题干
There was a loud cry from the backstage immediately after the concert ended, _______?
A：wasn't there
B：was there
C：didn't it
D：did it
答案(点此获取答案解析）
A
There was a loud cry from the backstage immediately after the concert ended, _______?
A：wasn't there
B：was there
C：didn't it
D：did it
三点都在抛物线 的图象上，则 的大小关系是（ ）