问答题
What is implied in the sentence 'These clouds are the mines canary of global warming. '(Lines 12-13, Paragraph 2)?
A.Night-shining clouds may be a sign of global warming.
B.There is a canary in the mine below night-shining clouds.
C.Global warming is caused by night-shining clouds.
D.Night-shining clouds may accelerate global warming.
A.Night-shining
B.
B.There
C.
C.Global
D.
D.Night-shining
E.