单选题 Daylight saving time was instituted to increase productivity.
A. reorganized B. started C. encouraged D. taught

【正确答案】 B
【答案解析】[解析] 本题考查动词辨析。画线单词institute“建立,开始”。reorganize“改组,改造,重新组织”,start“开始,使发动”,encourage“鼓励,怂恿”,teach“教”。所以,答案是B。