某四棱锥三视图如图所示,则该四棱锥体积为( )
A:163
B:16
C:32
D:323
根据句意及首字母提示完成单词(1)How many c____ are there in the world?(2)Can you write to me s____ ?(3)People in France do not like s____ English.(4)Koalas(树袋熊)come from A____ .(5)Miyoko l____ in Tokyo, Japan.
圆x2+y2=1和x2+y2-6y+5=0的位置关系为( )