If you think getting a certificate means getting a job, you are __ yourself. A.

A . discount B . recession C . depression D . discharge

A . view B . sight C . vision D . sightseeing

Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age, and how the process of ageing could be slowed down. With a team a colleague (同事) at Tokyo National University, he set about measuring brain volumes of a thousand people of different ages and varying occupations. " Computer technology enabled the researchers to obtain precise (精确的) measurements of the volume of the front and side sections of the brain, which relate to intellect (智能) and emotion, and determine the human character. " The rear section of the brain, which controls functions like eating and breathing, does not contract with age, and one can continue living without intellectual or emotional facilities. Contraction of front and side parts—as cells die off—was observed in some subjects in their thirties, but it was still not evident in some sixty- and seventy-year-olds. Matsuzawa concluded from his tests that there is a simple remedy to the contraction normally associated with age—using the head. The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns. Those least at risk, says Matsuzawa, are lawyers, followed by university professors and doctors. White collar workers doing routine work in government offices are, however, as likely to have shrinking brains as the farm workers, bus drivers and shop assistants. Matsuzawa's findings show that thinking can prevent the brain from shrinking. Blood must circulate properly in the head to supply the fresh oxygen the brain cells need. "The best way to maintain good blood circulation is through using the brain, " he says, "Think hard and engage in conversation. Don't rely on pocket calculators. The team of doctors wanted to find out______. A．how to make people live longer B．the size of certain people's brains C．which people are most intelligent D．why certain people age sooner than others

A．To call the airline to confirm two months before the departure. B．To call your family and discuss about it together. C．To call the airline to confirm one month ahead of the departure. D．To call the travel agency to confirm three weeks before the departure.

W: You don't have to wait Until Saturday. Right here, in this office, the dean has maps, bus schedules and even a list of inexpensive hotels. They're for foreign students, you know. Q: Where did this conversation most probably take place？ (19) A．This conversation was at the airport. B．They were eating lunch and talking in a restaurant. C．This took place in a college information office. D．They were at the dean's home.

A．positive B．negative C．indifferent D．critical

A. about B. on C. from D. for

Question 1 to 5 are based on the following passage. If you think a high-factor sunscreen(防晒霜)keeps you safe from harmful rays, you may be wrong. Research in this week&39;s Nature shows that while factor 50 reduces the number of melanomas(黑瘤)and delays their occurrence, it can&39;t prevent them. Melanomas are the most aggressive skin cancers. You have a higher risk if you have red or blond hair, fair skin, blue or green eyes, or sunburn easily, or if a close relative has had one. Melanomas are more common if you have periodic intense exposure to the sun. Other skin cancers are increasingly likely with long-term exposure. There is continuing debate as to how effective sunscreen is in reducing melanomas—the evidence is weaker than it is for preventing other types of skin cancer. A 2011 Australian study of 1,621 people found that people randomly selected to apply sunscreen daily had half the rate of melanomas of people who used cream as needed. A second study, comparing 1,167 people with melanomas to 1,101 who didn&39;t have the cancer, found that using sunscreen routinely, alongside other protection such as hats, long sleeves or staying in the shade, did give some protection. This study said other forms of sun protection—not sunscreen—seemed most beneficial. The study relied on people remembering what they had done over each decade of their lives, so it&39;s not entirely reliable. But it seems reasonable to think sunscreen gives people a false sense of security in the sun. Many people also don&39;t use sunscreen properly-applying insufficient amounts, failing to reapply after a couple of hours and staying in the sun too long. It is sunburn that is most worrying-recent shows five episodes of sunburn in the teenage years increases the risk of all skin cancers. The good news is that a combination of sunscreen and covering up can reduce melanoma rates, as shown by Australian figures from their slip-slop-slap campaign. So if there is a heat wave this summer, it would be best for us, too, to slip on a shirt, slop on(抹上)sunscreen and slap on a hat. 1.What is people&39;s common expectation of a high-factor sunscreen？ A.It will delay the occurrence of skin cancer. B.It will protect them from sunburn. C.It will keep their skin smooth and fair. D.It will work for people of any skin color. 2.What does the research in Nature say about a high-factor sunscreen？ A.It is ineffective in preventing melanomas. B.It is ineffective in case of intense sunlight. C.It is ineffective with long-term exposure. D.It is ineffective for people with fair skin. 3.What do we learn from the 2011Australian study of 1,621 people？ A.Sunscreen should be applied alongside other protection measures. B.High-risk people benefit the most from the application of sunscreen. C.Irregular application of sunscreen does women more harm than good. D.Daily application of sunscreen helps reduce the incidence of melanomas. 4.What does the author say about the second Australian study？ A.It misleads people to rely on sunscreen for protection. B.It helps people to select the most effective sunscreen. C.It is not based on direct observation of the subjects. D.It confirms the results of the first Australian study. 5.What does the author suggest to reduce melanoma rates？ A.Using both covering up and sunscreen. B.Staying in the shade whenever possible. C.Using covering up instead of sunscreen. D.Applying the right amount of sunscreen.

A．withhold B．withdraw C．wither D．withstand

A．By telephone. B．By letter. C．By Internet. D．In person.

W: But flying makes me so nervous. Q: What does the woman prefer？ (14) A．Taking a train. B．Feeling nervous. C．Taking a plane. D．Traveling with her friends.

If you try to learn too many things at a time, you may get (confuse) ______ .

A．lose B．to lose C．losing D．lost