题目

下列化学用语或结构表达不正确的是（） A . 葡萄糖的化学式：C12H22O11 B . 2个氮气分子：2N2 C . 镁离子的符号：Mg2+ D . 石墨的结构：(圆球代表碳原子) 答案：A友谊是焦渴时的甘泉， 黑暗中的明灯； 友谊是快乐时的分享， 忧伤时的抚慰……某英文网站正在开展“ Friendship”为主题的征文活动。假如你是李华，请用英语写一篇短文投稿，谈谈你最珍视的一段友谊，主要内容包括：你最好的朋友是谁，你们如何成为好朋友的，以及你为什么珍视你们之间的友谊。提示词语：in trouble, help, encourage, together, treasure, happy提示问题：Who is your best friend?How did you become best friends?Why do you treasure the friendship between you?As teenagers, I believe that everyone needs friends._______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ As teenagers, I believe that everyone needs friends.A life without a friend is a life without the sun. Friendship is one of the most important things in everyone's life. Friends are your part of li...