代写范文

留学资讯

写作技巧

论文代写专题

服务承诺

资金托管
原创保证
实力保障
24小时客服
使命必达

51Due提供Essay,Paper,Report,Assignment等学科作业的代写与辅导,同时涵盖Personal Statement,转学申请等留学文书代写。

51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标
51Due将让你达成学业目标

私人订制你的未来职场 世界名企,高端行业岗位等 在新的起点上实现更高水平的发展

积累工作经验
多元化文化交流
专业实操技能
建立人际资源圈

LSD

2013-11-13 来源: 类别: 更多范文

LSD Lysergic acid diethlyamide (LSD) more commonly known in our culture as “acid,” belongs to a group of illicit drugs classified as hallucinogens. Hallucinogens, when ingested, can cause severe hallucinations that may last anywhere from six to twelve hours depending on purity. Hallucinations are by definition “profound distortions in a person’s perceptions of reality.” The use of hallucinogens is not a new phenomenon. Psilocybin, peyote, and mescaline (derived from the peyote cactus) have been dated back thousands of years to ancient Indian religious ceremonies. An archeological dig in Mexico uncovered ancient writings, preserved by lava, that indicate the use of hallucinogens as long as four thousand years ago. Hallucinogens, especially LSD, were prominent in the hippie culture of the 1960s and 1970s, but their popularity declined during the 1980s, giving rise to harder substances such as cocaine. In 1972 it was reported that five percent of the nation, primarily under the age of eighteen, had experimented at least once with LSD. In 1974 that number had leapt to seventeen percent, and by 1979 the numbers were up to twenty-five percent. These numbers dropped steadily as heroine and cocaine gained popularity in the 1980’s, but lsd, percent, hofmann, effects, users, perception, hallucinogens, been, acid, young, years, world, trip, though, reported, number, lysergic, depending, white, vision, vary, surroundings, substances, small, side, serotonin, sensory, seeing, school, risen, rise, receptors, reality, psychotropic, psychosis
上一篇:Smoking 下一篇:Revolution