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  3. Drug use is rising dramatically among the nation’s youth after a decade of decline. From 1993 to 1994, marijuana use among young

Drug use is rising dramatically among the nation’s youth after a decade of decline. From 1993 to 1994, marijuana use among young

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问题     Drug use is rising dramatically among the nation’s youth after a decade of decline. From 1993 to 1994, marijuana use among young people (1)_____ from 12 to 17 jumped 50 percent. One in five high school seniors (2)_____ marijuana daily. Monitoring the Future, which (3)_____ student drug use annually, reports that negative attitudes about drugs have declined for the fourth year in a row. (4)_____ young people see great risk in using drugs. Mood-altering pharmaceutical drugs are (5)_____ new popularity among young people. Ritalin, (6)_____ as a diet pill in the 1970s and now used to (7)_____ hyperactive children, has become a (8)_____ drug on college campuses. A central nervous system (9)_____, Ritalin can cause strokes, hypertension, and seizures. Rohypnol, produced in Europe as a (10)_____ tranquilizer, lowers inhibitions and suppresses short-term memory, which has led to some women being raped by men they are going out with. (11)_____ taken with alcohol, its effects are greatly (12)_____. Rock singer Kurt Cobain collapsed from an (13)_____ of Rohypnol and champagne a month before he committed (14)_____ in 1994. In Florida and Texas, Rohypnol has become widely abused among teens, who see the drug as a less expensive (15)_____ for marijuana and LSD. Alcohol and tobacco use is increasing among teenagers, (16)_____ younger adolescents. Each year, more than one million teens become regular smokers, (17)_____ they cannot legally purchase tobacco. By 12th grade, one in three students smokes. In 1995, one in five 14-year-olds reported smoking regularly, a 33 percent jump (18)_____ 1991. Drinking among 14-year-olds climbed 50 percent from 1992 to 1994, and all teens reported substantial increases in (19)_____ drinking. In 1995, one in five 10th graders reported having been drunk in the past 30 days. Two-thirds of high school seniors say they know a (20)_____ with a drinking problem.
选项 A、When
B、As
C、though
D、while
答案A
解析 语篇连贯。根据语篇，此处表达时间观念，when和分词结构搭配。该句意思是，把Rohypnol和酒精一起用，其药效会大大加强。
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考研英语一

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