研究生英语第二单元CancerChemical

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1、UnittwoCancer&ChemicalsContents1、Theauthor2、textstructure3、Difficultsentences4、Thisarticleappreciate5、BackgroundandextendedknowledgeTheauthorMarlaConeMarlaCone,oneofthenation'smostexperiencedenvironmentaljournalists,isaneditorinchiefofEnvironmentalHealthNews.Shehadreportedfo

2、rnewspapersfor30years,including18attheLosAngelesTimes,whereshewastheseniorenvironmentalwriter.Conepioneeredanenvironmentalhealth beatattheTimesthatfocusedonexplainingtherisksthatpollutantsposetopublichealth,wildlifeandecosystemsaroundtheworld.textstructurePart1(1-5):Thepropo

3、sition65,thestate’sSafeDrinkingWaterandToxicEnforcementAct,begantobeimplemented.AndBruceAmeshadplantedtoslaughtersacredcows.Hehasadifferentmessage:thelevelsofmostman-madecarcinogensaregenerallysolowthatanydangeristrivialcomparedwiththelevelsofnaturalcarcinogens.textstructure

4、Part2(6-14):ThispartintroducetheprocessofAmes’scancerresearch.Ames’stestisaremarkableachievement.Part3(15-17):TherearesomeopinionsagainstAmes.AndAmesrestatesthatwecan’tspendallourtimechasingtriviaatthepriceofgivingupthewholechemicalindustry.MainideaMostman-madecancerrisksare

5、trivialcomparedwithdailynaturalrisks.Ifyouspendallyourtimechasingtrivia,youlosesightoftheimportantrisks.aflatoxin黄曲霉毒素DifficultsentencesButBruceAmes,chairmanofthedepartmentofbiochemistryattheUniversityofCaliforniaatBerkeley,hadplanstoliventheproceedings.(paragraph2theseconds

6、entence)Analysis:chairmanofthedepartmentofbiochemistry引导非限定性定语从句。非限定性定语从句在形式上就与主句很松散，它与主句之间有一个逗点"，"隔开；它对其先行词没有限定、修饰的作用，只起补充、说明的作用。有时也用它来对全句进行补充、说明。即使将其去掉，也不会影响句子意思。由于上述原因，非限定性定语从句在表达意思方面也有别于限定性定语从句。另外，非限定性定语从句在中文译文里，我们往往将其作为一个分句处理，而不把它作定语翻译。translation：但加州大学伯克利分校生物化学系系主任布鲁斯·

7、爱姆兹却计划使会议开的更有生气。DifficultsentencesEvenhiscriticssaytheAmestest—hissimple，inexpensivelaboratoryprocedurethathelpsdeterminewhetherasubstancemightcausecancer—isaremarkableachievement.（paragraph6thelastsentence）Analysis:这里两个破折号用在一个解释性的插入语前面和后面，相当于一个括号，在本句中解释Thetest。translation：甚

8、至爱姆兹的批评者也认为他的试验是一项了不起的成就，这种试验是在实验室中进行的一种物美价廉的操作方法，它有助于检测一种物质是否能引起癌症。Difficu