单选题
The salary of a taxi driver is much higher ______. A. than a worker B. than that of a worker C. to compare as a worker D. in comparison with a teacher
【正确答案】
B
【答案解析】[解析] 此句考查比较级的使用。比较的对象是出租车司机的月收入和一个工人的月收入，that of a worker就是the salary of a worker的意思，所以选择B。