What happened to him after the World Tennis Tournament().

A.He became famous.

B.He joined the airlines industry.

C.He had habitual headaches.

D.He became a hair stylist.

建筑材料按材料的化学成分分为( )。

A．金属材料

B．非金属材料

C．无机材料

D．复合材料

E．有机材料