微积分中的dx

We can't afford all that money 我们不能负担这么多钱不能用don‘t 为什么? he got a pay raise for his work hard请问这里的work hard错在哪? 2.“what's the matter?”he cried out .3.when did the Greens move here Do you know ...改为带有宾语 We can't afford all that money变一般过去式怎么变? FIFTY THREE怎么样 谁有the strokes的New York City Cops的歌词 it is three fifty in the afternon 对three fifty in the afternon 提问 They arrived in（ ）They arrived in__1.five and three2.five and threes3.fives and three4.fives and threes ___it often____(rain) in Jilin? 关于专利法上的“覆盖”一词的理解以及创造性和新颖性的区别例如：甲乙丙文件的技术特征分别为——甲：A B C ；乙：A；丙：B C；请问在专利法上,是谁覆盖了谁?还是说在判断新颖性和创 专利代理人考试专利法中新颖性,创造性,单一性关系（见补充）若独立权利要求具有新颖性,则其从属权利要求之间必然具有单一性,为什么错误若独立权利要求具有创造性,则其从属权利要求 该不该把心里话跟家长老师说,写一篇英文作文80字左右, She hasn't shut the window yet中的shut是原型吗 求曲婉婷的drenched 空间音乐链接 What changes a pear into a pearl What changes a pear into a pearl?怎么回答? WHAT CHANGES A PEAR INTO A PEARL? internal control over accounting receivable的英文文章 带中文的最好 Account title Balance Debit Credit Cash 198,000 Account receivable 370,000 Supplies 6,000 Furniture Everywhere man has cut down _____forests in order to grow crops,or to use _____wood as fuel or as building material.A.the the B.the / C./ the D./ /选什么、why? 是cut down the forests 还是 cut down forests?是use the wood 还是use wood? half前面什么时候加the 曲婉婷 - drenched歌曲链接 请问:是a four years old boy?还是a four year old boy?正确要肯定的 what do justin bieber's fans like about him? They were surprised that a four-year-old boy should work out such a difficult problem ____ they themselves couldn’t.  A.once             B.then       贾斯丁比伯 What's Hatnin' 翻译（单独解释下What's Hatnin'什么意思,好么?） 帮忙翻译下my four year-old boy tried to start a mosh pit during naptime. a half、the half、halves、half之间 有什么区别今天做完形填空时,遇到这样一个空:That's about _____ of the world's populationA.a half B.the half C.half D.halveshalf我实在是不解. half a world 和 half the world 有什么区别?如提：） offer help这句话什么意思 He stuck to the theory which proved to us that earthquake can be forecast.怎么错了呢?请行家指教!