Fewpeoplewouldquestionthevalueoftakingpartinsportsforyoungpeople．Withpropertraining，supervision，protectiveequipmentandtechniques，andanproperemphasisonwinning，sportscandevelopahealthybodyandspiritan
Fewpeoplewouldquestionthevalueoftakingpartinsportsforyoungpeople．Withpropertraining，supervision，protectiveequipmentandtechniques，andanproperemphasisonwinning，sportscandevelopahealthybodyandspiritandalife-longinterestinbeingactiveandfit.Withoutsuchmeasures，childhoodsportscanleadtoinjuriesandevenparalysisordeath．
Eveninthebestconditions，noactivitycanberisk—free．Butmostserioushazardsarepreventable．Cyclistsandfootballplayerscanreducetheirrisksbywearinghelmets；hockeyplayersbywearingmasks；basketballandtennisplayersbywearingeyeguards；baseballplayersbywearingbattinghelmets．
Besides，riskstoindividualplayerscanoftenbefound，andthusprevented，throughaproperlyperformedmedicalexambeforeachildplays．Foraccidentsthatmaynotbepreventable，havinganemergencyplanandfirst-aidequipment，andsomeonetrainedtousetheequipment，canbelifesaving．
Still，eachyear，accordingtotheAmericanCollegeofSportsMedicine，morethan775000childrenunder14aretreatedinemergencyroomsforsportsinjuries，nearlyhalfofthempreventable．Anestimated300000athletesexperienceexercise—relatedheadillnesseseachyear，andalmostallofthemshouldhavebeenavoided．
Further，fromhalftothree—fourthsofsports-relatedconcussions（脑震荡）areneverevendiagnosed；theinjuredareoftensentbackintoplaytoosoonandputatriskofanothermoreseriousbrain—damagingconcussion．TohelpreducetheseriskstheNationalCenterforSportsSafetywiththeNationalAthleticTrainers’Associationoffersathree-houronlinesafetycourseforcoachesfor$28atwww.SportsSafety.org.
68．Whichofthefollowingistrueaccordingtothepassage?
A．Alltheaccidentscanbeprevented．B．Alltheaccidentscannotbeprevented．
C．Livescanbesavedsolongasthereisproperequipment．
D．Livescannotbesavedevenifthereisproperequipment．
69．Whatdoestheunderlinedword“hazards”(inparagraph2)mean?
A．mistakes B．diseases C．dangers D．situations
70．Itisimpliedinthepassagethat ．
A．preventionofinjuriesisnotpaidenoughattention