To those disabled athletes, the most important thing is _______ win a gold, ______take part.

A．not only; but also

B．either; or

C．both; and

D．not to; but to

传导慢痛及内脏痛的纤维主要是

A．Ar纤维
B．Aα纤维
C．Aδ纤维
D．C类纤维