No one gets through life without experiencing many disappointments. Strangely, though, most people seem unprepared for disappointment and react to it in negative ways. They feel depressed or try to es
---If our parents would listen more to us, they would understand us better. ----_______. They just expect us to listen. A. I believe not B. No problem C. Good idea
成等比数列，且曲线
的顶点是
，则
等于（ ）