My name is Jack. I am nine years old.My birthday is on 1st May. Playing games,football, basketball are my hobby. My favourite subject is Maths. My dream is to be an engineer. Although i was born in China, i am an American.
最新问答： （2008•南京二模）已知函数f（x）=ax2+2ax+4（0＜a＜3），若m＜n且m+n=a-1，则f（m）_____ 空气中氧气含量的测空实验中红磷为什么不能用木炭和铁丝替代? 钾9钠0.7铝17白度45的钾长石能值多少钱 拿水壶的英文怎么写 中英翻译The fact that he's said this is quite a departure from w 21.已知椭圆x2/a2＋y2/b2=1﹙a＞b＞0﹚的左右焦点为F1,F2，其上顶点为A，已知△F1AF2是边长为2的 五个连续整数，前三个数的平方和等于后两个数的平方和，求这五个整数． 语文阅读题中,省略号有哪几种作用? 求老师解答：Though they are new 请帮忙将下面句子译成英文,陈经理请陈炳南主任对12号车床的维修过程进行总结,并写出维修报告. We have reached a point ______ a change is needed. [ 如图，已知BC为等腰三角形纸片ABC的底边，AD⊥BC，AD=BC.将此三角形纸片沿AD剪开，得到两个三角形，若把这两个 几道英语题1 The mother asked her kids to stop ( ) and ( )to her.A Would you please__make the child__any more?sorry,but I didn' "第3秒内"和"第3秒末"都是时间还是时刻? I'd like a house. 生日快乐的各国（8国以上）读音（一定要有中文读音,加分大大的多） 李明参加了全市的数学竞赛后,他说:的名次、分数和年龄乘积的2134,他是第几名?成绩是多少? 如何区分to是介词还是不定式?如何知道to后面要加原型还是动名词? 在“The Cutty Sark was one of the fastest sailing ships that h
