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Passage ThreeQuestions 32 to 35 are based on the passage you have just heard,

A. High school teachers.
B. Taxi drivers.
C. Waiters.
D. Fruit sellers,

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When risk of death from heart attack is plotted on a graph against alcohol consumption, studies consistently show a U-shaped curve, which suggests that non-drinkers and heavy drinkers have higher rates of heart disease than light to moderate drinkers. The implication is that moderate drinking offers protection from heart disease. For years, doctors believed that the death rate among people who do not drink at all was artificially high because it included a substantial number of reformed drinkers, irreparably damaged by alcohol. However, more recent studies which separate life-long drinkers from abstainers have shown that abstainers are still at high risk. Studies have shown that moderate drinkers have higher levels of high-density lipoproteins (脂蛋白) in their blood. This is the "good" cholesterol that protects against heart disease. Alcohol also appears to reduce the risk of heart diseases. Though drinking alcohol in moderation undoubtedly brings some benefits, it is important not to play down the dangers of heavy drinking. Alcohol is related to a string of health problems including cirrhosis (硬化) of the liver, cancer of the mouth, high blood pressure and hemorrhage stroke. Some people believe that wine, in particular, has additional beneficial properties that set it apart from other alcoholic drinks. The French have significantly less heart disease than does any other industrialized nation except Japan. For example, in Toulouse, France, the annual heart disease death rate per 100,000 men is 78--barely a fifth of the number in Glasgow, Scotland. French doctors believe that the low rate of heart disease is a result of the fact that the French consume large quantities of wine. The relationship between alcohol consumption and the risk of developing cancer has also been studied. Population studies suggest that people who drink moderately are at less risk than those who do not drink at all. Again, wine may be largely responsible for the benefits. Other research suggests that drinking moderate amounts of alcohol also reduces the risk of catching everyday infections like colds. A recent study showed that drinking two units of alcohol dally can halve susceptibility to infections. Which of the following is the substance mentioned that helps to protect against heart disease

A. Lipoproteins.
B. Cholesterol.
C. Both.
D. Neither.

患者女性,25岁。牙龈和鼻出血7d入院。睑结膜及甲床苍白,四肢和躯干皮肤可见出血点和瘀斑。血红蛋白52g/L,白细胞 31×109/L,血小板20×109/L,血涂片可见大量幼稚细胞,细胞质中有大量紫红色颗粒,而且可见紫红色棒状物。最可能的诊断是

A. 急性早幼粒细胞白血病
B. 再生障碍性贫血
C. 急性粒细胞白血病
D. 原发性血小板减少性紫癜
E. 急性淋巴细胞白血病

目前,P2P网络存在______、分布式非结构化、分布式结构化和混合式4种结构类型。

The Chinese New Year is a big traditional holiday in Singapore. On its Eve, while many will (67) for the reunion dinner, others will head for the airport or train station to "flee" (68) such festivities. With a (69) number of Singaporeans going on overseas tours during this time, the Chinese New Year holiday has in recent years become a (70) season for travel agents, (71) it Used to be a lull period for them. Isn’t Chinese New Year the (72) important traditional festival for the Chinese Well, for those who choose to (73) flight, it means an opportunity to enjoy a holiday out of the country. The concern is, if even Chinese New Year can be (74) , what other traditional festivals cannot be disregarded Why do we need to (75) traditional festivals Firstly, they are inseparable from our ethnic identity. The Chinese, Malays and Indians all have their own traditional festivals (76) which they derive "a sense of belonging to a particular community". So if any Chinese does not see himself (77) one, there is no need for him to celebrate any Chinese festivals. True, everyone has the right to (78) traditions. The problem is: you cannot deny your ethnic origins or change your skin color. We are (79) with a certain skin color which cannot be "bleached"—if one has a "yellow face" and yet refuse to (80) with the Chinese, who else can he or she identify with Secondly, the (81) spirit of the more than 2000-year-old Chinese New Year is closely intertwined with the traditional culture and values of the Chinese. (82) its core is the Confucian value of good interpersonal relationships. Traditional Chinese festivals (83) center on maintaining and improving human relations. Reunion dinner helps to (84) family ties while the exchange of gifts and greetings enhance relations among friends. To skip the reunion dinner and stay (85) from Chinese New Year means losing many great opportunities to forge stronger kinship and friendship ties. A tradition must be capable of being (86) down from one generation to another. Yet this does not mean traditions cannot be changed.

A. superficial
B. marginal
C. essence
D. fundamental

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