初中英语牛津译林版九年级上册Unit2Coloursunit2阅读理解专练

Unit2阅读理解专练Haveyoueverheardsomeoneusethephrase“onceinabluemoon”?Peopleusethisexpressiontodescribesomethingthattheydonotdoveryoften.Forexample,someonemightsaythathetriestoavoid(避免)eatingsweetsbecausetheyareunhealthy，butwilleatchocolate“onceinabluemoon”.Orsomeonewhodoesnotusuallyliketogotothebeachmightsay“Ivisittheshoreonceinabluemoon”.Whilemanypeopleusethisphrase,noteveryoneknowsthemeaningbehindit.Thefirstthingtoknowisthatthemoonitselfisneverreallyblue.Thisisjustanexpression.Infact,thephrase“bluemoon”hastodowiththeshapeofthemoon,notthecolor.Asthemoontravelsaroundtheearth,itappearstochangeshape.Weassociate(联系)certainnameswithcertainshapesofthemoon.Forexample,whenwecanseeasmallpartofthemoon,itiscalledacrescentmoon.Acrescentisashapethatlookslikethetip(尖端)ofafingernail(指甲)Whenwecannotseethemoonatall,itiscalledanewmoon.Whenwecanseethewholemoon,itiscalledafullmoon.Usually,thereisonlyonefullmooneverymonth.Sometimes,however,therewillbetwofullmoonsinonemonth.Whenthishappens,thesecondfullmooniscalleda“bluemoon”.Overthenext20years,therewillonlybe15bluemoons.Asyoucansee,abluemoonisaveryrareevent.Thisfacthasledpeopletousetheexpression“onceinabluemoon”todescribeotherveryrareeventsintheirlives.1.Whichofthefollowingwouldbeagoodexampleofusingthephrase“onceinabluemoon”?A.Simonoftentellsjokes.Simontellsjokesonceinabluemoon.B.Tomrarelyrememberstodoexercise.Tomdoesexerciseonceinabluemoon.C.Marylikestogoshoppingeveryweekend.Marygoesshoppingonceinabluemoon.D.Cindyhatestostayup,butshestaysupeveryday.Cindystaysuponceinabluemoon.2.Whendoesabluemoonhappeninnature?A.Whenthemoonhasabluecolor.B.Whenwecannotseethemoonatall.C.Whentherearetwofullmoonsinonemonth.D.Whenwecanonlyseeasmallpartofthemoon.3.Whichofthefollowingisanotherexampleofsomethingthathasacrescentshape?A.Theletter“0”. B.Theletter“M”.C.Theletter“H”. D.Theletter“C”.4.Howoftenwillabluemoonhappenoverthenexttwentyyears?A.Onceayear.B.Lessthanonceayear.C.Morethanonceayear.D.Atleasttwiceayear.5.Whatdoestheunderlinedpart“Thisfact”inthelastparagraphreferto(所指)?A.Abluemoonisaveryrareevent.B.Themoonappearstochangeshape.C.Themoonitselfisneverreallyblue.D.Abluemoonhastodowiththeshapeofthemoon.

参考答案及解析1.B通读全文、特别是最后一句可知，只有很难出现的事才用这个短语表达。而四个选项中只有B项符合这种情况。故选B。2.C由第三段最后两句话可知，在自然界中有时一个月出现两次满月，第二次满月便称为abluemoon。故选C。3.D由第三段“Acrescentisas