安全防范工程的管线施工按照GB50303－2002《建筑电气工程施工质量验收规范》进行
1、正确正确
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Whyaretoday'soldermiddle-agedandelderlybecomingthenewwinners?
Thesmallmountainvillagewas（）bythesnowformorethanonemonth.
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit（）whenshewastryingtogotosleep.
_____nocauseforalarm,theoldmanwentbacktohisroom.
Itisnotuncommonforthere_____problemsofcommunicationbetweentheoldandtheyoung.
