问题补充：
Generally speaking, it is about on the mountain than in the valley.
A. three degrees colder
B. three degrees as cold
C. colder three degrees
D. as cold three degrees
答案：
(答案→)A. three degrees colder
B. three degrees as cold
C. colder three degrees
D. as cold three degrees
解析：可联系答.案.网客服索取。
