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2010年和2011年发生的奶粉三聚氰胺事件?奶粉中那些品牌含三聚氰胺?那些不含? 如果X·y=20,那么x和y成（）比例 7：x=5:y,x与y成比例吗?成什么比例 如果x分之20=15分之y,那么x和y成什么比例?为什么? 如果Y=x分之20,X和Y成什么比例,Y:20=几比几, 字典用英语怎么说? 在有理数集合里定义新运算“*”,其规定为：a*b=-2(a-b),试解方程：（x*3)*4=(2x）*2 联想法背单词我背单词大多是通过各种联想记得,有木有和我一样的,不跟我一样的就不要回答了谢谢 SOmeone says,"time is money,"but i think time is (e)more important than money. 法英词典哪个出版社的好?如题 英语字典那个出版社的最好? 什么英法词典比较好呢?而且适合初学者 求一个在线的法英字典没什么特别的要求,输入法文能出英文,要么出中文也行 二成表示什么(百分数) 说一数下面百分率表示哪两个比三好学生人数占20%（2）人脑占人体质量的2%到3%左右（3）上半年完成全年计划的60% ,英语The shoes are too big,so I'd like to try a___ pair. 谁能给个英汉互译带声音的词典 英语翻译：这里的大自然是没有受到任何世俗的污染,它是清新而纯净的 百分率-百分比-百分数一样吗? 祖国地图上都有什么颜色, 英语提问1第四题4、＿＿＿a successful actor,you need tk learn the vocabulary＿＿＿on stage.A Being,using B as,be used . C To be ,used D Like ,to use请问老师为什么不选B 提问一道英语题目.To prevent iron knives from rusting ,we can keep them away from oxygen and water by ___( ) A. wrapping them in paper B. putting oil on the surfaces C. putting them in plastic bags 并且翻译 I can't remember__________ you started doing the work.A.that it was when B.when it was that C.when was it thatD.that was it when 正确答案是B,为什么答案不是C? 提问 一道英语题目~题目是: What does the professor mean when she says this:下面是题目的对话(student) It shouldn’t be too hard to do better. In fact, it would probably） be difficult to do much worse.(professor) You won’t get 羊毛含88%怎样解释百分数 三成就是十分之（ ）,用百分数表示是（） 百度地图,路线不同颜色代表什么? 英语翻译potato chips翻译一下My mother asked me what CD I listened to r_______ 填空It'good ______(eat) lots of fruit.填空 3道填空适当形式1,the _____(much) you practice,the _______yourEnglish will be .2,he can't tell the _____(different)between the twins.3,both girls go to lots of________(party).注意比较级形式 1.The weather ______(become) cold in a few more days2.As soon as we get here,we ______(write)to you3.I _____(ring) you up as soon as I _____(get) to Nanjing 九折 写成百分比怎么化 九折的小数,分数,百分数是多少