So______that many parents are too worried to let their children travel alone at the beginning of the new term.

A．is the distance great

B．great the distance is

C．the distance is great

D．great is the distance

促销的主要任务是（）。

A.宣传与说服

B.引起消费者的注意与兴趣

C.传递与组织有关的信息

D.促进消费者购买