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How did it come ----- that humans speak so many different languages?--A.across B,about C.downD.out 如何判断水牛的重量 水牛有多重? 一头大象的重量相当于三头水牛的重量,二两头水牛的重量相当于三只雄狮的重量,请问一头大象的重量和一只雄狮的重量比是多少? 一头养了一年的水牛有多重,值多少钱. 碳酸钙化学方乘式怎么写 求一篇以I am going to be a/an开头的英语作文 Shall we plant trees tomorrow?和plant trees tomorrow,shall we 一样?plant trees tomorrow,shall we 这个句子本身可对?A:Hi,Alice!A nice day,isn`t it?B:Yes.Spring is coming.Plant trees tomorrow，＿A:Tomorrow?Tomorrow is not a good day for pla 5.This is the second school ____ I used to work at.填that 还是which? think of 与 think about表达想起意思是的区别 as a result和with the result that有什么区别? DNA存在于哪里 什么是基因?他存在于哪?简答几句话 就OK重要的 The Life and Death of Democracy简介是John Keane写的那本,请问它说了什么?尽量详细一点,因为要写论文所以很急……如果满意的话,所有的分都给您!呃.可以再用中文解释一遍嘛……? 南京南京 CITY OF LIFE AND DEATH怎么样 答Alice（ rides her bicycle） to school.应该怎么问 Kitty rides her bicycle to school.(改为同义句） So ``` that ```和So```as``` 怎么用? 用think of造句如题,要肯定句,否定句,一般疑问句,特殊疑问句,后面要带汉语释意 ）Over the past decades,sea ice in the Arctic as a result of global warming.）Over the past decades,sea ice in the Arctic as a result of global warming.A.had decreased B.decreased C.has been decreasing D.is decreasing 解释一下 Over the past decades,sevice_____in the Arctic as a reasult of global warming.A.had decreased B.more than C.attach D.apply帮忙看下这题 该选什么 理由sevice 打错了，是 sea ice 翻译“天将兴之,谁能废之?违天,必有大咎” 点焊机为什么焊接不结实 （）废俱兴 My name is David.I come from E__ ,but l__ in China now.Last Saturday l v__ Hangzhou with my f__接上面：Liu Tao.Hangzhou is a b__ city in China .We w__ there by t__ .There are many nice places in Hangzhou.We went to the West Lake and t__ many p__ I'm now_________China.at on of in Their names _________Li Lei and David.am is are have 英语翻译RT...晕死，怎么那么多不同答案啊= = IGHT能组成的英语单词,多写一些 It's nine at night.It's time to go to bed.it's the（） Jack is very interested in Chinese.Jack________interest in Chinese.(改为同意句) I think Chinese is very interest.其中的一处错误其中的一处错误 汤姆和小伙伴惊险有趣的生活表现出汤姆的社么