36. --- I don’t know whether I should accept the invitation to join Microsoft or get my master degree first.

---- Don’t hesitate _______ will you get such an opportunity.

A．and never again

B．or never again

C．and where

D．or where

如果飞机在飞行中受到接近或超过限制的载荷作用，飞行后应当重点检查的机翼部位是：（）.

A.翼尖部位

B.翼根部位

C.机翼前缘

D.机翼后缘