【单选题】Jack often does things foolishly, so he ___ sometimes ___ by others.
【单选题】( )源于英文原名"Aerobics",意为"有氧运动"
【简答题】健美操源于英文原名 "Aerobics" ,意为()
【单选题】Jack often does things foolishly, so he ____ sometimes _____ by others. A.
【单选题】Jack is full of vitality and He often does things_______.
【单选题】健美操源于英文原名"Aerobics",意为( )
【单选题】有一种有机物结构简式为Cl- CH=CH 2 推测它不可能具有下列哪种性质
【单选题】一般企事业单位、人民团体不宜使用的文种是: