单选题I fell in love with the minister's son in winter when I turned fourteen. He was not Chinese.For Christmas I prayed for the boy, Robert. When I found out that my parents had invited the minister' s family over for Christmas Eve dinner, I cried in panic What would' Robert think of our shabby Chinese Christmas? What would he think of our noisy Chinese relatives who lacked proper American manners? On Christmas Eve, my mother created abundant Chinese food.And then they arrived--the minister' s family and all my relatives.Robert greeted hello, and I pretended he was not worthy of existence. Dinner threw me deeper into disappointment.My relatives licked(舔)the ends of their chopsticks and reached across the table.Robert and his family waited patiently for a large plate to be passed to them.My relatives murmured with pleasure when my mother brought out the whole steamed fish.Robert made a face.Then my father reached his chopsticks just below the fish eye and picked out the soft meat. "Amy, your favorite," he said, offering me the tender fish cheek.I wanted to disappear. At the end of the meal, my father leaned back and burped(打嗝)loudly, thanking my mother for her fine cooking."It's a police Chinese custom to show you are satisfied, "explained my father to our astonished guests.Robert was looking down at his plate with a reddish face.The minister managed to bring up a quiet burp.I was shocked into silence for the rest of the night. After everyone had gone, my mother said to me, "You want to be the shame as American girls on the outside. "She handed me an early gift. It was a miniskirt. "But inside you must always be Chinese. You must be proud you are different. Your only shame is to have shame. " It was not until years later that I was able to fully appreciate her lesson and the purpose behind her particular menu. For Christmas Eve that year, she had chosen excellent Chinese food.

单选题 A rise in standard of living in a country seems to benefit cities more than rural areas. What problems might those differences cause? How can these problems be solved? You are to write your composition in four parts in about 200 words. In the first part, state the gap between the urban cities and rural countries. In the second part, explain why people in rural areas move to large cities and its influences on urban cities. In the third part, state the influences on migrants to large cities and on rural areas. In the last part, state the ways to solve the imbalance. Marks will be awarded for content relevance, content sufficiency, organization and language quality. Failure to follow the above instructions may result in a loss of marks.

单选题Speaker A: Do you mind if I change the channel? Speaker B: ______ A. Actually, I think this program is quite interesting. B. Yes, you can switch to the channel you want to watch. C. Never mind. Just go ahead. D. Certainly. You can do what you like.

单选题Much of the research on hallucinogenic drugs such as LSD has focused on the neurotransmitter serotonin, a chemical that when released from a presynaptic serotonin-secreting neuron causes the transmission of a nerve impulse across a synapse to an adjacent postsynaptic, or target, neuron. There are two major reasons for this emphasis. First, it was discovered early on that many of the major hallucinogens have a molecular structure similar to that of serotonin. In addition, animal studies of brain neurochemistry following administration of hallucinogens invariably reported changes in serotonin levels. Early investigators correctly reasoned that the structural similarity to the serotonin molecule might imply that LSD' s effects arc brought about by an action on the neurotransmission of serotonin in the brain. Unfortunately, the level of technical expertise in the field of brain research was such that this hypothesis had to be tested or, peripheral tissue ( tissue outside the brain). Two different groups of scientists reported than LSD powerfully blockaded serotonin' s action, their conclusions were quickly challenged, however. We now know that the action of a drug at one site in the body does not necessarily correspond to the drug' s action at another site, especially when one site is in the brain and the other is not. By the 1960' s technical advances permitted the direct testing of the hypothesis that LSD and related hallucinogens act by directly suppressing the activity of serotonin secreting neurons themselves—the so called presynaptic hypothesis. Researchers reasoned that if the hallucinogenic drags act by suppressing the activity of serotonin-secreting neurons, then drugs administered after these neurons had been destroyed should have no effect on behavior, because the system would already be maximally suppressed. Contrary to their expectations, neuron destruction enhanced the effect of LSD and related hallucinogens on behavior. Thus hallucinogenic drugs apparently do not act directly on serotonin-secreting neurons. However, these and other available data do support an alternative hypothesis, that LSD and related drugs act directly at receptor sites on serotonin target neurons (the postsynaptic hypothesis). The fact that LSD elicits "serotonin syndrome", that is, causes the same kinds of behaviors as does the administration of serotonin in animals whose brains are depleted of serotonin indicates that LSD acts directly on serotonin receptors, rather than indirectly through the release of stores of serotonin. The enhanced effect of LSD reported after serotonin depletion could be due to a proliferation of serotonin receptor sites on serotonin target neurons. This phenomenon often follows neuron destruction or neurotransmitter depletion; the increase in the number of receptor sites appears to be a compensatory response to decreased input. Significantly, this hypothesis is supported by number of different laboratories,

单选题The scientists have made an ______ study of the viruses that cause the disease.

单选题Some people think ______ about their rights than about their duties. A. too much B. as much C. much more D. many more

单选题You have nothing to ______ by refusing to listen to our advice.

单选题I used to smoke ______ but I gave it up 3 years ago.

单选题Some local companies are making great efforts to ______ with foreign companies for a share of the market.

单选题The manager threw a party______the group of computer experts from the United States.

单选题James: I'm dreadfully sorry, Nit

单选题In view of the depression of the national economy, there are plans to ______, a much greater harvest from the timber resource.

单选题With tears in her eyes, the champion was {{U}}oblivious{{/U}} to the cheering in the stands.

单选题Anyone who______coming to the picnic on Sunday______to bring______own beer and soda.

单选题{{B}}Passage Five{{/B}} The California condor is the largest bird in North America. It is an endangered species. 20 years ago there were less than 30 birds left. All of the birds were trapped and kept in safe places. The number of condors grew larger. Puppets that looked like condors were used to take care of babies so that more eggs could be hatched. In the last few years, some of the condors have been returned to the wild. But they seem to like humans now and come into danger around people. Some birds perch on houses and tear up roofs. Some have even gone into houses. Birds have been shot, poisoned, and killed by power lines. Now there is another problem. Condors find dead animals that hunters have killed. The bullets cause lead to get into the meat and it can kill the condors. Some people think hunters should use different bullets. Other people think that the birds should not be put into the wild.

单选题When I try to understand______that prevents so many Americans from being so happy as one might expect, it seems to me that there are two causes.

单选题I haven"t decided which hotel ______.

单选题Perhaps we should think in terms of raising interest rates ______ them, in consideration of the new reports about inflation reported last June.

单选题This time tomorrow，I_________on the beach，enjoying the sunshine!