y=5-2(x-1)^1/3的极值

Never是不是等于Be not ever?如果是,用法是be not do sth ever还是be not ever do sth? be not allowed to do 是否等于must not有一道这样的题：选择与画线部分意思相同的选项：l'm sorry!you are not allowed to enter this building(are not allowed to画线）A.mustn't B.won't C.may not D.can't be out or not in 相当于哪个英语单词 a开头的 How large is your bedroom? 英语口语的一些问题如 before= 'forebecause= 'causerunning=runnin'可以在日记里用吗、可以用于书面吗 关于提高英语口语的一些问题本人现在的状态是 能够用英语能和别人交谈 但谈论到一些话题的时候 就感觉 有点说不出 有没有社么提高的方法 像看纪录片?是么?我看的都是比较生活化的 美 it's not good as i'd like it to 谁能帮我分析一下这个句子哦? be as good 环境工程微生物学怎样复习?看着偌大的课本,不知该从何下手,知识点太繁杂了,希望有好心人能帮我分析分析 复习的重点及考题类型. 精子减数分裂携带基因长度想知道 第二次精子所携带基因长度 相比上一次 长度一样 还是会变短 前提是都是正常精子啊~~ 生物老师的问题 1.___ computers not been used,it would have taken them more time to solve the problem.a.If have b.Have c.If had d.Had2.It hasn't been decided whether the equipment ____ at once.a.should put into use b.must be put into usec.will e put into use d.be pu 用所给词的适当形式填空：You shoud thing over the question carefully before （ ）（answer)it急,请尽快帮助,要解析 “我想,网球和乒乓球没人喜欢”用英语怎么说 If there is any time conflict for the event,please send your representative to the Festival. Han Mei e____October a lot because there is the Mid-Autumn Festival.填词 关于精子DNA的问题真倒霉看了一先父遗传的反动文章,知道其不科学.请你能解释下不科学的原因吗,精子死后应不会在女方体内留下DNA吧? who can answer my question!please!hurry up!You can _________delicious noodles with tomatoes in our restaurant.They are really yummy.A.put B.take C.try D.drinkright? There is no tomato soup for lunch 和There is not tomato soup for lunch两个句子是怎样转化的?有何公式? My friend _____me.I have to leave now.填空waits for waited for is waiting for was waiting for答案是第二个、好像不对 have to ,time ,I ,friends,tomorrow spend my withh（连词成句） "下次我还来"英语翻译e Really I really enjoyed myself.I really enjoyed myself brought in brought into brought out 的分别意思 He is full of energy的同义句 e用英语翻译1句我从没料到会和他们所讲的这样的一个顽固的老板共识 英语翻译他像母亲,他们俩都是好交际的人（take after） 用英语翻译句子 a bit more和a lot more的区别 英语9.Because if the shortage of coal in England,9.Because if the shortage of coal in England,attempts ________ to use natural gas as source of power.a.have made b.having made c.are being made d.will be making为什么 what this about itjsbgjdbgtjnflangjdfm 请分析下面英语句子结构及其语法现象：（还有the purpose of 是做it的什么成分?）The program leaders believe stongly in the progrom and say that the purpose of it is to give young overseas Chinese the chance to learn more abou