一、单项填空 （25分）
( )1. ---______ do you brush your teeth every day?
---Three times. At least twice suggested by doctors.
A. How soon B. How long
C. How often D. How many times
( )2. Two third s of the information on the internet ______ not officially published(发布) now. You must learn to protect yourselves.
A. is B. are C. was D. were
( )3. Though all of us hate Chinese style road crossing, there are still ______
crossing the road when traffic lights are red. It must be changed.
A. few B. a few C. little D. a little
