可以平衡PH值的精油有（）A、柠檬 B、葡萄柚 C、薄荷 D、迷迭香 E、玫瑰

意识固然对客观物质世界具有反作用，但这种反作用是以客观物质世界的先在性为前提。它为外部物质世界所限定，只能实现于物质世界及其规律所允许的范围；它必须借助于物质力量，通过物质性的实践活动才能实现。而且，这种反作用不过是改变了物质的存在形态，不是脱离和超越物质世界的凭空创造。这就在意识的反作用问题上坚持了唯物主义一元论。

对这段话理解不正确的是（）。

A．意识是人脑对物质世界的反映

B．意识对物质世界具有巨大的反作用

C．意识反作用的范围为物质世界所限定

D．物质和精神是统一的，精神是物质的产物，物质在一定程度上也是精神的产物

某厂油污法兰损坏需维修。维修钳工甲将带有污油底阀的污油管线放入污油池内，当时污油池液面高度为500cm，上面浮有30cm的浮油。在液面上的100cm处需对法兰进行更换，班长乙决定采用对接焊接方式。电焊工内去办理动火票，钳工甲见焊工丙办理动火手续迟迟没回，便开始焊接，结果发生油气爆炸，钳工甲掉入污油池死亡。

根据以上场景，回答下列问题

防止触电的安全对策措施主要有( )。

A．接零、接地保护系统

B．漏电保护

C．绝缘

D．屏护和安全距离

E．过流保护

抵质押品须经下列（）有权人审批后方可调阅。

A、行长

B、分管行长

C、会计结算部经理

D、路支行负责人

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.

1（）

A.aged

B.aging

C.age

D.ages

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