One day a farmer’s donkey fell down into a well. The animal cried 1 for hours as the farmer tried to figure out 2 to do. Finally he decided the animal was 3and the well needed to be 4 up anyway, so it just wasn’t 5 it to rescue the donkey.

    He invited all his 6to come over and help him. They all grabbed (握起) a shovel (铁铲) and began to shovel 7into the well. At first, the donkey 8what was happening and cried horribly. Then, to everyone’s9, he was quiet.

    A few shovel loads later, the farmer looked 10 the well and was 11 at what he saw. With every shovel of dirt that12his back, the donkey was doing something amazing. He would 13 it off and take a step up. As the farmer’s neighbors 14 to shovel dirt on top of the animal, he would shake it off and take another 15 up. Pretty soon, everyone was surprised as the donkey stepped up over the 16 of the well and ran off.

    Life is going to shovel dirt on you, all kinds of dirt. The best way of 17 out of the well is to shake it off and take a step up. Each of our18is a stepping-stone. We can get out of the deepest 19 just by not stopping, never20! Shake it off and take a step upward!

选修4-4：坐标系与参数方程

在平面直角坐标系$xoy$中，圆C的参数方程为$\left\{\begin{array}{c}x=1+3\cos t\\ y=2+3\sin t\end{array}\right.$.在极坐标系（与平面直角坐标系$xoy$取相同的长度单位，且以原点O为极点，以x轴非负半轴为极轴）中，直线l的方程为$\sqrt{2}p\sin \left(\theta -\frac{\mathrm{\pi }}{4}\right)=m,\left(m\in R\right).$