单选题 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.

【正确答案】 A
【答案解析】[解题思路] 动词搭配。aged表示“年龄在……”,做表语;aged from...to...意为“年龄在……之间”,又如:Our classmates are aged from 19 to 22 years old.(我们同学的年龄在19到 22岁之间)。
【正确答案】 B
【答案解析】[解题思路] 动词辨析和搭配。smoke和marijuana构成动宾搭配,意为“吸食大麻”;taste意为“品尝”;inject意为“注射”;take意为“摄取”。
【正确答案】 C
【答案解析】[解题思路] 动词辨析。study意为“研究,学习”;research意为“研究,科研”;survey意为“调查”;examine意为“检查”。根据上下文可以知道,Monitoring the Future是一个调查机构,它每年都对学生的吸毒问题进行调查,survey符合题意。
【正确答案】 C
【答案解析】[解题思路] 上下文逻辑。根据上下文,调查结果显示,学生对毒品的负面态度连续四年呈下降趋势,意味着越来越少的年轻人认识到吸毒的危害性,[C]符合题意。
【正确答案】 D
【答案解析】[解题思路] 动词辨析和搭配。retain意为“保持,保留”;attain意为“获得,得到”;maintain意为“保持,维护”;gain意为“获得”。gain和popularity构成搭配,意为“受到欢迎”,因此选[D]。
【正确答案】 B
【答案解析】[解题思路] 动词辨析。describe意为“描述”;prescribe意为“开处方”;inscribe意为“在某物上写或题字”;instruct意为“指导”。此处retalin作为一种处方药,因此选prescribe。
【正确答案】 A
【答案解析】[解题思路] 动词辨析。treat意为“治疗”;cure意为“治愈”;diagnose意为“诊断”;test意为“测试”。根据文章,retalin被用来治疗患多动症的儿童,treat为最佳答案。
【正确答案】 C
【答案解析】[解题思路] 形容词辨析。amusing意为“好笑的,有趣的”;relaxing意为“放松的”;recreational意为“娱乐的”;pleasant意为“令人愉快的”;根据文章,retalin本来被用来治疗患多动症的儿童,但是在20世纪70年代被学生用于娱乐。[C]为最佳答案。
【正确答案】 B
【答案解析】[解题思路] 名词辨析和搭配。中枢神经系统的刺激剂是stimulant,为专业术语。stimulus意为“刺激物,激励措施”;excitement意为“兴奋”;encouragement意为“鼓励”。
【正确答案】 D
【答案解析】[解题思路] 形容词辨析。镇静剂(tranquilizer)是合法的,例如,rohypnol在欧洲就是一种合法的镇静剂,符合题意。valid意为“有效的”;formal意为“正式的”;popular意为“流行的”。
【正确答案】 A
【答案解析】[解题思路] 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。
【正确答案】 D
【答案解析】[解题思路] 动词辨析和搭配。enlarge意为“扩大”,指大小和空间的扩大;confirm意为“证实”;exaggerate意为“夸大,夸张”;magnify意为“增强,放大”。增强药效应选magnify。
【正确答案】 B
【答案解析】[解题思路] 名词辨析。摇滚歌星Kurt Cobain身体垮掉就是因为服用了过量的rohypnol和香槟,药物剂量过大是overdose。overtake意为“追上,超过”,是动词;abuse意为“滥用”; overuse意为“过度使用”。
【正确答案】 C
【答案解析】[解题思路] 动词辨析和搭配。此处指摇滚歌星Kurt Cobain自杀身亡,英语表达为commit suicide。murder意为“凶杀”;crime意为“犯罪”;kill意为“杀害”。
【正确答案】 A
【答案解析】[解题思路] 名词搭配和辨析。substitute意为“替代,替代物”,和for搭配;replacement意为“替换”,和of搭配;exchange意为“交流,交换”,和between搭配;interchange意为“相互交换”,和between搭配。[A]为最佳答案。
【正确答案】 B
【答案解析】[解题思路] 语篇连贯。teenagers和younger adolescents构成语义上的递进,符合题意。 specially意为“特别地”;mostly意为“多数地”;actually意为“实际上”。
【正确答案】 A
【答案解析】[解题思路] 语篇连贯。根据语篇,该句的前后两个部分为让步关系,意思是:每年有一百多万年轻人经常吸烟,虽然他们还没有达到合法购买烟草的年龄,[A]符合题意。
【正确答案】 C
【答案解析】[解题思路] 介词搭配。since和1991搭配,意思是自1991年以来上涨了33%.
【正确答案】 D
【答案解析】[解题思路] 形容词辨析和搭配。drinking和heavy搭配,意为“饮酒过量,酗酒”,又如: heavy smoking(吸烟过量)。serious意为“严重的,严肃的”;severe意为“严厉的,严重的”; grave意为“严重的”。
【正确答案】 B
【答案解析】[解题思路] 名词辨析。该句意思是,三分之二的高中高年级学生说,他们周围的同龄人有酗酒问题,peer(同龄人)为最佳选择。