请根据以上频率分布表和频率分布直方图，回答下列问题：

在等差数列$\left\{a_n\right\}$中，若$a_4=13$，$a_7=25$，则公差d等于(    )

若点（$x_1$，$y_1$）、（$x_2$，$y_2$）和（$x_3$，$y_3$）分别在反比例函数$y=-\frac{2}{x}$ 的图象上，且　$x_1<x_2<0<x_3$，则下列判断中正确的是（　　）

addict   recognize   likely   treat   affect   danger   disagree   illegal

(B)

    It's Sunday morning. There are many people in the park.and some boys are playing basketball. There are some girls under a big tree. They're singing and dancing. What are those women doing? They are drinking tea. Look at the woman in a blue coat. Who's she? She's my mother. She is talking to Lin Feng. Lin Feng is her student. He is a good student．He studies hard．He's good at all the subjects. And he's friendly to all his teachers and his friends.