读图,既位于北半球,又位于西半球的点是( )
A:A地和B地
B:B地和D地
C:C地和D地
D:A地和C地
Hello! Welcome to my show(欢迎参观我的展览). They're my animals. Look! The lion has got a blue shirt. The tiger has got a red hat. The monkey has got a yellow skirt. The panda has got a green T-shirt. Has the elephant got a brown sweater? No, he hasn't. He has got an orange sweater. That's very funny.
A. B. C. D. E.
已知矩阵A=1204,B=201-1,则AB=____ .
诗句“不敢高声语,恐惊天上人”中的高从物理角度是指声音( )