若$\frac{a-b}{b}=\frac{2}{3}$，则$\frac{a}{b}$=（ ）

选择与句子意思相符的图片

He was cute. He has big ears. He was smile. ____

She has small glasses and long hair. She's quiet. ____

She was kind and friendly. She was tall and thin. ____

He's from America. He's very tall and strong. He's good at basketball. ____

He couldn't ride his bike well. ____

A、    B.  C.    D.   E.

如图，一小车上有一个固定的水平横杆，左边有一轻杆与竖直方向成θ角与横杆固定，下端连接一质量为m的小球P．横杆右边用一根细线吊一相同的小球Q．当小车沿水平面做加速运动时，细线保持与竖直方向的夹角为α．已知θ＜α，则下列说法正确的是（   ）

宋朝主要的文学形式是（    ）