人们常将在同一原子轨道上运动的，自旋方向相反的2个电子，称为“电子对”；将在同一原子轨道上运动的单个电子，称为“未成对电子”．以下有关主族元素原子的“未成对电子”的说法，错误的是（　　）

    My uncle is a farmer. He has ninety 1trees on his farm. My uncle and my2can't pick(采摘) all the apples in fall(秋天).3 they ask my parents and me to 4 them every year. It's Sunday. My parents don't go to5and I don't go to school. So we'll go to the6. We get up early(早) in the 7 My mother is in 8 old clothes. My father buys many kinds of food for my uncle's 9in a shop. She likes them very much. My uncle and aunt 10 us many apples, too. I like to work on the farm.

从2016年1月1日起，我国实施一对夫妇可生育两个孩子的政策，“全面二孩”政策实施后将（　　）