单选题Either dye or oil paints ______ to color the materials for making clothes in that factory.

单选题 So what is depression? Depression is often more about anger turned{{U}} (1) {{/U}}than it is about sadness. But it's usually{{U}} (2) {{/U}}as sadness. Depression can{{U}} (3) {{/U}}at all ages, from childhood to old age, and it's the United States' No. 1{{U}} (4) {{/U}}problem. When someone is depressed, her behavior{{U}} (5) {{/U}}change and she loses interest in activities she{{U}} (6) {{/U}}enjoyed (like sports, music, friendships). The sadness usually lasts every day for most of the day and for two weeks or more. What{{U}} (7) {{/U}}depression? A{{U}} (8) {{/U}}event can certainly bring{{U}} (9) {{/U}}depression, but some will say it happens{{U}} (10) {{/U}}a specific cause. So how do you know if you're just having a bad day{{U}} (11) {{/U}}are really depressed? Depression affects your{{U}} (12) {{/U}}, moods, behavior and even your physical health. These changes often go{{U}} (13) {{/U}}or are labeled{{U}} (14) {{/U}}simply a bad case of the blues. Someone who's truly{{U}} (15) {{/U}}depression will have{{U}} (16) {{/U}}periods of crying spells, feelings of{{U}} (17) {{/U}}(like not being able to change your situation) and{{U}} (18) {{/U}}(tike you'll feel this way forever), irritation or agitation. A depressed person often{{U}} (19) {{/U}}from others, Depression seldom goes away by itself, and the greatest{{U}} (20) {{/U}}of depression is suicide. The risk of suicide increases if the depression isn't treated.

单选题It is so heavy that it can only be lifted with our ______ effort.

单选题{{B}}D{{/B}} One of the qualities that most people admire in others is the willingness to admit one's mistakes. It is extremely hard sometimes to say a simple thing like "I was wrong about that," and it is even harder to say, "I was wrong, and you were right about that." I had an experience recently with someone admitting to me that he had made a mistake fifteen years ago. He told me he had been the manager of a certain store in the neighborhood where I grew up; and he asked me if I remembered the egg cartons (in many countries, eggs are sold by the dozen and are put in cartons). Then he related an incident(event, matter)and I began to remember unclearly the incident he was describing. I was about eight years old at the time. I went into the store with my mother to do some shopping. On that particular day, I must have found my way to the food department where the incident took place. There must have been a special sale on eggs that day because there were lots of eggs in dozen and half-dozen cartons. The cartons were put three or four feet high. I must have stopped in front of the piles of egg cartons. Just then a woman came by pushing her shopping cart and knocked off the cartons. For some reason, I decided it was up to me to put the eggs back together, so I went to work. The manager heard the noise and came rushing over to see what had happened. When he appeared, I was on my knees looking at some of the cartons to see if any of the eggs were broken, but to him it looked as though I was the one who just did it. He severely reprimanded me and wanted me to pay for any broken eggs. I tried to explain, but it did no good. Even though I quickly forgot all about the incident, it is plain that the manager did not.

单选题The recordings differ from written stories in that ______.

单选题During the construction of skyscrapers, cranes are used to______ building materials to the upper floors.(2011年四川大学考博试题)

单选题Biologists have made a lot of progress in understanding ageing. They have not, however, been able to do much about slowing it down. A piece of work reported in this week's Nature by Darren Baker, though, describes an extraordinary result that points to a way the process might be improved. Dr Baker has shown— in mice, at least—that ageing body cells not only suffer themselves, but also have adverse effects on otherwise healthy cells around them. If such ageing cells are selectively destroyed, these adverse effects go away. The story starts with an observation that senescent cells often produce a molecule called P16INK4A. Dr Baker genetically engineered a group of mice that were already quite unusual. They had a condition called progeria, meaning that they aged much more rapidly than normal mice. The extra tweak he added to the DNA of these mice was a way of killing cells that produce P16INK4A. He did this by inserting into the animals' DNA, near the gene for P 16INK4A, a second gene that was, because of this proximity, controlled by the same genetic switch. This second gene, activated whenever the gene for P16INK4A was active, produced a protein that was harmless in itself, but which could kill the senescent cells by the presence of a particular drug. The results were spectacular. Mice given the drug every three days from birth suffered far less age-related body-wasting than those which were not. Their muscles remained plump and effective. And they did not suffer cataracts of the eye. They did, though, continue to experience age-related problems in tissues that do not produce P16INK4A as they get old. In particular, their hearts and blood vessels aged normally. For that reason, since heart failure is the main cause of death in such mice, their lifespans were not extended. Regardless of the biochemical details, the most intriguing thing Dr Baker's result provides is a new way of thinking about how to slow the process of ageing—and one that works with the grain of nature, rather than against it. Actually eliminating senescent cells may be a logical extension of the process of shutting them down, and thus may not have adverse consequences. It is not an elixir of life, for eventually the body will run out of cells, as more and more of them reach their Hayflick limits. But it could be a way of providing a healthier and more robust old age than people currently enjoy. Genetically engineering people in the way that Dr Baker engineered his mice is obviously out of the question for the foreseeable fixture. But if some other means of clearing cells rich in P 16INK4A from the body could be found, it might have the desired effect. The wasting and weakening of the tissues that accompanies senescence would be a thing of the past, and old age could then truly become ripe.

单选题Woman: Professor Smith, I really need the credits to graduate this summer.Man: Here in this school: the credits are earned, not given.Question: What do we learn from the conversation?

单选题Man: I have to phone my secretary before we leave. Woman: There is not much time. Maybe you"d better get Tom to phone for you. Question: What does the woman mean?

单选题One of the first known methods of advertising is the outdoor ______ . A．display B．Journey C．exercise D．adventure

单选题Language, culture, and personality may be considered ______ of each other in thought, but they are inseparable in fact.(2010年厦门大学考博试题)

单选题Which of the following is the organization of the passage?

单选题It seems to me that you have been______your studies recently.

单选题The role of American women______significantly from the time the nation was born, to the modern era of the 1950s and 1960s.

单选题When you are in your room, leave the door ______ so that your visitors do not have to knock. A. open B. opened C. opening D. being open

单选题The main impact the Telecommunications Act of 1996 had on radio was to______.

单选题 {{B}}Directions: {{/B}} There are ten short incomplete dialogues between two speakers, each followed by four choices marked A, B, C and D. Choose the answer that appropriately suits the conversational context and best completes the dialogue. Mark your answer on the {{B}}ANSWER SHEET{{/B}} by drawing with a pencil a short bar across the corresponding letter in the brackets.

单选题The construction of the building ______ by the end of this month. A. will have completed B. will have been completed C. will be completed D. will completed

单选题When my son started going to "school" full time in February, I readied myself for immunological battle. Day-care kids get sicker than children who stay at home, and I knew mine" would, too. But other parents assured me that by kindergarten he"d be the healthiest kid in class. Last week parenting message boards lit up when a University of California, Berkeley, researcher presented unpublished data showing that children who attend playgroups or day care have a 30 percent lower risk of developing childhood leukemia than kids who don"t, possibly because they are exposed to more infections early in life. The human immune system is an elegant mix of two parts—a built-in, or innate, system and an acquired one. The innate system has already read the manual on generic germs. The acquired system, by contrast, is a bookworm, reading on the go,, learning with every new microbial visitor and growing wiser as it ages. Together, the two systems assess the foods we eat, the particles we breathe, the bacteria we touch, then determine whether or not to attack. Can a young immune system handle so much new information? Research published over the past decade is reassuring. Scientists at the University of Arizona found that 2-year-olds who attend day care in the first six months of life have almost twice as many colds as stay-at-home kids. But they have a third fewer colds between the ages of 6 and 11. By 13, there"s no difference in the groups, suggesting that the kids" immune systems catch up with each other. Several studies have found that children who go to day care early in life are also less likely to develop asthma. The Arizona scientists discovered that high-risk children who start day care before 3 months old have lower levels of immunoglobutin E—a marker of allergic susceptibility connected to asthma-than non-day-care kids. Those levels remain low for the first three years of life. Anne Wright, the study"s lead author, says this doesn"t necessarily mean that kids benefit from being sick more often. She believes the findings support the "hygiene hypothesis," which suggests that simply being exposed to more microbes—which run rampant at day care—educates the immune system, making it less likely to launch unwarranted warfare. All this is good to know. But I had to ask the experts: why am I getting: so sick? "Because you live with the source," says Liu. And I hug and kiss him a lot, too, so I"m probably getting a big dose of germs. It"s also possible that my immune system"s memory has faded a bit, making old harmless viruses look new and dangerous. Or I may be meeting bugs my immune system has never seen before. The most comforting words I heard were from Columbia University pediatrician Philip L. Graham Ⅲ, who told me that pediatricians get horribly sick during their first year of treating patients. After that, they"re immunological powerhouses.