问题补充:
The two companies have reached a partial agreement, but several differences still between them.
A. happen
B. survive
C. appear
D. exist
答案:
A. happen
B. survive
C. appear
(答案→)D. exist
解析:本题考查动词辨析。句意:……但他们之间仍然存在一些差异。exist 存在。happen发生;survive幸免于难;appear出现