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> Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an
题目简介
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an
题目详情
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster.
A.before
B.as
C.unless
D.in case
题型:单选题
难度:中档
来源:不详
答案
C
C 考察连词。Before在…之前;as因为,由于;unless除非,如果不;in case万一,假使;句义:科学家警告说如果碳排放不下降,我们会面临环境灾难。根据句义和逻辑关系可知C正确。
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题目简介
Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an
题目详情
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