麻黄碱重结晶

求文档:历史与社会八年级上册总复习提纲 英语翻译:{特别是谓语动词用单数还是复数}这些绳子的长度都是3米.(用到 length of) 有谁知道八年级下册历史与社会的总复习提纲?还有八年级上册的每个单元的主观题题目和答案? 英语中国家人的谓语动词应该用单数还是复数像中国人、西班牙人等等后面应跟单数还是复数不好意思，是我没说清。我们老师说the chinese 谓语动词用is我想知道有没有例外。另外the chinese 在英语动词不可修饰动词,那为何又短语begin crying,begin running等 英语中,分数、百分数如何表示,当它作主语时,谓语动词用单数还是复数? 在括号内填上适当的介词1.Do you know ()Mr Green is country?2.Selina often writes to her pen pal () Australia. 一、选用括号内恰当的介词填空.圈出下列句子中运用不恰当的介词,将正确的答案写在横线上拜托了各位 谢一、选用括号内恰当的介词填空.1.What’s this (at,on,in)English?2.Christmas is (at,on,in)the 25t 在括号内填上合适的介词（急!）1.The school is in front of the bank.The bank is ＿ ＿ the school.2.I was excited ＿＿＿ the trip. 求关于time所有词组, I'm afaid there are not any vegetables in the fridge,_______ _______? Are there any meat in the fridge?修改病句 A:Mum,I 'm hunrry.Are there any cakes in the fridge?B:Yes,there are (是对话B:Yes,there are ( ).A:Can I ( )one,please?B:Sure,but go and wash ( )( )first.A:OK,Mum. cost是什么意思 cost to cost THIS ORDER WE WILL BE SELLING LIKE COST TO COST BUT WE WILL NOT TAKE OUR STEPS BACK FROM OUR RESPONSIBILITY AND RELATION.这个是在这句话里面的, cost for cost center是什么意思 coupled with 连接多个主语是,谓语动词用单数还是复数啊? there be 句型用法有什么注意的? 我想知道 there be 句型的用法 tom often （reads books） in the evening .对打括号的句子进行提问____ ____ Tom often ______ in the evening Tom often doesw some _____(read) in the evening.这些的形容词是什么：wind rain cool的反义词 sunny的名词 scarf的复数 三角函数cos2t如何变形成1-cost^2 简单的三角变形cos2t如何变形成1-cost^2 英语翻译我想要这个歌的英文歌词,并翻译成中文 ∫1/1+cost dt为何解答过程中的tant 不是tant/2 start与begin都是瞬间动词吗?The film____when I got there?A：has begun B:had already started C:begun D:have already begun along with的用法 除了···以外的例句 close ,become ,begin ,start ,finish ,end ,lose 都是瞬间动词啦,要用现在完成时表达,换成咩? start是瞬间动词吗?瞬间动词还有什么用法?是不是不能用现在进行时? 四、句型转换（共10） 36.They often draw pictures in the evening.(用now改写句子) They __________ __四、句型转换（共10）36.They often draw pictures in the evening.(用now改写句子)They __________ __________ pictures now.37.Lin there are some soup in the bottle哪错了