21.细节理眸题。根据BURNING MAN下列没洛中平"It takes place from the last Sunday in August toLabor Day,with an emphasis on freedom,creativity,and self-expression.”可知,8月份人们可以参加Burning Mant(火人节)。故选A。22.细节理解题。根据CARNIVAL下列段落中"The event takes place in February or March,attracting nearly 5 million people who're baking in theheat each year..”和ICE&SNOW SCULPTUREFESTIVAL下列段落中“Located in NortheastChina,Harbin receives some seriously cold winterwinds blowing over from Siberia.”及“Activities inthe area during the festival include touring icelantern exhibitions and swimming in the river's coldwaters.”可知,这两个节日都在极端的温度下举行。故选D。23.细节理解题。根据KING'S DAY下列段落中"The rest of the world could learn a thing or twofrom the Netherlands about properly celebrating thenational governor's birthday.”可知,King'sDay是为了纪念国家元首。故选D。