我国面积最小的省级行政单位是[ ]
A.台湾
B.海南
C.香港
D.澳门
答案:D
There _______ two basketball matches on TV this evening.
A.are going to be
B.is going to
C.will have
D.are going to have
下列系统属于两相的是()。
A.饱和的氯化钠溶液
B.空气
C.冰水混合物
D.氢气和氧气的混合气体