阅读短文，选择正确答案。

It was very hot and a little windy that day. Mike and his friends went to swim in the lake. John could not swim, so Mike taught him. Jim wanted to swim in the middle of the lake. Jane stopped him.

But Jim didn't listen to her. After a few minutes, they heard him calling for help, "Help! Help!"

Then they saw his hands. They shouted loudly. A farmer worked near the lake and heard Jim. He jumped into the water and helped Jim go out. The farmer took Jim to a hospital. And other children called Jim's parents. They came to the hospital quickly and thanked the farmer very much.