题目内容
12.A single night of taking the drug Ecstasy (摇头丸) can cause serious brain damage and speed up the start of Parkinson's disease,scientists say.Just two or three Ecstasy tablets can permanently destroy brain cells that affect movement and reasoning,according to American research that links the drug to Parkinson's for the first time.A study by a team at Johns Hopkins University in Baltimore,Maryland,involving squirrel monkeys and baboons (狒狒) found that both species suffered permanent damage to key cells,which are lost in Parkinson's,after receiving three low doses(剂量)of Ecstasy at three-hour periods.
The study is particularly important because baboons are one of the best animal models for the human brain.George Ricaurte,who led the research,said that the widespread abuse of drug might have caused severe damage."The most troubling result is that young adults using Ecstasy may be increasing their risk of developing Parkinsonism as they get older."
Alan Leshner,a former director of the US National Institute on Drug Abuse,said,"This study emphasizes the multi-aspect damage that Ecstasy causes to users.We've long known that repeated use damages brain cells.But this study shows that even very occasional use can have long-lasting effects on many different brain systems.It sends an important message to young people:don't experiment with your own brain."
Janet Betts,a mother whose teenage daughter Leah died after a single Ecstasy tablet in 1995,said,"This comes as no surprise.But people can't see the effects at first,and they say it won't happen to them.We'll see the symptoms later,just as we have with smoking."
63.The article is intended toB.
A.explain the bad effects of drugs on people's health
B.warn young people of the risk of taking the drug Ecstasy
C.persuade people out of such bad habits as smoking and using drugs
D.tell us the links between the drug Ecstasy and Parkinson's disease
64.We know from the passage that a low dose of EcstasyB.
A.won't cause serious brain damage
B.can permanently destroy one's brain cells
C.will result in immediate symptoms
D.may bring on Parkinson's at once
65.Why are squirrel monkeys and baboons involved in the experiments?A
A.Because their brain is similar to human being's.
B.Because these animals usually take drugs.
C.Because these animals will soon get well after the experiment.
D.Because there is a model in the animals'brains.
66.The underlined word"This"in the last paragraph probably means thatC.
A.Leah died after a single Ecstasy tablet in 1995
B.taking drug has the same symptoms as smoking
C.occasional use of the drug can have long-lasting effects on the brain systems
D.people have long known that repeated use of the drug damages brain cells.
分析 本文是一篇科教类阅读,主要介绍了摇头丸对人体大脑的伤害.
解答 63-66.BBAC
63题答案:B考查细节推理,根据第3段最后一句话,第4段最后一句话,及最后一段,可以推断作者想提醒人们,尤其是年轻人要远离摇头丸.故本题答案为B选项.
64题答案:B考查细节推理,根据第1段第2句及第2段中的"…both species suffered permanent damage…after receiving three low doses of Ecstasy at three-hour periods"…两个物种都遭受永久的伤害…再三小时内接受了三个低剂量以后.可知答案为B.
65题答案:A考查细节推理,根据第3段第1句中的because baboons are one of the best animal models for the human brain.因为拂拂是人类大脑的最佳动物模型.可知本题答案为A选项.
66题答案:C考查细节推理,由整篇文章的主题(第1段),第4段中的"even very occasional use can have long-lasting effects on many different brain systems"及最后一段中的"But people can't see the effects at first,and they say….即使是每一次偶尔的使用也可能会对大脑系统造成长期的影响及最后一段的但是人们一开始看不到影响,而且他们说…可推测"This"指摇头丸对大脑造成的永久性伤害.故本题答案为C选项.
点评 本文是一篇科教类阅读,题目涉及多道细节理解题,做题时结合原文和题目有针对 性找出相关语句进行仔细分析,结合选项选出正确答案.推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案.
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