阅读理解Eatingtoomuchfattyfoodexercisingtoolittleandsmokingcanraiseyourfutureriskofheartdisease．Butthereisanotherfactorthatcancauseyourheartproblemsmoreimmediately|小学英语问答-字典翻译问答网

问题标题：

阅读理解Eatingtoomuchfattyfoodexercisingtoolittleandsmokingcanraiseyourfutureriskofheartdisease．Butthereisanotherfactorthatcancauseyourheartproblemsmoreimmediately

问题描述：

(1)

(2)

阅读理解

　　Eatingtoomuchfattyfoodexercisingtoolittleandsmokingcanraiseyourfutureriskofheartdisease．Butthereisanotherfactorthatcancauseyourheartproblemsmoreimmediately：theairyoubreathe．

　　Previousstudieshavelinkedhighexposure(暴露)toenvironmentalpollutiontoanincreasedriskofheartproblembuttwoanalysesnowshowthatpoorairqualitycanleadtoheartattackorstroke(中风)withinaslittleasafewhoursafterexposure．Inonereviewoftheresearchscientistsfoundthatpeopleexposedtohighlevelsofpollutants(污染物)wereupto5％morelikelytosufferaheartattackwithindaysofexposurethanthosewithlowerexposure．AseparatestudyofstrokepatientsshowedthatevenairthattheU．S．EnvironmentalProtectionAgency(EPA)considerstobeof“moderate”(良好)qualityandrelativelysafeforourhealthcanraisetheriskofstrokeasmuchas34％within12to14hoursofexposure．

　　Theauthorsofbothstudiesstressthattheserisksarerelativelysmallforhealthypeopleandcertainlymodestcomparedwithotherriskfactorssuchassmokingandhighbloodpressure．Howeveritisimportanttobeawareofthesedangersbecauseeveryoneisexposedtoairpollutionregardlessoflifestylechoices．SostricterregulationbytheEPAofpollutantsmaynotonlyimproveenvironmentalairqualitybutcouldalsobecomenecessarytoprotectpublichealth．

Thetextmainlydiscussestherelationshipbetween．

[　　]

A．

heartproblemsandairquality

B．

heartproblemsandexercising

C．

heartproblemsandsmoking

D．

heartproblemsandfattyfood

Theunderlinedword“modest”inParagraph3mostprobablymeans．

蒋峰回答：

　　答案：1．A;2．C;3．D;4．A;

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