1(2019福建)Allovertheworld,thousandsofanimalsareusedforwildlifetourism.Peopletraveltowatchmonkeyshows,hugbabytigersandswimwithdolphins.Itmightlooklikefun,buttherearereportsthatanimalsarehurtnowandagain.TheWorldAnimalProtection(WAP)saysthatupto550,000wildanimalsareexposed(暴露)toilltreatmentaroundtheworld;inCambodia,forexample,it’sbeenreportedthatelephantshavediedaftercarryingtouristsforlongi...
1不定冠词a/an的基本用法1.不定冠词(a,an)的基本用法用法示例在人叙或述某时物用前于第一次提到的某Thisisabook.指人或事物的某一类别,以区别Aplaneisamachinethatcanfly.于其他种类泛指某人或某物Ayoungmaniswaitingforyou.用在某些物质名词或抽象名词前,表示“一阵、一份、一类、There’llbeastrongwindinSouthChina.一场”等aknifeandfork用于可视为一个整体的两个名词前“a+序数词”表示“又一,再ThecakeisdeliciousandIwou...
01问候篇1.Hello!/Hi!你好!2.Goodmorning/afternoon/evening!早晨/下午/晚上好!3.Howdoyoudo?/Howareyou?你好吗?4.ImLucyKing.我是露西金。5.AreyouPeterGreen?你是彼得格林吗?6.Yes,Iam/No,Imnot.是,我是。/不,我不是。7.Howareyou?你好吗?8.Howareyoutoday/thisafternoon/evening?今天/下午/晚上好吗?9.Fine,thanks.Andyou?很好,谢谢。你呢?10.Imfine,too.我也很好。02介绍篇1.Whatsyourname?你叫什么名字?2.MayIh...
【一】在△ABC中,AB=AC,∠BAC=120°,AB的垂直平分线交BC于M,交AB于E,AC的垂直平分线交BC于N,交AC于F,求证:BM=MN=NC.证明:AB的垂直平分线交BC于M,交AB于E,AC的垂直平分线交BC于N,交AC于F,∴BM=AM,CN=AN,∴∠MAB=∠B,∠CAN=∠C, ∠BAC=120°,AB=AC,∴∠B=∠C=30°,∴∠BAM+∠CAN=60°,∠AMN=∠ANM=60°,∴△AMN是等边三角形,∴AM=AN=MN,∴BM=MN=NC.【二】如图,已知:E是∠AOB的平分线上一点,EC⊥OB...