提示词语:visit, touch, impress, meaningful, amazing, memory
提示冋题:1) When and where did it happen?
2)What did you experience?
3)Why was it beautiful?
The movie was Dunkirk, a
如果方程ax2+2x+1=0有两个不等实根,则实数a的取值范围是____ .
名著阅读,按要求答题。
I have a computer I don't often use it.