The volunteers try to convince people _____ the fact that some species are in danger of _____.

A．for; dying away

B．about; dying down

C．of; dying out

D．on; dying off

HIV的传播途径不包括（）

A.性接触

B.母婴传播

C.接受血或血制品

D.吸毒

E.共用餐具