回答： the relationship between students and teachers. the teaching skills of a teacher. the pressure of teacher and their emotional state and mood.

回答： It is important for teacher to undated their knowledge. I still can remember that my high school teacher did know Dolly when he was illustrating the colon technology. I thought he lacked the necessary expertise, partly because of he did not get a sufficient preparation before class, but principally because he had not update his knowledge. Therefore, I think requiring teachers to attend courses every five years is necessary.

回答： Although the knowledge they obtained from coursed maybe update rapidly, I still hold the opinion that this training can arouse the awareness for teacher to improve their expertise. It just like that we cannot forbid the slaughter of wildlife by a activity out side the zoo, but at least we can arouse the awareness of public to protect the wild animal.

回答： biology, because the development of biology is rapidly. Meanwhile, chemistry especially in analytic chemistry is also developing rapidly. I was a student whose major was biology and chemical biology. ```

回答： the class will become more vivacious than before, since the teacher can provide you some latest knowledge about knowledge. furthermore, you can communicate with your classmate, exchange the opinions about these novel technology. For example, there are some debate among scholars about colon technology, you can discuss with your classmates whether you support it or not.