乙醇乙醛乙酸的鉴别

teacher's what English is name you 这个怎么排列? and 的词性 是词性 不是介绍他的意思 and是什么词性 and的词性 and前后的词性问题Then it sponsors lots of symposiums and a credibility project dedicated to wondering why customers are annoyed and fleeing in large numbers.为什么这句话中annoyed and fleeing ,and前后的词性不一样. 1.I have only $10 and $20 bills in my pocket.There are three times as many $20 bills than $10 bills.I have a total of $490.How many $20 bills do I have? suit指什么衣服 There are (t ) of people in the zoo填空 I play football with myfriends every day【把every改成tomorrow】 用什么时态来强调经常性动作?如 he XXX football with his classmates every Friday afternoon. I am w【】 to tell you some changes in our school 同义句There are people everywhere at the concert.There are people＿and＿at the concert.急用! He played football with his friends l---------Sunday I only have I allowed you. I am always on time 准确点的 seconds to break to have a break 1.street the there is black car it German a is big on也是连词成句 we had to( )the house as we had lost the key A.break out B.break into C.break through D.break u选什么,为什么 Lack of punishment seems to give youngsters licence to break the law.翻译,并语法解释. I see a big mountain,a city ,a fast black car,a road,a big park and a little pink pig.这一段话什么 有没有比权力这个词好的,但意思不变?快在“我的权力我做主”这句话中. 怎样使耳朵变大 经常对耳朵拉伸按摩会损害耳朵吗 所以求益耳的所以是什么意思 not to break和don't break有什么不同. 怎样区分custom和costume貌似打错了,反正就是一个是风俗的意思, suit和costume的中文意思中的服装,在英语中有什么区别?无 ____ so many profits have been made in the past three years is the strongest argument for continuing the businessA：What B：Since C：That D：As things,in,are,the,now,car连词成句 The car are in the things now.这句话对吗? All things are in the car now.改错快来回答可老师说题目没错，帮帮忙再想想．也许now不用加呢？ 这些字怎么念?有什么含义?怎么造词?(月+利刀旁)左右结构, (缴丝旁+乞)左右结构, (单人旁+仓)左右结构, (山字旁+己)左右结构, (王字旁+干)左右结构, (三点水+乞)左右结构, (左耳刀+井)左右结构,