Ⅰ单项选择。(共15小题，计15分) 本题共有15个小题，请从每个小题的四个选项中，选出一个最佳答案。
( )1. —How do you study English so well ? — ______ working hard.
A. By B. At C. From D. with
( )2. — What would you do if you won a million yuan? — _________________________
A. I will give it to charities. B. I will buy snacks.
C. I will put it in the bank. D. I’d give it to medical research.
( ) 3. Smoking is bad for your health. You’d better _______.
A. set it up B. give it up C. pick it up D. look it up
( ) 4. There is _____ boy pouring waste water into the river.
A. a 8-year-old B. a 8-years-old C. an 8-year-old D. an 8-year old
( ) 5. adults began to learn English in this small town.
A. Million of B. Millions of C. Two millions D. Two millions of
