光滑绝缘的水平面上,两个可视为点电荷,电性相反的小球,由静止释放后的一小段时间内,则下列说法中正确的是( )
公元前209年,陈胜、吴广发动了我国历史上第一次大规模农民起义,起义地点是( )
Hi,I'm Lili. I'm from China. I'm a____(student\teacher).This is my family. Look at the man,____(He's\She's)my father. Look at the woman,____(He's\She's)my mother.____(He's\She's)a____(student\teacher). I love my family.