—— ?
——He is tall and of medium build.
A:What does he like
B:What does he do
C:What's the matter with him
D:What does he look like
当a>b时,下列不等式中正确的是( )
一宇航员为了估测某一星球表面的重力加速度和该星球的质量,在该星球的表面做自由落体实验:让小球在离地面h高处自由下落,他测出经时间t小球落地,又已知该星球的半径为R,忽略一切阻力.求:
如图的漫画将1929﹣1933年的资本主义经济危机比作笼罩全球的巨大章鱼,形象地反映了这次经济危机的特点之一是( )
—Yes, I do.