Over the past decades, mountain ice______ in the Himalayas as a result of global warming.
A.has been decreasing | B.had decreased |
C.decreased | D.is decreasing |
推荐套卷
Over the past decades, mountain ice______ in the Himalayas as a result of global warming.
A.has been decreasing | B.had decreased |
C.decreased | D.is decreasing |