已知函数$y=A\sin \left(\omega x+\phi \right)+m$的最大值为4，最小值为0，最小正周期为$\frac{\pi }{2}$，直线$x=\frac{\pi }{3}$是其图像的一条对称轴，则下列各式中符合条件的解析式是（     ）

解释加线的字。

其子曰 其：____。

其邻人之父亦云 云：____。

而疑邻人之父 之：____。

阅读下面的对话完成任务。

A: Excuse me, Susan. （1）Is this your backpack?

B: No, it isn't. It's Jack's. （2）My backpack is green.

A: Is your computer game in the lost and found case?

B: No, it's Jack's. And that white eraser is Jack's, too.

A: Do you know Jack?

B: Yes, I do. （3）他是一个英国男孩。He's in Class One, Grade Seven.

A: Oh, what's his telephone number?

B: 100-2116

A: Is Miss Miller his English teacher?

B: Yes, you're right.

下列各项措施中，不能避免遗传疾病孩子出生的是（　　）