题目内容
Many people believe we are heading for environmental disaster(灾难)_________ we radically(根本地)change the way we live.
[ ]
A.
but
B.
though
C.
unless
D.
in case
答案:C
练习册系列答案
相关题目
题目内容
Many people believe we are heading for environmental disaster(灾难)_________ we radically(根本地)change the way we live.
but
though
unless
in case