论文部分内容阅读
一次,亲戚送来两筐桃子,一筐是刚刚成熟的,一筐是已经完全熟透马上就会变质的。父亲问,选择怎样的
Once, relatives sent two baskets of peaches, a basket is just ripe, a basket is completely cooked immediately will be spoiled. Father asked, what kind of choice