在资源管理器左侧的一些图标前边往往有加号或减号，减号表示本文件夹以下各级子文件夹均已展开。
1、正确正确
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Itwasasmallplacethencomparedto_______itisnow.
Theteachertoldusthefact_______.
翻译：WeadvisedyouinourletterofDec.1,thatwewouldliketoplaceatrialorderwithyoufor50piecesFlyingPigeonBicycles.
Johnhardlyspeakstoanybodyintheclass,________________?
Thenoiseofthepartystoppedmegetting________________sleep.
