A:老子
B:孔子
C:墨子
D:庄子
黄河下游支流少,流域面积小的最主要原因是( )
My brother usually _____ in a townhouse with us. But now he _____ for an apartment near the school.
—Yes,you are.
解不等式组:2x-1>x+1x+8<4x-1.