一、单项选择（共15小题；每小题1分，计15分）
在下列各题A、B、C、D四个选项中选择一个能填入题干空白处的最佳答案。
1.— Sandy, _______ apple on the table is for you. Have it before you go out.
—Thanks, Mum. _____ apple a day keeps the doctor away.
A. the; An B. an; An C. an; The D. the; The
2.Mary’s aunt is trying to keep slim. It’s not good for her to have ________ too often.
A. fruit B. ice cream C. vegetables D. water
3.Which sign means ‘No eating or drinking’?
A. B. C. D.
