首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、If they don’t involve any risks. B、If they produce predictable side effects. C、When the urgent need for them arises. D、When te
A、If they don’t involve any risks. B、If they produce predictable side effects. C、When the urgent need for them arises. D、When te
admin
2013-04-09
38
问题
In order for a chemical to be considered a drug, it must have the capacity to affect how the body works. No substance that has the power to do this is completely safe. [33]Drugs are approved only after tests have demonstrated that they are relatively safe when used as directed and when their benefits outweigh their risks. Thus some very dangerous drugs are approved because they are necessary to treat serious illnesses. Many people suffer ill-effects from drugs called side-effects even though they take the drugs exactly as directed. [34]The human population contains a great variety of genetic variation. But drugs are tested on just a few thousand people. When a particular drug is taken by millions, some people may not respond in a predictable way even though the drug has been tested.
[35]A patient may also acquire a tolerance for a certain drug, which means the patient has to take ever-larger doses to produce the desired effects. Tolerance may lead to heavy situation, in which a person becomes so dependent on the drug that he or she becomes addicted to it. Addiction causes severe psychological and physical disturbances when a drug is taken away. Finally, drugs often have unwanted side-effects. They usually cause only minor discomfort, such as a skin rash, headache or sleepiness. Certain drugs, however, can produce serious adversary actions.
33. Under what circumstances are drugs approved?
34. Why do many people suffer side-effects from a drug even though they take it as directed?
35. What will happen when patients acquire a tolerance for a certain drug?
选项
A、If they don’t involve any risks.
B、If they produce predictable side effects.
C、When the urgent need for them arises.
D、When tests show that they are relatively safe.
答案
D
解析
短文听力常常是“听到什么选什么” 。录音提到,药物只能在经过安全测试后,并在指导下使用。故答案为 B
转载请注明原文地址:https://kaotiyun.com/show/IdI7777K
0
大学英语六级
相关试题推荐
Althoughwefeeldissatisfiedwiththeelectionresults,wehavetobecome______tothedecisionmadebyourfellowcountrymen.
TheactofGooglingoneselfhasbecomethedigitalage’spremiereguiltypleasure—anactivityenjoyedbyallandadmittedbyfew
A、WearingbraceswillnotimproveKathy’sappearance.B、Kathyshouldwearbraces.C、Kathyshouldtakecareofherdentalhealth.
Inpublic,bankershavebeenblamingthemselvesfortheirtroubles.Behindthescenes,theyhavebeentakingaimatsomeoneelse
Obama’sWaronSchoolsTheNoChildLeftBehindActhasbeendeadlytopubliceducation.Sowhyhasthepresidentembracedi
A、Hercomputerdoesn’tworkwell.B、Sheisn’tgettingalongwithherstaff.C、Shedidn’tregisterforapropercourse.D、Shecan
HappinessfollowsaU-shapedcurveduringaperson’slifetime,accordingtoresearchshowingthatmiddle-agedpeoplearetheunh
Eventhebest-intentionedpoliciescanfallpreytotheoddityofhumanbehavior,asanewstudyofcredit-cardrepaymentfinds.
Musicproducesprofoundandlastingchangesinthebrain.Schoolsshouldaddmusicclasses,notcutthem.Nearly20yearsago,a
随机试题
根据我国《民法通则》的规定,18周岁以上的公民是成年人,具有完全民事行为能力,可以独立进行民事活动,是()
男性,43岁。3小时前呕血1次,自觉头晕、乏力、出汗。查体:心率110次/分,血压100/70mmHg,肝掌,腹壁静脉曲张,超声示腹水。该患者的出血量可能为
我国对药学技术人员实行职业准入控制制度的产物是与执业药师相类似的是
某省天洋市滨海区一石油企业位于海边的油库爆炸,泄漏的石油严重污染了近海生态环境。下列哪一主体有权提起公益诉讼(其中所列组织均专门从事环境保护公益活动连续5年以上且无违法记录)?(2015年卷一30题)
下列情形中,纳税人应进行土地增值税的清算的是()。
档案咨询的类型有()
伦敦奥运会前夕,曾经准确预测过奥运会大国获得奖牌总数的科学家们认为,奖牌总数与其说是一个体育问题,不如说是一个经济问题。英国在2012年伦敦奥运会上赢得的奖牌数将打破纪录,美国和中国应该会在今年继续取得成功,但俄罗斯、澳大利亚和德国今年极有可能会感到失望。
在草原生态系统中,鹿吃草,狼吃鹿;狼死了以后,经过微生物分解,它的尸体又变成肥料被草吸收……如此往复循环,构成了自然界的食物链。以前,草原上长多少草,这些草能养活多少鹿,这些鹿又能养活多少狼,都有一定的自然范围,保持着相对的稳定和平衡。但是,当狼被人为消灭
SECTION3Questions21-30Questions21-25CompletethefollowingstatementsusingNOMORETHANTHREEWORDSforeachgap.
Whenthesuffix______isaddedtoaverb,itchangesthisverbintoanadjective.
最新回复
(
0
)