— This is Sam, my classmate.

— _______________________[ ]

A. How old are you?

B. What's your name?

C. Nice to meet you.

D. What day is it today?

读“沿赤道断面局部地球板块图”，判断下列正确的是

A．图中能找出六大板块

B．①、②板块名称分别是美洲板块、非洲板块

C．图示山地是澳大利亚的大分水岭

D．③处板块的边界类型为消亡边界