A、Freshmen aren’t allowed to borrow books. B、Freshmen have to be trained in the library. C、Freshmen haven’t got their student ca

M: Steven Hawking warns that humans will have to move to other planets for survival in near future. It really astonishes many people.
W: He’s never exaggerating. Humans are likely to meet that day if they go on destroying the environment.
Q: What does the woman mean?

M: The library is finally open to us. I have been waiting for ages.
W: Don’t count the chickens before they are hatched. The teacher says freshmen aren’t allowed unless we get our student cards.
Q: What can we infer from the conversation?