题目内容

精度为0.02mm的游标卡尺，当游标卡尺读数为30.42时，游标上的第（）格与主尺刻线对齐。

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胸腔引流应选用

A. 纱布引流
B. 皮片引流
C. 乳胶管引流
D. 双套管引流
E. 闭式引流

关于拆线描述，正确的是

A. 应在术后1周内拆线
B. 老年动物应适当提前拆线
C. 创口化脓后不能拆线
D. 拆线过程中应消毒两次
E. 应靠近结处剪短缝线

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.

A. even though
B. as if
C. as long as
D. as soon as

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.

A. student
B. man
C. youth
D. peer