山西省盂县第三中学校2017-2018学年高二下学期期中考试英语试题

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1、绝密★启用前I盂县三中试题命制中心盂县三中2017-2018学年第二学期期中考试试题高二英语（考试时间：90分钟试卷满分：100分）第一部分阅读理解（共两节，满分30分）第一节（共15小题；每小题1・5分，满分22.5分）阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。AChineseresearcherssaytheyhavecomeupwithasimplewaytofindoutaperson'sbiologicalage一howmuchthebodyhasagedphysically-throughauri

2、ne（尿）test.Theirfindingswillhelpresearchersconductnumbersofageingstudiesandevenpredictaperson'sriskofage-relateddiseases,accordingtoapaperpublishedinthejournalFrontiersinAgeingNeuroscience・AnotherpaperbyresearchersattheBeijingHospitalandtheWestChinaHospitalinChengdu,Sichuanprovince

3、,saidonTuesdaythatpeopleagedatdifferentratesduetochangesintheirgeneticmake-upandtheirenvironment.Chronologicalage一whichisbasedonone'sbirthdate——wasaninaccuratemeasureofbiologicalagesoamoreaccuratemethodwasneeded,theteamsaid・Ageingisdrivenbythelifelonggradualaccumulationofabroadvar

4、ietyofmolecular（分子）faultsinthebody'scells・Theteamsaidtheyhadidentifiedamatter一8-oxoGsn一thatindicatedincreasesinoxidative（氧化'性）damageinurineaspeople'sbodiesaged・CaiJianping,aco-authorattheBeijingHospital,said:"Asweage,wesufferincreasingoxidativedamageandsothelevelsofoxidativematter

5、sincreaseinourbody：Theteamtestedthelevelsof8-oxoGsninurinesamplesfrom1,228Chinesepeopleagedtwoto90andconcludedthemarkerhelpedaccuratelydeterminethestageofbiologicalageinginadults・Theyhadpreviouslyfoundthat8-oxoGsnlevelsalsoincreasedwithageintheurineofanimalssuchasmice.Theteamhasal

6、sodevelopedarapidanalysistechniquecalledultra-high-performanceliquidchromatography,whichcanprocessupto10urinesamplesanhour,accordingtothestudy.1.Scientificallyspeaking,bywhatdoesadoctorjudgethestageofapersongettingold?A.Hiscondition.B.Hisbiologicalage.D.Hischronologicalage.2.Whata

7、retheouterfactorsthespeedofone'sageingphysicallydependon?A・One'sbirthdate.B・Theincreasesinoxidativedamageinurine・C・Thechangesintheirgeneticmake-upandtheirenvironment.D.Theaccumulationofvariousmolecularfaultsinthebody'scells.3.Whichcantaketheplaceoftheunderlinedword"marker"inthesix

8、thparagraph?A.8-oxoGsn.B.Molecula