The author argues that compared with war or natural disasters, environ mental problems

A．Because he was never afraid of anything.
B．Because he was protected by a special medium.
C．Because he had enough experience.
D．Because it was his job.

A．It must be wrapped quickly.
B．It will arrive next week.
C．She’d like the store to send it to her.
D．She’ll take it with her to save trouble.