Numbers of terrorists attacks in the past few years have signaled that anti-terrorism remains long term goal for world.
A. a; a
B. the; a
C. a; the
D. the; the
网友回答
A. a; a
B. the; a
(答案→)C. a; the
D. the; the
解析：考查冠词。remain/keep … a goal意为“以……为目标”；the world为独一无二的事物。选C。