Tell jokes to the biology teacher with biology.

Teacher Pan: "I bought a set of dining table, beech."

Me: "Oh. As a biology teacher, do you know what is the biological close relative of this wood? "

Teacher Pan: "I don't know, what is it?"

Me: "Unfortunately, it has no close relatives."

Teacher Pan: "Ah? Why? "

Me: "Because beech has no relatives."

……

Teacher Pan: "I have a junior high school classmate who is getting married next week."

Me: "Oh? What's the name of your classmate? "

Teacher Pan: "Wan Jian."

Me: "So his wife's surname is Zong?"

Teacher Pan: "Why do you say that?"

Me: "Because-Wan Jian has returned to the motherland!"

……

Teacher Pan: "Do you know that scientists can synthesize starch artificially now?"

Me: "Oh?"

Teacher Pan: "Starch can no longer be synthesized only by plant chloroplasts! Awesome! "

Me: "It's so miserable."

Teacher Pan: "Ah, what's so sad?"

Me: "chloroplasts are going to lose their jobs."

……