it was very cold my friend still went swimming in Jialing River this morning.A. Althoug

问题补充：

it was very cold, my friend still went swimming in Jialing River this morning.

A. Although;/

B. Although; but

C. But; although

D. /;although

答案：

(答案→)A. Although;/

B. Although; but

C. But; although

D. /;although

解析：句意: 虽然天气很冷，今天早上我的朋友们仍然在嘉陵江里游泳。although 虽然，尽管，引导让步状语从句，不与but 连用，故选A。