银离子沉淀颜色

In the past few years,there ______great changes in my hometown.A.have been B.were C.had been D.are一定要说明清楚为什么! There______great changes in our hometown over the past 15 years.A.has beenB.have beenC.wasD.were 他们在同一家医院工作. 我有个幸福的家庭. 我爱我的家. 汉译英,英语试题 染发蜡笔跟画画的蜡笔一样么怎么我见那种染发蜡笔还有马利的- - 画画是ps合适还是paint好呢?我现在一直都是用ps的,但是听说paint有好多笔触,难道paint好吗,如果论画的话,paint还有哪些其他不同的地方? 怎么快速提高孩子的英语成绩 用make,read,ride,run,say,see,win,eat,get,go以及他们的过去式造句 bark clean cry drink eat ride sing sit skate的过去式是什么? 麻烦帮我找下know,put,ride,ting,sell,grow,spend,show,sing,sit,sleep的过去式.对了，还有understand,write,blow,bring,buy,catch,cost,cut,dig,draw,draw,dream,drive,fall,feed,speak.如果实在不行，可以只答你所知道的。 sit的过去式是sat还是sit 帮忙把下面几个词翻译成英语 危害,严厉的,随意的 我们都受伤了,用英语怎么说呢?用injury这个词 portray,draw,paint区别? ride过去式 ride的过去式 ride的过去式是什么 ride的过去式和过去分词还有break,read的过去式和过去分词 如何提高托福口语 Two days is not enough ,we need days A.other three B.more three C.three more D.three another 1.Here are three men,but we need ___?A.other two B.the other two C.another two D.more two2.No only___polluted,but also ___dirty.A.is the air;are rivers B.is the air;river are C.the air is;river are 3.The mountain is ___green trees.A.cover with B.cove Here are three mangoes.Do we need _______?A.other two B.two another C.more two D.two more A small car is big enough for a family of three___you need more space for baggage.A once B ifC because D unless 为什么要选D 行李是指放在车里的? drink的过去式是什么 become的过去式是什么 drink的过去式 become的过去式 是 need only 还是 only need 5楼说的对吗？如果对他的答案最全面 Always only myself when i need you. The only one I’ll ever need,my life is you and me.求翻译 把make kites,go to bed,watch TV,do morning exercise,make the bed,pick up leaves,catch butterflies .改为一般现在时和过去式造句. 英语中年份后面为什么有时加s,而有时不加 把这些单词改为一般现在时和过去式造句把make the bed,set the table,wash the clothes,do the dishes,use a computer,go shopping,play the piano,climb mountains,visit grandparents,get up,eat dinner,go hiking,play sports,have English class