The number of the students ___.

相关推荐

• He is one of the students who are never late.什么意思还有 He is the only one of the students who is never late.
• He is the only one of the students who is never late.
• 阅读选择：We have a nice classroom.The windows are big and the wals are white.There's a bigblackboard on the front wall.A big desk is near it.It is for our teachers.There's a map of China and some other pictures on the wall.There are forty small desks and chairs in the room.They are for students.There are sixteen girls and twenty-four boys in our class.There are some flowers on the teacher's desk.They're for our English teacher.She is  a good teacher and w
• 1.Mr Green often helps those students ____he thinks are not quick at their lessons.a.whom b.who c.when d.becausethose students 不是help的宾语吗?为什么不选a 2.The old man has two sons,____looks like him.a.all of them b.both of them c.each of them d.neither of them 先排除一下a和b,c 和d都可以用单数形式啊,为什么答案选d而不选c?3.____to see the film please raise the hands.a.Those who wants b,those who want c.Any one wants d.People want4.The reason ____being late for the meeting was _____his l
• 一个高中英语单选Students are expected to dress -----,suitable for weather,and in good tasteA accurately B adequately C essentially D attractively请说明理由
• 最好8级水平帮我改一下哈 语法错误和拼写错误After a well-rounded study,I know that the CGA course offered by ZUEL is a program between ZUEL and the Certified General Accountants Association of Canada.It mainly has 3 goals.The first one is to acquire a master degree of the ZUEL.After that,students taking the CGA course will try to get a CGA professional certificate.The final goal of the course is to get a MBA degree in Canada.It is known that a good command of English is si
• Students should stay in this room.Their names are on the list.两句并一举
• Several hours later,with the help of the police ,the students managed to escape from the dangerous place ,________A hungrily and scared B hungry and scared C hungry and scaring D hungrily and scaring.选什么?为什么?
• Reading for pleasure is the easiest way to become a better reader in English.important way.Some students say they don't want to read for pleasure.They saythey want to use their time to lcarnthe rulcs of the language and ncw words.They say that pleasure readling is too easy.Many experts say pleasure reading is very important for learning English.Dr.Stephen Krashen,a famous expert on learning languages,says that pleasure reading helps you learn many imp
• 请各位英文大侠来帮我看看这段英文有没有语法上的错误,1．\x05It is reported that ten big cities in China are being ranked among the top twenty cities with the highest pollution index in the world.This means it is high time we did something to bring the situation under control.Many factors are contributing to the deteriorating situation:industrial wastes pumped into the air,the lakes and rivers; a increasing number of automobiles crowding into the streets; the widespread use of pl
• 强碱弱酸盐水解若MA为强碱弱酸盐(M+为强碱的阳离子,Aˉ为弱酸根离子)水解,则有:c(MA)==c(Aˉ),c(MOH)==c(OHˉ).为什么?要说清理由!如果我们用HA表示酸,MOH表示碱,MA表示由它们生成的盐,那么盐MA水解的方程式为:MA+H2O←→HA+MOH(可逆符号)其平衡常数为:K==c(HA)*c(MOH)/c(MA)*c(H2O)在稀溶液中参加反应的水分子比率很小,c(H2O)可视为常数,则K*c(H2O)仍为常数,设为Kh(h为下标),有:Kh==K*c(H2O)==c(HA)*c(MOH)/c(MA)Kh的植称为盐的水解常数.若MA为强碱弱酸盐,则c(MA)==c(Aˉ),c(MOH)==c(OHˉ)注意前提:在稀溶液中参加反应的水分子比率很小,c(H2O)可视为常数.出自人民教育出版社化学选修4(就是刚高考过的这界高三用的),62页第6行.(科学视野).书上的,不是一般的盐类的水解.
• 等物质的量的弱酸与其对应的强碱盐(或弱碱与其对应的强酸盐)混合,溶液酸碱性如何判断