Some students are playing soccer, and the __________ are swimming.
A:other
B:other's
C:others
D:other student
已知点O(0,0),B(1,2).
下面划线的字注音全部正确的一项是( )
圆柱的体积等于圆锥体积的3倍。
汉武帝时,张骞通西域,新疆开始成为我国不可分割的一部分。( )