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2023~2024学年核心突破XGK(二十五)25物理试卷答案试卷答案

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Lastyear,theFeedingAmericanetworkandourpartnersrescued4.7billionpoundsofgroceries.Thatfoodwentdirectlytomealsforpeoplefacinghunger.ThismakesFeedingAmericathelargestfoodrescueorganizationinthecountry.Foodrescue,orfoodrecovery,isthepracticeofcollectinghigh-qualityfoodthatwouldotherwisegotowasteanddistributingittopeoplefacinghunger.Weworkwithmanufactur-ers,retailers,andfarmerstoreducefoodwasteandgetrescuedfoodtopeopleinneed.Weidentifyfoodatriskofgoingtowaste,offerrescuedfoodtofoodbanks,safelyshipfoodoverlongdistancesandkeepfoodfreshlongeronceitreachesafoodbank.28.WhatdoweknowaboutthefoodinAmerica?A.Itisbarelyenough.B.Itisquiteabundant.C.Itiseasilyavailable.D.Itisincreasinglyinsufficient.29..Whatdoestheunderlinedphrase"equatesto"inparagraph3mean?A.Consumes.B.Multiplies.C.Wastes.D.Equals.30.How'doestheauthorrevealthefoodwasteinAmerica?A.Bymakingcomparisons.B.Bypresentingdata.y4.C.By.listingreasons.D.Byofferingexamples.31.WhatdoesFeedingAmericaactuallydo?A.Itteachespeoplehowtogrowfood.B.Iturgesgovernmenttotakeaction.C.Itsavesfoodfrombeingwasted.D.Itaimstorelieveworldhunger.DOneofthemostcommonbeliefsamongresearchersisthathumansfirstarrivedinNorthAmerica16,000yearsago.Accordingtoarecentfossildiscovery,thatmightnotbetrue.ThenewfindingsuggeststhathumansmighthavearrivedinNorthAmericafarearlier.ln20l3,adamagedmammoth(猛犸象)skullandotherbonesthatlooked“deliberatelybroken"werefound.Thedamagetothebonessuggestedthathumansweretheoneswhocausedittomaketools.Carbon-datinganalysissuggestedthepiecesareroughly37,000yearsold.Thisdiscoverycouldshift.ourunderstandingofhumans'earliestexistenceinNorthAmerica.Thesefossilssuggesthumanskilledanimalsintheareamuchearlierthan16,000yearsago.PreviousresearchledscientiststobelievethefirsthumansthatsettledinNorthAmericabelongedtotheClovisculture.Thiswasagroupofpeoplewholeftbehindcarefullymadetools16,000yearsago.However,carbon-datinganalysisofthemammothbonesindicatesthatthesiteisaround36,250to38,900yearsold.Thatmeansit'stheoldestknownsiteleftbe-hindbyancienthumansinNorthAmerica.12"That'snottheonlyinterestingthingaboutthediscovery,"saidTimothyRowe,apro-fessorattheUniversityofTexas."Thesimilarfindingssupportinganearlierdateforhumanarrivalhavebeenmostlyignored.Thisisbecausetheyhavecontradictedpreviousresearch."Now,however,hethinksthere'sagoodchancethatresearcherswillfindevidenceofhumans【高三英语，第6页（共10页）】2005C·QG·

2023~2024学年核心突破XGK(二十五)25物理试卷答案第一部分

(2)如图b所示,撤去(1)中的拉力,现只用一个弹簧测力计通过细绳沿平行于木板的方向拉橡皮筋,要将橡皮筋的B端拉至,这样做的目的是;记下细绳的方向,并读出拉力的大小为F=2.20N;

2023~2024学年核心突破XGK(二十五)25物理试卷答案第二部分（待更新）

7.下列常见物品中能被磁铁吸引的是…..........................................()A.玻璃烧杯B.橡皮C.铜导线DD.钢钉