单选题
An overwhelming
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to drink alcohol,
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it is causing harm, is a disease called alcoholism. Alcohol is a drag. In the United States alcoholism is the most widespread form of
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abuse,
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at least 5 million persons.
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one third of high-school students in the United States are
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to be problem drinkers. Many already may be alcoholics. Drunk drivers
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one half of all fatal automobile
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each year in the United States. Drinking is a
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cause of loss of income and of social and personal problems.
Alcoholism also creates many severe
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problems. More than three drinks a day over even a few weeks causes
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changes in the liver. (One ounce [30 milliliters] of hard liquor, 4 ounces [118 milliliters] of wine, or 12 ounces [355 milliliters] of beer are
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considered one drink. ) About 15 percent of heavy drinkers
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cirrhosis, which can be
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Changes in the brain and nervous system
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hostile behavior, loss of mental
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, and poor judgment.
One third of the babies born to mothers who drink
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, especially during the first trimester, have birth
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or retardation. This condition is called fetal alcohol syndrome. Some drugs, such as tranquilizers, when
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with alcohol can result in death. Sexual potency and sperm count are greatly
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in alcoholic men, and alcoholic women often produce no fertile eggs.
【答案解析】[解析] 本题是语义题,意思是说:大约三分之一的美国中学生被认为是问题酗酒者。应当使用被动语态,选项A首先可以排除。选项C be about to是表示“打算做某事”,选项B be expected to表示被期望或渴望做某事,选项D be thought to be...表示“被认为是…”,为本题正确答案。
【正确答案】
B
【答案解析】[解析] 文章是要表达酒后驾车的司机占美国每年所有严重的机动车事故的一半。选项A add to表示“增加”,选项C amount如果与介词to搭配表示“总计”,选项D sum up表示总结,均不适合文章的意思,只有选项B account for表示“占…”为本题的正确答案。