Sally is 76 years old. She has no sons 1 daughters. Her husband（丈夫） died(死) 15 years 2. But she didn't move into an old people's home. She would like to look after(照顾) herself . Every morning she gets up early and goes for a walk in the park. She likes doing sports in the park, too .When she does these things, She feels very 3.

    Every day she spends two hours 4 children with their math. And she was a popular 5 before she retired(退休) from a middle school. When the children come 6 help, she is always happy to help them. She often says to the children,“I'm so 7 to be with you. You are all my kids. ”

    When people ask her 8, she says,“I love children and 9 staying with them. Every kid is a 10 for me. ”

 已知$\left|a+3\right|+{\left(b-4\right)}^2=0$，试求$\frac{1}{3}a+\frac{1}{2}b$的值。

数字技术是以数字形式获取、表述、传递、____、____、控制、共享信息的技术体系。

一次函数y=﹣2x+1的图象一定不经过第____象限．