读短文，选择正确的答案。

Hello! Look at me. Who am I? Look! I have a red flower and green leaves. I have thin and small roots. Thanks to （多亏） my straight （笔直的）stalk （茎）, I can stand in winter. Many friends don't like winter, but I like it very much. People all like me, because I am a symbol （象征）of happiness and good luck （好运）. I am from Mexico （墨西哥）. I'm a Christmas Flower.