Over the past decades,sevice_____in the Arctic as a reasult of global warming.

问题描述:

Over the past decades,sevice_____in the Arctic as a reasult of global warming.
A.had decreased B.more than C.attach D.apply
帮忙看下这题 该选什么 理由
sevice 打错了,是 sea ice

A 因为全球变暖北极的海冰减少了
had decreased 减少