----He’s never seen to eat so much food,______________?

----No, he always eats a little.

A．is he

B．isn’t he

C．has he

D．hasn’t he

以下EVA、PVC、PE三种塑料膜性能的对比不正确的是：（）

A.初始透光性EVA≥PVC＞PE

B.保温性PVC＞EVA＞PE

C.强度EVA＞PE＞PVC

D.耐候性EVA＞PVC＞PE