题干
We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______ success.
A：/; a
B：the; /
C：the; a
D：a; a
答案(点此获取答案解析）
C
A：/; a
B：the; /
C：the; a
D：a; a
2AB(g)达到平衡状态的标志是（ ）