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1. B。推理判断题。根据…when two thirds of days in the year will enjoy fairly good or excellent air quality可知答案为B。
2. D。推理判断题。根据We will try to make it an internationally famous attraction for tourists(将尽力吸引国际游客)可知答案为D。
3. D。事实细节题。根据An increase in income and longer holidays have made it possible for Chinese to relax after a year of work可知答案为D
