任意一个三角形中都至少有一个锐角.

一束光线斜射入容器中，如图在容器的底部出现一光斑，现向容器内逐渐加水直至加满的过程，容器底面上的光斑将   （ ）

   The girl is my friend. She is thirteen 1 old. She is 2 with long legs. She 3 long hair, but she has a 4 face like an apple. She has two big black eyes and small ears. 5 mouth is big, but her nose is6. She likes red, but now she is 7a yellow skirt and brown 8. She is a nice girl. She and I9 good friends. 10 is she? She is Linda.

以“My classmate”为题，介绍自己的同学，包括他的名字、年龄、外貌特征、爱好等。要求语句通顺，不少于5句话。