题目

阅读下面的材料，在空白处填入一个单词或括号内单词的正确形式（一个或几个单词）Nowadays Wechat（微信）is more and more popular. I often talk to my English friends on Wechat to help me speak English 【1】（good）than before. And I can read lots of 【2】（information）on Wechat that can make me know more around. Some news also makes me become more careful. Sometimes I feel Wechat is like 【3】mirror that helps me see something 【4】（clear）.【5】, Wechat brings me some trouble as well. Some friends put photos of the real things on Wechat to自行车刹车时，刹车橡皮与转动的车轮钢圈之间的摩擦是 ________摩擦（滑动/滚动）；自行车把手上有花纹是利用 ________的方法来增大摩擦．