country and the method of research used. Nonetheless, international studies reveal that approximately 20 % of women and 5-10 % of men report being sexually abused as children. While 25-50 % of all children report being physically abused. Additionally, many children are subject to emotional abuse (sometimes referred to as psychological abuse). Every year, there are an estimated 31,000 homicide deaths in children under 15. This number underestimates the true extent of the problem, as a significant proportion of deaths due to child maltreatment are incorrectly attributed to falls, bums and drowning. Child maltreatment causes suffering to children and families and can have long-term consequences. Maltreatment causes stress that is associated with disruption in early brain development. Extreme stress can impair the development of the nervous and immune systems. Consequently, as adults, maltreated children are at increased risk for behavioral, physical and mental health problem. Via the behavioral and mental health consequences, maltreatment can contribute to heart disease, cancer, suicide and sexually transmitted infections. Beyond the health consequences of child maltreatment, there is an economic impact, including cost of hospitalization, mental health treatment, child welfare, and longer-term health cost. A number of risk factor for child maltreatment have been identified. These risk factors are not present in all social and cultural contexts, but provide an overview when attempting to understand the causes of child maltreatment. It is important to emphasize that children are the victims and are never to blame for maltreatment. A number of characteristics of an individual child may increase the likelihood of being maltreated, such as being either under four years old or an adolescent, being unwanted, or failing to fulfill the expectations of parents and having special need, crying persistently or having abnormal physical features

单选题An educationist should understand children's psychology very well. A. mind B. heart C. brain D. physics

单选题The movie has a satisfying ending.

单选题Keep your room {{U}}tidy{{/U}}. A.messy B.organized C.beautiful D.neat

单选题Unlike gases, liquids are difficult to compress because there is practically no free space between molecules.

单选题3. A Gay Biologist Molecular (分子的) biologist Dean Hammer has blue eyes ,light brown hair and a good sense of humor. He smokes cigarettes, spends long hours in an old laboratory at the US National Institute of Health. He also happens to be openly, matter - of - factly gay. What is it that makes Hammer who he is? What accounts for the talents and traits that make up anyone's personality? Hammer is not content merely to ask such questions; he is trying to answer them as well. A pioneer in the field of molecular psychology, Hammer is exploring the role genes play in governing the very core of our individuality. To a remarkable extent, his work on what might be called the gay, thrill--seeking and quit--smoking genes reflects how own genetic predispositions(倾向). That work, which has appeared mostly in scientific journals, has been gathered into an accessible and quite readable form in Hammer' s creative new book, Living with Our Genes. "vou have about as much choice in some aspect of your personality. "Hamer and co - author Peter Copeland write in the introductory chapter, "as you do in the shape of your nose or the size of your feet. " Until recently, research into behavioral genetics was dominated by psychiatrists and psychologists, who based their most conclusions about the importance of genes on studies of identical twins. For example, psychologist Michael Bailey of Northwestern University famously demonstrated that if one identical twin is gay, there is about a 50% likelihood that the other will be too. Seven years ago. Hamer picked up where the twin studies left off, homing in on (目标追踪) specific strips of DNA that appear to influence everything from mood to sexual orientation. Hamer switched to behavioral genetics from basic research, "after receiving his doctorate from Harvard, he spent more than a decade studying the biochemistry of a protein that cells use to metabolize (使新陈代谢) heavy metals like copper and zinc. As he was about to turn 40, however, Hamer Suddenly realized he had learned as much about the protein as he cared to. "Frankly, I was bored, "he remembers, "and ready for something new. /

单选题The land crab a forest-floor scavenger native to tropical America, migrates to the water to breed.A. dieB. swimC. mateD. hatch

单选题What can you do to ensure that you will stay healthy?A. be assuredB. insistC. proveD. secure

单选题{{B}}第二篇{{/B}} {{B}} Need for Emphasis on Treatment{{/B}} AIDS programs in developing countries put little emphasis on treatment, the World Health Organization said Tuesday, asking for more small community-based clinics to be opened to treat HIV-infected people. An estimated 36 million to 46 million people are living with AIDS, two-thirds of them in Africa, but only 440,000 people in developing countries were receiving treatment by the end of 2003, the UN health agency said in its annual report. "Without treatment, all of them will die a premature and in most cases painful death," the WHO said in the t69-page World Health Report. WHO Director General Lee Jong wook said community-based treatment should be added to disease prevention and care for suffers in AIDS programs. "Future generations will judge our time in large part by our response to the AIDS disease," Lee said. "By tackling it decisively we will also be building health systems that can meet the health needs of to- day and tomorrow. This is a historic opportunity we cannot afford to miss, "he adds. Antiretroviral drugs enable people hit by AIDS to live longer. The annual cost of treatment, which was about $ 10,000 when the drugs were first developed, has dropped to about $150. Treatment programs also help AIDS prevention efforts, the report said, citing great demands for testing and counseling where treatment has been made available. Good counseling in turn leads to more effective prevention in those who are uninfected, and significantly reduces the potential for HIV carriers to pass on the infection, the report said. Since its discovery in 1980s, more than 20 million have died of AIDS, mostly in poor countries.

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，清根据短文的内容从4个选项中选择1个最佳答案。 {{B}} A Biological Clock{{/B}} Every living thing has what scientists call a biological clock that controls behavior. The biological clock{{U}} (1) {{/U}}plants when to form flowers and when the flowers should open. It tells insects when to{{U}} (2) {{/U}}the protective cocoon (防护卵袋) and fly away, and it tells animals and human beings when to eat, sleep and wake. Events outside the plant and animals{{U}} (3) {{/U}}the action of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur because of the{{U}} (4) {{/U}}of hours of daylight. In the short{{U}} (5) {{/U}}of winter, its fur becomes white. The fur becomes gray brown in{{U}} (6) {{/U}}in the longer hours of daylight in summer. Inner signals control other{{U}} (7) {{/U}}clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration{{U}} (8) {{/U}}twice each year, Birds{{U}} (9) {{/U}}from flying become restless when it is time for the trip,{{U}} (10) {{/U}}they become calm again when the time of the flight has ended. Scientists say they are beginning to learn which{{U}} (11) {{/U}}of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain{{U}} (12) {{/U}}to control the timing of some of our actions. These{{U}} (13) {{/U}}tell a person when to wake, when to{{U}} (14) {{/U}}, and when to seek food. Scientists say there probably are other biological clock cells that{{U}} (15) {{/U}}other body activities.

单选题The parents always restrain their daughter from swimming in the nearby pool.A. allowB. reduceC. preventD. confine

单选题Respect for life is a cardinal principle of the law.

单选题A greatdeal has been done to remedy the situation.

单选题Hitchhiking When l was in my teens(十几岁) and 20s, hitchhiking was a main form of long-distance trans port. Tire kindness or curiosity of strangers (51) me all over Europe, North America, Asia and southern Africa. Some of the lift-givers became friends, many provided hospitality (52) the road. Not only did you find out much more about a country than (53) traveling by train or plane, but also there was that element of excitement about where you would finish up that night. Hitchhiking featured importantly in Western culture. It has books and songs about it. So what has happened to (54) ? A few years ago, I asked the same question about hitchhiking in a column on a newspaper. (55) of people from all over the world responded with their view on the state of hitchhiking. "If there is a hitchhiker's (56) it must be Iran," came one reply. Rural Ireland was recommended as a friendly place for hitchhiking, (57) was Quebec, Canada "if you don't mind being berated (严厉指责) for not speaking French. But while hitchhiking was clearly still alive and well in many parts of the world, the (58) feeling was that throughout much of the west it was doomed (消亡). With so much news about crime in tire media, people assumed that anyone on the open road without the money for even a bus ticket must present a danger. But do we (59) to be so wary both to hitchhike and to give a lift? In Poland in the 1960s, (60) a Polish woman who e-mailed me, " the authorities introduced tire Hitchhiker's Booklet. The booklet contained coupons for drivers, so each time a driver (61) somebody, he or she received a coupon. At the end of the season, (62) who had picked up the most hikers were rewarded with various prizes. Everybody was hitchhiking then. " Surely this is a good idea ['or society. Hitchhiking would increase respect by breaking down (63) between strangers. It would help fight (64) warming by cutting down on fuel consumption as hitchhikers would be using existing fuels. It would also improve educational standards by delivering instant (65) in geography, history, polities and sociology.

单选题The ATMs enable bank customers to access their money 24 hours a day and seven days a week ______ ATMs are located.A. whereverB. wheneverC. howeverD. whatever

单选题Mary has derived a good deal of benefit from her job.

单选题According to the last paragraph, tissue’s lower exposure to alcohol

单选题I don't feel {{U}}secure{{/U}} when I am alone in the house.