中考英语阅读理解专项训练---健康环保类

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1、中考英语阅读理解专项训练…健康环保类ASpendingtwoorthreehoursplayingoutdoorseachdaycanreducethechanceofbecomingshort-sighted,aresearchshows・Ifchallengesthebelief（信念）thatshort-sightednessiscausedbycomputeruse,watchingTVorreadinginweaklight.TheAustraliangovernmentresearchersbelievethat

2、thesunlightisgoodforpeople'seyes.Theycomparedthevision（视;/j）andhabitsof100seven-year-oldchildreninSingaporeandAustralia.Inall,30%oftheSingaporeanchildrenwereshort-sighted一thisrate（比率）wastentimeshigherthanAustralianchildren.Bothgroupsspendasimilaramountoftimereading

3、,watchingtelevisionandplayingcomputergames・HowevertheSingaporeanchildrenspentanaverageofonlyhalfanhouradayoutdoors一90minuteslessthantheAustralianchildren.ProfessorIanMorgan,fromtheAustralianResearchCounciPsvisionCentre,said,"Humansarenaturallylong-sighted,butwhenpe

4、oplebegintogotoschoolandspendlittleornotimeoutdoors,thenumberofshort-sightedpeoplegetslarger.We7ealsoseeingmoreandmoreshort-sightedchildrenincitiesallaroundtheworldandthemainreasonmaybethatcitychildrenspendlesstimeoutdoors・Daylightcanbehundredsoftimesbrighterthanin

5、doorlight.Butwhydoesplayingoutsidepreventusfrombecomingshort-sighted?Scientistsbelievethatnaturallighthasaspecialchemical（化学物质）whichstopstheeyeballfromgrowingoutofshapeandpreventspeoplefrombecomingshort-sighted・Sobeoutdoors.Itdoesn'tmatterifthattimeisspenthavingapi

6、cnicorhavingsports.1.Whichofthefollowingcanreducethechanceofbecomingshort-sightedaccordingthepassage?A.Playcomputergames・B.WatchTV.C.Readinweaklight.D・Dooutdooractivities.2.HowmuchtimedidtheAustralianchildrenspendoutdoorsonaverageaccordingtotheresearchA.30minutes.B

7、.60minutes-C.90minutes-D.120minutes.3.WhichofthefollowingisTRUEaccordingtothepassageA.Ifpeoplespendmoretimeoutdoorstheywillcertainlybecomeshort-sighted・B.Therearefewershort-sightedSingaporeanChildrenthanAustralianchildrenbecausetheyhavemoreknowledgeofprotectingthei

8、reyesight.C.Therewillbefewerrisksofgettingshort-sightedifpeoplespendtwoorthreehoursadayplayingoutside.D.Whenpeoplebegintogotoschooltheywillbecome