问题详情

It can be concluded that __________
A.raising the world ’ s temperature only a few degrees would not do much harm to life on earth
B.lowering the world, s temperature merely a few degrees would lead many major farming area to disaster
C.almost no temperature variations have occurred over the past decade
D.the world’s temperature will remain constant in the years to come请帮忙给出正确答案和分析，谢谢！