In order to get ________ enough travel experience, they have planned _________ bicycle journey along the longest river of the country.

A．an; /

B．an; a

C．/; /

D．/; a

对随同成人旅行，身高1.2～1.5米的儿童，享受（）。

A、半价硬座客票、加快票、空调票

B、半价硬座客票、加快票、卧铺票、空调票

C、半价客票、加快票、空调票

D、半价软座客票、加快票、空调票

E、客规