y根号a2-x2的导数

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这个是什么字,回答定有好评 _________have you been to the History Museum? -------Only onceA.how often B.how many times 我想交个英语口语好的朋友练习口语,因为我有个机会只给我一年时间让我口语达到一定水平进一家公司,我很 第31的第一个字怎么读? “颀”字怎么读?快!第一个有好评! 写一件表现人与人之间真诚关心帮助的事, 以温暖为题,写一件变现人与人之间真诚关心, 英语非谓语动词题目Playing all day,you will waste your valuable time.为什么用playing 而不用to play,having played,played 非谓语动词英语题目do you wake up every morning ( ) energetic and ready to start a new way feeling,伴随状语,为啥不能填feel,你看and 并列结构,后面有ready.都是原形,feel还不是吗 英语 非谓语动词的题目I don't mind ____ the decision as long as it is not too late.(2000.1) A.you to delay making B.your delaying making C.your delaying to make D.you delay to make 请具体分析一下为什么 英语题目, 谢谢,非谓语动词?The bell____the end of the period rang, ___our heated discussion.A. indicating, interruptingB. indicated, interrupted为什么选A 不选B谢谢,还是不太懂麻烦详细一点啊,谢谢 what 's it like there是主系表结构吗 说一个人年龄的英语句子怎么写 some books are here and there 同义句 did you have a good time in england? 英译汉1、I went to the supermarket.2、Did you have a good time in England? 英语翻译 这题怎么翻译? 在我们心目中,你是大树,你是海洋,你是天使,照这样仿写句子 Кого-нибудь怎么翻译如题 英语语法 非谓语动词中的动词不定式 如何区别他们是做宾补还是定语?例句:1 You should get them to help you 2 She made a decision to go abroad for a year 哪句是宾补 哪句是定语 动词不定式作后置定语和非谓语动词的动词不定式表目的有什么区别 非谓语动词句型非谓语动词都有哪些句型?(+do,+to do,+doing)最好全一些, fun的形容词、heavy的副词和bright的副词 1.heavy(副词)_ 2.wind(形容词) _5.quickly(形容词)__7.gently(同类词)__ 8.soft(副词) _ mouth的形容词形式,gentle的副词形式,heavy的副词形式,angry的副词形式 这几句英语我实在是看不懂,请高手翻译一下.谢谢了.有词组说一下词组谢谢!谢谢!which shines in every home and makes it one of the brightest and dearest places on earth.And they both cried out,"see our house:our own home is I h___you'll have a good time. Did you have a good time中文 bright的副词 虚拟语气的句型是什么? 12mm厚的玻璃,如果不用玻璃刀,用什么能把它割开的好?