阅读下文，根据短文内容回答问题，并把答案填写在答题卡上相对应的位置。A farmer had four lambs (羊羔). One was black, and the other three were white. The black lamb was friendly to the others. But the white lambs often laughed at (嘲笑) him. They thought he was ugly . Also, the farmer did not like him. He gave bad food to the black lamb.
One winter morning, the four lambs went out to eat grass. They went far away from home. In the afternoon, it began to snow. It was such a heavy snow that the ground (地面) became white soon. They couldn't find their way home.
When the farmer found that the lambs were not at home, he went out to look for them. There was snow everywhere . So it was difficult for him to find his lambs. Suddenly（突然）, he saw something black. He went to it. Oh, it was his black lamb! And the white lambs were there, too. The farmer was very excited. He said happily, "Because of the black lamb, I can find you!"
