单项选择题
A. are in the possession of each individual B. are something exchanged for money C. are not familiar to highly educated people D. are not included in a book
A. It’s the cheapest in the shop. B. It’s one of the best in the shop. C. It’s above average. D. It was on sale last week.
A. Vitamin A B. Vitamin B C. Vitamin C D. Vitamin D