Liu Ming is my chemistry teacher. He is an ordinary-looking little man with thick glasses, but he has a strange way of making his classes lively and interesting.
I remembered his first lesson. He put three bottles on the desk. One was filled with kerosene, one with castor oil, and one with vinegar. And he said Now watch carefully. pay attention to everything that I do. He held up one of his fingers and dipped it into the cup after he mixed the three kinds of liquid in a big cup together. A few seconds later, he took his finger out, put it in his mouth and sucked it. How delicious! You must do everything that I do. said he. And then we did it like him. lmmediately we made a face. The mixture tasted horrible.
It was first chemistry lesson. I never forget it.
刘明是我的化学老师。他并不起眼而且带着厚厚的眼镜，但是他有一种奇特的方法使他的课生动有趣。
我记得他上的第一堂课。他把三个瓶子放在桌子上。一个装满煤油，一个装满蓖麻油，一个用醋。他说：现在看仔细。注意我所做的一切。他举起一根手指蘸了杯混合的三种液体在一个大杯子在一起后。几秒钟后，他把手指拿出来，放在嘴里吮吸它。多么美味！你必须做我所做的一切。他说。然后我们模仿了他的做法。马上我们做了一个鬼脸。混合液的味道太恶心了。
这是第一次化学课。我永远不会忘记。