求下列函数的n阶导数

this afternoon发生的事,用什么时态? sparkling. He never tells a lie 用英语解释句子 As there were strange marks on the X-ray plates taken of the mummy由于在给这个木乃伊拍摄的X光片子上有奇怪的斑点请高手们分析一下句子成份,过去分词taken如何转成定语从句?与主句时态有关吗? 单词造句:and,she,is,tells,never,Tina,a,hardworking,always,lie. He never tells a lie,---?A.is heB.does heC.don't heD.isn't he She never tells a lie,does she?He was seldom late,was he?yes,shedoes,no,she doesnt.的意思翻译一下 my pens are in the pencil box.改为一般疑问句.是对“box"提问，_____are________pens? The long pencils are my sister's.(改为一般疑问句）怎么改? htese are my pencils 改为疑问句 water怎么读 water怎么翻译怎么读? water 怎么读? the traffic accident happened ______ the boy last week.(介词填空) Was it in front of the office()the traffic accident happenedwherewhichthatin which我选了where 为什么是that呢 From them on we are only strangers? The only funny things we heard that evening came from the advertiser at the beginning of theprogramme这里的that是什么用法,翻译是：那天晚上唯一有趣的事是那个报幕员的开厂白.这里哪有开场白这个词, He has to do () this afternoon.A.many work B.a lot of works C.a lot of work He has to do ___ this afternoon.A.many work B.a lot work C.a lot of work D.a olot of works 1.Amy has (forty—two) books.对打括号部分提问.2.Tom has a story—book.改写成一般疑问句.3.Daming's T—shirt is (black and white).对打括号部分提问.4.in,desk,put,your,pencil,your.连词成句.5.Do you have a computer 就这些 she never tells my secrets to others（改成同义句） she never tells my secrets to othersthere is nobady else in the classroom改为同义句he did not go to work because the weathe rwas bad改为同义句he spent two hours doing his homework last night改为同义句her brother went to bed after he fi i can tell May anything because she never tells others my secrets 改为同义句i can tell may anything because she can ____ ____ ____ keep a secret 排除 I can tell May anything because she never tells others my secrets.的同义句? daniel never rells my secrets to others同义句daniel always（）（）（）me cause of concern 还是cause for concern 还是有什么区别的这两个 what's the meaning of “The phenomenon is a serious cause for concern.” 这里cause什么意思就是说这个现象是一个严重的要关注的原因咯？ ...a cause for concern.While it is true that this is a cause for concern, let us not overreact请教a cause for concern的意思谢谢 There must be a traffic accident last night.这句话是否正确 怎么把.txt或.doc转换成.xml,用于导入有道单词本的 Last night there was a traffic accident .The children were hurt,but no __were lost.A lives B life选哪一个答案呢 可以导入到有道4,6级单词,是XML格式的,给我发一份吧!非常感谢!邮箱ly_lpz_0526@163.com