函数$f\left(x\right)={\left(\sin x+\cos x\right)}^2$的最小正周期为（   ）

    I have a twin sister, Jenny. She has ____ (long) hair than me. Many people think we must have a lot of things in ____. That's not true. Jenny is creative. She ____ (win) the best prize in the school talent show last year. She likes making friends, but I like staying at home. So she is ____ outgoing than me. And I only can watch TV twice a week ____ I have to go to school every day. I always get better ____ (grade), but she is much ____ (little) hard-working. So maybe I should help her. ____, we also have some similarities (相似点). We ____ like sports and going shopping, so we can talk about and ____ everything with each other. I love my twin sister.

如图表示生物新物种形成的基本环节，则下列对图示的分析，正确的是（　　）