.He has __________________ the surroundings & now he is getting well on with his classmates;______________,he is treated as a normal student in the school.

A．adjusted to ,at all

B．adapted to,all in all

C．fitted ,after all

D．suitable for,in all

细胞最外一层细胞壁是（）

A.初生壁

B.次生壁

C.角质层

D.胞间层