teacher is science teacher. He’s very strong. He has a big mouth, two big ears, two big eyes and a not too big and not too small nose. He often wears a black new shirt and brown pants, with two big shoes.
　　My science teacher is very kind. And he is very smart, isn’t he? Today, we have science class. We are very happy. Because he is so funny. Who is he? He’s a Mr. Zhang .