M: Robin, what’s the time now
W: It’s 8:00 now.
M: Why do you still stay at home
W: I am not myself today. I’m afraid I can’t go to school.

How is Robin().

单项选择题In writing the passage, the author intends to ().

A．give an accurate description of the possible disaster in the future
B．prove that humans will sooner or later be destroyed
C．tell the historical development of the Earth
D．warn of a possible disaster in the future

单项选择题What was Alan doing at that time().

A．She was taking a rest.
B．She was preparing for an exam.
C．She was taking an exam.