咱写过的 = = 一模一样的 这是我那时写的 修改了下People often say."Difficulties are humans' best friends."Indeed,difficulties can help me a lot.I used to be poor at chimistry.I was very worried at that time.However, I knew I must do something to overcome the difficulty. So I did a lot of exercises every night.Sometimes,I was tired.But I never gave up. I believed that "Practice makes perfect. Now,my chemistry is much better than before. From my cxperience,I've learnt that if I keep trying and trust myself,I will be sucessful.
最新问答: 从成语典故中找历史人物1 破釜沉舟 2 投笔从戎3 投鞭断流 4 初出茅庐 叶片用光照后脱去叶绿素滴上碘酒现象是 2.有一种放射性元素X,它的氧化物X2O的半衰期为8天,X2O与F2能发生如下反应: 用绳子捆住两根直径为5cm的竹竿,接头忽略不计,捆4周至少要用多少厘米长的绳子? 如图,有一块长为80米,宽为50米的长方形绿地.其中有三条笔直的道路 尿素中C O N H四种元素的质量比, 路遥知马力,力不足.日久见人心,心不古. 汉翻英 1.黎明已收到你的信就会给你写信 This is Lucy and that is Lily这样开头的完形填空 设随机变量X~N(0,4),U(0,4),且X与Y互相独立 求X+Y和2X-3Y 数学练册能力培养与测试七年级上册的第三页答案 aqua we belong to the sea 古代炼铝是用比铝更活泼的单质钠去还原铝的,我想问这钠怎么得来的? My father often reads books in the evening.(对reads books 部分提 古希腊和古罗马的文化主要表现在哪两个方面 宽裕的近义词和反义词 急急急急急急急急急急 混合气体中甲烷CH4的容积成分是90%,二氧化碳的容积成分是10% 纯物质是由什么组成的 初中化学元素种类有三种? 下列根据实验操作和现象所得出的结论正确的是( )