问题补充：
It is global warming, rather than other factors, the extreme weather.
A. that have led to
B. which has caused
C. which are causing
D. that has led to
答案：
A. that have led to
B. which has caused
C. which are causing
(答案→)D. that has led to
解析：可联系答.案.网客服索取。
