---Don't you enjoy watching the English programme Outlook English Magazine

on CCTV Channel 10?

---________. I think it very helpful to improve my listening and speaking abilities.

A．Yes, I do

B．No, I don't

C．Yes, I don't

D．No, I do

在暴风雨中，大树有时会连根拔起，而树干却不折断，这是因为（）

A.木质部发达

B.韧皮纤维较多

C.韧皮部发达

D，树皮较厚