请教一个gre机经题目

gre111111111222UID: 4000468

Climate change without the Arctic is a recognized change elsewhere: around the world,
ocean levels and daily weather are interconnected with the fortunes of a region that was, until
recently, largely ignored.
A.catalyst for
B.factor in
C.measure of
D.outcome of
E.metaphor for
F.index of

答案是A B 题目完全理解不了什么意思 求大佬指教

达达715UID: 3973943

AB 都是“因素”的意思 你加我微信吧 我免费给你答疑

gre111111111222UID: 4000468

达达715 发表于 2019-12-4 18:31
AB 都是“因素”的意思 你加我微信吧 我免费给你答疑

请问微信是多少