阅读下面短文，从每题所给的A、B、C、D四个选项中选出能正确回答所提问题或完成所给句子的最佳答案。

    Mary is an American schoolgirl. She is now in Beijing with her parents. She doesn't know Chinese, but she is trying (努力) to study and speak it. She often tries to speak Chinese to her Chinese friends. Sometimes they don't understand (理解) her, because she can't speak Chinese well.

    It's Saturday morning. Mary goes out. She is on her way to the park. She is going there to see a flower show (展览). But she doesn't know how to get there. She asks a Chinese boy. The boy can't understand her. Then she takes out a pen and some paper. She draws flowers on it, gives the picture to the boy and says something about it. The boy smiles and then shows (指给) Mary the way to the park.