题干
When you have finished with that book, don't forget to put it back on my desk, _____?
A：do you
B：don’t you
C：will you
D：won’t you
答案(点此获取答案解析）
C
A：do you
B：don’t you
C：will you
D：won’t you
(2x2-3x+1)的递减区间为 （ ）
