A:that Yangzhou was very rich in the ancient times
B:who built Ge Garden and He Garden
C:when was the Wenchang Pavilion built
D:what is the City Flower of Yangzhou
位于东北平原,有我国汽车工业“摇篮”之称的城市( )
已知集合U=R,A={x|3x﹣x2>0},B={y|y=log2(x+1),x∈A},则A∩(∁UB)为( )
生活中的下列变化,属于化学变化的是( )