在线求指导:In the past decades,

在线求指导:In the past decades,
In the past decades, sea ice _____in the Arctic as a result of global warming. [ ]
A. had melted
B. has been melting
C. melted
D. is melting

空动99 1年前 已收到1个回答 举报

linxiaopeili 幼苗

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B

1年前

2
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