1918年中国发生了什么

中华文明的发源地 （ ）和（ ）是中华文明发源地? 中华文明发源地在哪里? 求导线测量的详细步骤? 留作业用英语怎么说 闭合导线测量步骤AB两点已知,CDE点待测,仪器先架在B点,后视A点,前视C点（角度是 刚学的附和导线测量,请教如何计算, 导线测量的内业计算 中国最早的文化出现在什么时候?说具体一点 一道英语选择题..Do you know the---------- boy over there?-----Do you know the( ) boy over there?-----Oh,that's Mr Zhang's sonA.crying B.cried我知道答案是A.但是为什么不能是B.不是都是adj吗 中国文化什么时候才能复兴我觉得日本好象做的不错,虽然都是抄中国的,不过表现的比中国更明显些,中国什么时候能象日本那样做出有中国特色的现代文化 英语选择题___________ kncking at the door?--LukeA.Who's Bwho are C.Who D.whose--How did Vivian cut herself?A.cut;chopped B.cuts;was shoppongC.cut;was shopping D.was cutting ;was shoppingMy best friend _________ for Britain tomorrow and I want to 中国文明是由什么时候算起的之前看初中历史书的时候一开始就是记载神农和轩辕的了,那有巢氏和燧人氏的时代能算入中国文明吗 几道英语选择题with the boy __us the way,we got there earily.with the boy __us the way,we got there earily.A.showed B.showing C.to show D.show书上有几个WITH的结构.with+英语+TO DO STH.例句：With him to help me,I did it well.with+宾 You should be more careful next time.和You should have more careful next time.能同意句转换吗?should have不是加过去分词吗? be more careful next time,will youa will ou b aren't you c don't you d shall we You should be more careful next time. You should do your homework more ______ (careful) next time.说明原因、、 You must be more _____next time.是careful 还是carefully 谁给我英语的所有音标. 检查计算 先观察在计算1x=1*12x=2*13x=3*2*1bx=120中的b是多少? 检查这四道计算 先观察,再计算以知：1 =1 - 1 ; 1 = 1 - 1 ; 1 = 1 - 1----- -- --- ------ ---- --- ---- --- ----2x3 2 3 3x4 3 4 4x5 4 5.计算：1 + 1 + 1 + 1 + 1----- ---- ---- ---- ----2 6 12 20 30 数学计算求检查 冲出亚马逊的英文简介简洁有中文意思做好简单点!谢谢 when you leave the room,make sure the door _____.A.was locked B.is locked C.will be locked D.should be lucked When you leave he room,make sure the door_____.When you leave he room,make sure the door_____.A.was locked B.is locked C.will be locked D.should be locked 选哪个?并请说明原因,TKS! make sure you lock the door when you leave.翻译成中文 There are many computers in the office.Make sure _____ the door before you leave.A you will lock B you lock 选哪个 为什么? 2009年获得诺贝尔奖的中国人是谁? make sure the door is locked before you leave the lab.A.that C.whether 为什么C不对?我要分析.可是根据意思,选择whether是翻译的通顺的。