题目

在两个相同的薄壁塑料瓶（质量忽略不计）内分别装入体积相等、密度为ρ甲和ρ乙的两种液体后密封，再把它们放入两个装有水的容器中，处于如图状态。下列判断正确的是 （   ）A．ρ甲＜ρ乙B．ρ甲=ρ乙C．ρ甲＞ρ乙D．无法判断 答案：C I'm Li Hua from China. My spoken English used to be very . I went to an English school every night. I read different textbooks and learned the grammar roles. But I didn't make any at all! Then one day, I the Internet for "Learn English". I found a great website with interesting articles, videos and games.After that I started learning English from the website. I was glad to find was much easier and more interesting to learn English in this way. After several months, something happened. One day I met an American in a coffee shop. I started to have a(n) with him. English words came out from my mouth one by one. It was hard for me to that I could speak English so easily. We talked for about one hour. Then we decided to in touch and talk to each other on the Internet.My English has greatly now. There are many good ways to learn English. We should using a way that doesn't work and find out what is helpful to us.【1】A. good B. poor C. useless【2】A. mistakes B. decisions C. progress【3】A. searched B. created C. discovered【4】A. that B. this C. it【5】A. amazing B. terrible C. difficult【6】A. competition B. conversation C. argument【7】A. promise B. consider C. believe【8】A. keep B. get C. lose【9】A. spread B. improved C. increased【10】A. enjoy B. continue C. Stop