单选题
The table above shows the average (arithmetic mean) price per dozen of the large grade A eggs sold in a certain store during three successive months．If 
Month | Average Price per Dozen |
April | $1.26 |
May | $1.20 |
June | $1.08 |
【正确答案】
D
【答案解析】[解析] 设4月份的销售打数为x，则5月份销售的打数为[*]，6月份销售的打数为2x，因此这3个月中每打鸡蛋的平均销售价格为：
[*]
[*]