Liu Wei is my classmate, as well as my best friend. He is the tallest in our class. And he is very kind and helpful. We choose him to be our monitor. A few weeks ago, I asked for a two-week sick leave. He helped me learn the missed lessons. He is good at maths and physics. He won the first prize in the physics competition. He also does well in English. He likes sports very much, such as playing football. I should learn from him.
最新问答: 有机物A是一种广谱高效食品防腐剂,如图1所示是A分子的球棍模型.回答问题: 三次多项式拟合的相关系数.看到你回答其他人的一个问题.写到:只需三步:1.计算模型残差平方和RSS.2.计算Y的样本方差 1.如何判断化合物是否溶于水?2.例:BaCo3 MgSo4 Fe(OH)3 NaHCO3试判断 解方程 (1)20.52x-(1-0.52)x=80 (2)43x+7=32-2x (3)2(7x-5)=3 疲倦是不是贬义词? 两种液体 生成氮气 劝君更尽一杯酒,西出阳关无故人.表现了作者什么?也说明了什么?人们常常引用这两句诗什么? 初中英语单项选择:——where is your father?——__________.A.here he comes Mr.Brown-----(teach) us English lash term. 电解CuCl2溶液要复原只能加氯化铜固体吗?为什么不能加溶液,里面的水有什么影响 谁会这道题:— Thanks for the __ 已知阴影部分的面积是160平方厘米,求环形的面积. 如图是由平面上五个点A,B,C,D,E连接而成,求角a+角b+角c+角d+角e的度数是多少?要明确的步骤. 把半圆分成______等份,每一份所对的角的大小是1度. 大海上波浪.是风的作用吗?没有风就没有波浪吗 关于压力和压强的一道题★★★天才快来☆☆☆◆〓■■〓◆ 求函数:y=e^(2x)-e^(-2x)的单调区间和极值? the letter _ _(must post) at once 被动语态 北京水立方鸟巢建筑英文怎么写英语翻译 非常感谢的英文怎么写