生活中处处有物理．我们在腌制鸡蛋时发现，刚放入浓盐水中的鸡蛋浮在液面上，过一段时间，鸡蛋会下沉，一个月左右就成为可食用的咸鸡蛋了．请你用学过的物理知识解释上述现象．
①浸在液体中的物体所受的浮力大小等于它排开的液体所受到的重力；
∵刚放入浓盐水中的鸡蛋，盐水的密度大于鸡蛋的密度；
∴当F浮＞G时，鸡蛋就会浮在液面上；
过一段时间，部分盐分子扩散到鸡蛋里，使鸡蛋得重力变大，
当F浮＜G时鸡蛋就会下沉．
②一个月左右就成为可食用的咸鸡蛋了是盐分子的无规则运动产生扩散的结果．
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| "I didn't do anything!" "Say you're sorry!" "It's not my fault!" Sound familiar? If so, you are like a lot of kids who sometimes ___1__ with their friends or family members. It's not always easy to _2___ with others. Kids aren't ___3__, so they sometimes do things that get them into ___4__. Saying "I'm sorry" can help. Saying you're sorry is called apologizing. When you apologize, you're telling someone that you're sorry for the __5__ you caused. When you apologize to someone, you stop to think about the other person's __6__, and you begin to feel sorry for your ___7__. You may even feel ___8__ or ashamed if you did something that you knew was ___9__ even if what happened was an accident or you didn't do it ___10__. You would probably ___11__ feel sorry if you knew the other person's feelings were hurt. Kids might need to apologize if they did something they knew was wrong. __12_ can apologize, too-to other grown-ups or even to ___13__. After all, grown-ups also make ___14__ sometimes. By apologizing when they are wrong, grown-ups can __15__ a good example and show kids how to do the right thing and apologize when they __16__. Sometimes a heartfelt "I'm sorry" __17__ everything right away. Other times, it might take a while for a person to feel friendly after you __18__. You might need to give them _19__. Even after you say you're sorry, you might still feel ___20___ for what you said or did, but you can feel good about apologizing and about making up your mind to do better. | ||||
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