2021_2022学年广东深圳宝安区深圳市宝安中学初三上学期期中英语试卷(详解)

2021~2022学年广东深圳宝安区深圳市宝安中学初三上学期期中英语试卷(详解)1.1.2.3.4.5.6.7.8.9.Numbersenseisnottheabilitytocount.Itistheabilitytorecognizeachangeinnumber.Humanbeingsarebornwiththisability.1,experimentsshowthatmanyanimalsare,too.Forexample,manybirdshavegoodnumbersense.If2nesthasfoureggsandyouremoveone,thebirdwillnotice.However,ifyouremovetwo,thebirdgenerallyleaves.Thismeansthatthebird3thedifferencebetweentwoandthree.Anotherinterestingexperimentshowedabird's4numbersense.Amanwastryingtotakeaphotoofacrow（乌鸦）thathadanestinatower,butthecrowalwaysleftwhenshesawhimcoming.Thebirddidnot5untilthemanleftthetower.Themanhadanidea.Hetookanothermanwithhimtothetower.Onemanleftandtheotherstayed,buttheyweren'tsuccessfulinfoolingthebird.Thecrowstayedaway6thesecondmanleft,too.Theexperimentwas7withthreemenandthenwithfourmen.Itwasnotuntilfivemenwentintothetowerandonlyfourleftthattheyfinallymanagedtotakeaphoto.Howgoodisahuman'snumbersense?It'snotverygood.Forexample,babiesaboutfourteenmonthsold8noticeifsomethingistakenawayfromas