英语高手请进：一篇英语阅读（2）
Itiswell-knownthattheEnglishgooutwithanumbrella(雨伞)oraraincoat.Why?__1__theweatherinBritainoftenchangesquickly.Itisnotveryusualforthesamekindofweatherto__2__long.
Springcanberainyorwindy,__3__.Theweatherisgettingwarmerandyoucanhopemoresunnydays.Infactthere__4__asmuchsunshineinspringasinsummer.Summeris__5__timeforvisitorstogototheseasideandotherplacesofinteristing(名胜).Theweathercanbesunnyandnice.Peopleoftengoouttohaveawalkorswim.Autumnisabeautifulseason,__6__treesinthewoodsandparkschangingcolor.Duringautumnitisstillnicetobeoutside,too.Inwinter,itgetscolder.Itmightsnow,especially(尤其)onhighlandandinthenorth.Thereare__7__veryhighwindsinthisseason.
JanuaryandFebruaryarethecoldest__8__oftheyear,whilethewarmest__9__oftenJulyandaugust.Thedifference__10__temperaturebetweenwinterandsummerisnotsogreatinBritain.Theaverage(平均)temperatureforwinterisabout4.5℃,andforsummerabout15.5℃.
()1.A.ForB.AsC.BecauseD.Since
()2.A.makeB.stayC.changeD.take
()3.A.butB.andC.ofD.for
()4.A.canB.canbeC.haveD.canhave
()5.A.theearliestB.thelatestC.theworstD.thebest
()6.A.withB.likeC.withoutD.from
()7.A.alsoB.tooC.eitherD.aswell
()8.A.seasonsB.weatherC.monthsD.monthes
()9.A.isB.areC.wasD.were
()10.forB.onC.byD.in
答案是CBABDAACBD
请问：10的答案的原因