问题详情

According to the author, what adds to the seriousness of global warming？
A．The American public was ignorant of the problem.
B．The American government is doing nothing to deal with the problem.
C．The US will choose coal as the major fuel which will have large carbon emissions.
D．There is no alternative fuel other than foreign oil which has large carbon emissions.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！