②根据电荷间的作用规律判断，方法是：用玻璃棒靠近带电体，若相互排斥，说明玻璃棒带同种电荷；若相互吸引，说明玻璃棒带异种电荷；若没有吸引或排斥现象，说明玻璃棒不带电．
③利用验电器检验，方法是：将玻璃棒与验电器上的金属球接触；若金属箔出现张角，则说明玻璃棒带电；若金属箔没有出现张角，则说明玻璃棒不带电
①百家争鸣促进了奴隶社会向封建社会的过渡
②百家争鸣促进了当时中国思想的解放
③百家争鸣奠定了中国传统文化体系的基础
④百家争鸣确立了儒家思想的正统地位
It's Sunday morning. There are many people in the park, some boys are playing basketball. There are some girls under a big tree. They're singing and dancing. What are those women doing? They are drinking tea. Look at the woman in a blue coat. Who's she? She's my mother. She is talking to Edward. Edward is her student. He is a good student. He studies hard. He's good at all the subjects. And he's friendly to all his teachers and his friends.
____hobby is ____ ____.
