问题
选择题
Scientists generally agree that Earth's climate will warm up over the next 50 to 100 years ________ it has warmed in the 20,000 years since Ice Age.
A．so long as
B．as much as
C．as long as
D．as well as
答案
答案：B
这是一个表示同级比较的比较状语从句，因比较的对象是上升的温度，所以B项最佳。