有难度的英语笑话(我要考试)

A beautiful female student class a biology professor was suddenly get up answer: person in excitement or excitement, which parts of the body will be ten times the expansion?

"I... I refuse to answer this question?" The girl said stammer, eyes follow shy to avoid the every male classmate, then another classmate was called up to the correct answer: "the pupil."

"Young lady," Rogers said: "you just professor proved refused to answer three things: first, your homework last night didn't prepare; second, do you mind slanting idea; finally..." Professor a beat: "... the third, when the future lead marital life, you will be disappointed."

Heat and cold，which you can catch？
冷和热，你能抓住哪个？