单项选择题
A. People sometimes say they are in good health. B. The date of a major tragedy is remembered as a black out. C. A reduction in electric power. D. Officials order all lights turned off to make it difficult for enemy to find a target.
A. Our budget for sales has been increased. B. The sales are down too much. C. Sam doesn’t think the sales department should be held responsible for the decline in profits. D. Sam thinks the best way to increase sales is to introduce a new generation of products.
A. He is an experienced police officer. B. He will quit his present job sooner or later. C. He is a food supervisor. D. He enjoys being a police officer.