In the north of China, it has been snowing for weeks onend, which causes severe damage to

In the north of China, it has been snowing for weeks on end, which causes severe damage to crops; it is estimated that the heavy snowfall will come to end next week.
A. /; an
B. the; a
C. a; an
D. an; /

(答案→)A. /; anB. the; aC. a; anD. an; /解析：试题分析:考查冠词用法。固定短语on end “持续；直立的”；come to an end “结束”，根据语境判断A选项正确。句意：在中国北部大雪持续了数周，这造对庄稼造成了严重的损害；据估计这次的降雪将于下周结束。

感谢回答，我学习了