一元二次方程x²﹣5x+c=0有两个不相等的实数根且两根之积为正数，若c是整数，则c=____ ．（只需填一个）．

从方框中选择正确选项．并将其字母序号写在对话后面的空格内。(方框中有一个选项与对话内容无关)

Celia: Hi Tony! You look upset. What's wrong?
Tony: I failed the exam again. I'm afraid I have to give up my study.
Celia: No, never. If you do that, you will let your parents down.      ____ 
Tony: Yes. I want to practice basketball and become a basketball player like Yao Ming or Kobe.
Celia:    ____ 
Tony: Because it's my dream job. If I am famous, I can make lots of money.
Celia: Money is important.    ____ 
Tony: I know. But I want to hold on to my dream.
Celia: Have you ever talked with your parents?
Tony:   ____  But they don't agree. They want me to be a doctor.
Celia: I think you'd better take your parents'advice.
Tony: Maybe you're right. But why can't 1 make my own decisions?
Celia: Come on, Tony.  ____      After all, your parents have more experience.
Tony: Anyway, I’ll think about it. Thanks for your advice.

明朝时，“田中事，田主一切不问，皆佃农任之”，地主与佃农之间，“交租之外，两不相问”。此种现象反映出当时

在中央电视台《星光大道》节目中，经常看到有些年轻选手落选后，坦然面对观众说：“不要紧，我还年轻，还有机会再来。”下列对此分析正确的是（     ）

读等高线地形图，完成下列各题。