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液体表面张力产生的原因是液体跟气体接触的表面存在一个薄层,叫做表面层,表面层里的分子比液体内部稀疏,分子间的距离比液体内部大一些,那么分子间的相互作用力表现为」3,当晶体被加热时,分子运动更加剧烈,分子间距离变大,分子间束缚随之减弱,以至分子能够自由的“游动”,呈流动性,这时晶体就处于过程（填物态变化的名称）,4,如图所示,两个表面光滑的铅块相互挤压后粘在一起,说明分子间有空①廉丝子玻璃板铜丝二氧化氯-第1题图第4题图第5题图5
"She'spretty,"Isaid."Butwhatmadeyoudecidetoadopther?"Iasked,uncertainwhetherIhadsteppedintoanareawhichseemedtoopersonal."Idon'twantworktobemywholelife,"shesaid.Iwasn'tsurewhethershesawthetearswellingupinmyeyesasIreplied,"Idon'teither,butI'mafraidit''stoolate!”“Iwas51whenIadoptedMelanie,.”shesaid,“Andit'sthemostrewardingandexcitingthingI'veeverdone."Whenourcheckscame,shehandedmeherbusinesscard,andIfinallylearnedhername-andinthatminute,Isawahappierandmoresatisfiedmyself,areborn"mother-to-be".24.Whatdidtheolderwomanintendtodowhentalkingwiththeauthor?A.Advisetheauthortoforgetherpain.B.Shareherfeelingsofbeinganadoptivemother.C.Showoffherbeautifuldaughtertotheauthor.D.AdvertisethebenefitsofadoptingaChinesegirl.25.Whichofthefollowingbestdescribestheolderwoman?A.Inspiring.B.Patient.C.Outgoing.D.Responsible.26.Whydidtheauthorseeahappierselfaftertheencounter?A.Shecouldadoptchildrenbecauseshewasstillyoung.B.Theolderwomansetanexampleasagoodmother.C.Sherealizedlifewasmoreimportantthanwork.D.Herhopeofowningachildwasbuiltupagain.CFriendshipissomethingthateveryoneneeds.Successisnothingwithoutfriends.Youshare第7页共12页