C）Shecontributedittocharitableorganizations.D)Shegaveitouttothosewhoneedit.
21.A）Hecompletedhisbiggestcharityprojectuntilnow.B）HegotamessagefromObamaandlawmakers.
C）HeaskedforhelpforthosehomelesschildreninAmerican.D)Hemanagedtoraisetensofthousandsdollars.
22.A）Heenjoyedcommunityserviceworkeversincehewasverylittle.
B）Heoncewalkedaroundwithhislittleredwagongivingwaterafterahurricane.C）Hemadeaprojectcalled”FromMyHousetotheWhiteHouse”.
D)Hedrovealittleredwagonwhenhecollectedmoneyforhomelesschildren.PassageThree
23.A）Itdoesn’tworkasexpected.B）Itcandoharmtochildren.C）Itcanfindoutseriousinjuries..D)Itcanprovidedetailedimageofthebrain.24.(A)Manychildrensuffergreatlyfrombraininjury.(B)Manychildrenarethreatenedbylungcancer.
(C)Childrensuffermorefrombraininjurythanfromcancer.(D)Childrenhaveahighriskofdevelopingcancer.25.(A)Whenachildagedtwohasnobrokenboneintheskull.(B)Whenachildagedtenloseconsciousness.(C)Whenachildagedonehasnoseriousheadache.(D)Whenachildagedninehasnormalmentalactivity.
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