用竖式计算。

47÷6=       31÷4=       58÷7=       62÷9=

在平面斜坐标系xoy中$\angle xoy=45°$，点P的斜坐标定义为：“若$\overrightarrow{OP}=x_0\overrightarrow{e_1}+y_0\overrightarrow{e_2}$（其中$\overrightarrow{e_1},\overrightarrow{e_2}$分别为与斜坐标系的x轴，y轴同方向的单位向量），则点P的坐标为$\left(x_0,y_0\right)$”．若$F_1\left(-1,0\right),F_2\left(1,0\right)$且动点$M\left(x,y\right)$满足$\left|\overrightarrow{M{F}_1}\right|=\left|\overrightarrow{M{F}_2}\right|$，则点M在斜坐标系中的轨迹方程为（   ）

词汇运用:选择括号内恰当的单词填入空白处。使句子正确。

What____ （a／an)exciting experience it is!

Please keep____  (quiet／quietly)in the library．

____ (Stay／Staying)up late is bad for your health．

Miss Li always____ (provides／offers)US with love and help．

Disneyland is enjoyed by____ (million／millions)of people around the world．