21．According to _____ UN report, 70 percent of the world population have____ access to huge amounts of information through the Internet from their homes.
A．an；不填 B．a；an C．an；an D．a；不填
22. Though Typhoon Muifa didn’t strike Wenzhou in the end, it still caused great _______ to the local economies.
A. damage B. destroy C. ruin D. injury
