It is not known whether. MDMA studies conducted on animals.

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问题 It is not known whether______.
MDMA studies conducted on animals______.

选项 A、show damage to the kidneys
B、cannot provide absolute proof of the effect of the drag on humans
C、are cruel and have been discontinued
D、suggest alcohol and Ecstasy used simultaneously cause death

答案B

解析

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It is not known whether______. MDMA studies conducted on animals______.

公共英语四级笔试

公共英语（PETS）

TodayTVaudiencesallovertheworldareaccustomedtothesightofAmericanastronautsintip-topcondition,withfairhair,c

Psychologiststakecontrastiveviewsofhowexternalrewards，from【C1】______praisetocoldcash，affectmotivationandcreativity．

Accordingtothewoman,whatgovernstheclotheswewear?

Asthe2lstcenturybegins,anumberofleadersinpolitics,education,andotherprofessionsbelievethattheUnitedStatesmus

IfyouarebuyingapropertyinFrance,whetherforapermanentoraholidayhome,itisimportanttoopenaFrenchbankaccount

Aneweraisuponus.Callitwhatyouwill:theserviceeconomy,theinformationage,theknowledgesociety.Italltranslates

A=PassageOneB=PassageTwoC=PassageThreeInwhichpassageyouwillfind...PassageOneAmericanandChinesecultu

WhichofthefollowingistheacceptabletablemannerinBritain?

Thenursingstaff______.Whydon’tnursesstudyforasmanyyearsasdoctors?

应收账款、预付账款等债权类流动资产只适用于按________进行评估()

A．二尖瓣狭窄B．二尖瓣关闭不全C．主动脉瓣狭窄D．主动脉瓣关闭不全听诊时既有S1减弱，也有P2亢进的是

下列有关尺泽穴的叙述中，正确的有

下列关于培养基性能试验说法不正确的是

关于甲状腺，描述正确的是

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职业道德规范——“合作”的特征包括()。

简述董仲舒的三大文教政策。

【B1】【B5】

It is not known whether. MDMA studies conducted on animals.