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乙炔的酸性比乙烯大,因为三键电负性大.但氢卤酸中,氟电负性大,为什么酸性小? 碘为什么电负性小.他是氢卤酸中酸性最大是不是与之没有关系的.他不是电荷多么.为什么电负性小. In this country,their favourite animal is_____.AIn this country,their favourite animal is_____.A.beaver B.panda C.kangaroo This pair of trainers ______(be) black.My favourite animal is _______(monkey).括号里填什么 this is my favourite 还有别的吗 猜谜语：It is clean when it is black.It is dirty when it is white.What's it 猜谜语 what letter is a plant what letter is a question what letter is a person a with a 添英语单词 一个英语单词、 念 也楼PE 是什么?后面跟的是with 英语单词kid,play with怎么读? 英语单词排序 mom is on going a trip me with my .要有中文意思, 可以说Dogs is my favourite animal 是用is 还是are,animal还是animals?凸^-^凸 my favourite animals are dogs.还是my favourite animal are dogs.哪个对 my favourite animals are dogs用what提问怎么写? lunch room的复数形式是什么 It's a nice room .将下列句子改为复数形式.It's a nice room .将下列句子改为复数形式.________ ________ ___________ room作空间讲时有复数吗? room-mate的复数如题急…… how often do you go home 1.one a week 2.once 3.one 4.once a week 用所给词填入空白处.What do you_____your home town?Do you _______back every week?NO,______.What is your _____ place in your home town?Maybe it's______an intereting piace.come favourite think of twice a month really 脚踩开关在电路图中用什么字母代号? We don't like the young man.He is too ________ A.boring B.bored The young men aren‘t having a party(肯定句,一般疑问句）谢谢啦 The young man was often seen _C____ by the lake.A.to draw B.to drawing C.drawing D.drew为什莫不选A啊而选C 高中牛津英语 录音 advance with English求单词录音,不是人教版的,就是牛津英语~是凤凰出版传媒集团的 advance 可是我翻遍牛津高阶词典，却没有找到advance with这种结构啊？ 问个小问题,是My favourite animal is dolphins还是My favourite animals are dolphins还是My favourite animals is dolphins?晕死了.那个题目是这样问的:Which animal is your favourite?说一下为什么. my favourite animal is lions.my favourite animal are lions.两个句子那个正确?为什么/thanks. My favourite animal is panda.改为同义句 什么是“cellular phone”cellular phone 的英文意思?细胞电话蜂窝电话cellular是取细胞的意思 还是蜂窝的意思 AM,FM指的是什么 the old man stood in a s_____ street and didn't know where to go