应该要加s,因为天花板掉下来的时候说明已经了，所以不止一块。（这里动名词falling作形容词,下坠的）

原文如下：Peoplewearuniformsfordifferentreasons.Westudentswearschooluniformsatschooltoshowgooddiscipline.Firefighterswearspecialcoatsandhelmetstoprotectthemselvesfromheatandfallingceil...

wehopethatwearegoingtoimproveourlives.Somepeoplewritedowntheirresolutionsandplansforthecomingyear.Thishelpsthemtoremembertheirresolutions.Otherstelltheirfamilyandfriendsabo...

Astrongearthquakeoccurred,andifyouarecarparks,donotstayinthecar,soastoavoidcollapseoftheceilingcrushedvehicle,causinginjury;pronepositiontobehidinginChepang,fallingceilings...

4．Priceceilingsareattemptstokeeppricesfromrisingtotheirequilibriumlevel.Priceceilingscauseshortages,andblackmarketsoftendevelopinresponsetotheshortage.Rentcontrolisanexampleof...

translationtransference翻译转换（我猜应该是一种题型，比如汉译英，英译汉等）priceceilings价格的最高限度例句WageandPriceceilings工资和价格的最高限度framily据英国《卫报》报道,最近的一项调查发现,四分...

andifyouarecarparks,donotstayinthecar,soastoavoidcollapseoftheceilingcrushedvehicle,causinginjury;pronepositiontobehidinginChepang,fallingceilingspressureinthevehicle...

takealookaround,putyourhandsintheairliketheceilingsfallingdowntakeachancewithme,girlyouknowthatiwon'tdoyounoharmohmylove,yougotmyheart,heart,heartyeah,...

英[ˈsiːlɪŋ]n.天花板；上限；顶棚；最高限度复数：ceilings搭配反义词adj.+n.highceiling,lowceiling,currentceilingv.+n.imposeceiling,putceiling,setceiling权威英汉双解英汉...

小题1:B小题2:C小题3:D小题4:A小题1:根据单词意思可知答案为B小题2:根据下文专家的描述，可知道答案为C小题3:根据文章的内容可知答案为D小题4:根据文章的内容可推断为A...