题目

阅读下面短文，根据其内容写一篇60词左右的内容概要。 Something happens to many children when they are out of school over the summer months. It is called the “summer slide.” This may sound like a ride at a water park. But it's not. Summer slide is when children forget much of what they learned during the latest school year. To fight the effects of summer slide, teachers often give students homework over the summer. Many parents may send children to all kinds of camps or find other activities to keep them learning. Some even try to build up their children's strengths by若a＜b＜0，则1，1-a，1-b这三个数最大的是（   ）A.1B.1-aC.1-b