The problem of global warming is serious the sea levels have a little.A. As a conseque

问题补充：

The problem of global warming is serious. , the sea levels have a little.

A. As a consequence; risen

B. On the contrary; arisen

C. On the other hand; arisen

D. In other words; risen

答案：

(答案→)A. As a consequence; risen

B. On the contrary; arisen

C. On the other hand; arisen

D. In other words; risen

解析：固定词组。As a consequence结果是；On the contrary恰恰相反；On the other hand另一方面；In other words换句话说；rise上升；arise上升，出现；句意：全球变暖问题变得更严重了。结果海平面上升了一点了。