四年级作业分析

Can you sing an English song?什么意思 she can sing an english song 变复数 I ____ ____(sing) an English song （1）、某学生计算2x的二次方-5xy+6y2加上某代数式,由于粗心误算为减去这个代数式而得到7y的二次方+4xy+4x的二次方,你能帮他改正错误 小九九是什么? -They can't sing English song .-______________.A.So can we B.Neither can we C.Neither can't we D.We either麻烦说明理由。 AABC四字词 已知a-b=-1,则式子3-2a+2b的值为 已知代数式a+b的值是3,则式子2a+2b+1999的值 如果一个正比例函数的图像与反比例函数y=6/x的图像交于A（x1,y1).BC(x2,x2)两点,那么（x2-x1)(y2-y2)的值为? 高中数学sin和cos2倍角公式怎么记都记不好,该怎么记 We can sing a song.怎么改一般疑问句 是can you 还是can we,为什么 数轴上到原点的距离不大于2的所有整数有---它们的积是---和是---|a|﹦1,|b|﹦1／2，且a、b同号，则|a＋b|＝＿＿已知2＜a＜4，化简|2－a|＋|a－4|=＿＿ 在数轴上,到原点的距离不大于3的所有整数是若0 数轴上与原点距离大于2且不大于4的整数点有多少个（急!） I'd like to sing an English song with you.改为一般疑问句 怎样化简：2x²-2y²+3xy-5y²+x² Can you sing a song ________ English?I work ________ Monday to Friday.用合适的单词把句子补充完整：He is ill,so he is staying ________ bed. 2x²-3xy-5y²=0,求(x-y)除以(2x+y)的值,求出x／y=﹣1或x／y=5/2后怎么做? 铝型材的拉直工艺有什么作用 铝材质的灯有什么优点铝材质的灯有什么优缺点?合金压铸、不锈钢的灯又有什么优缺点 一道英语题嗷嗷嗷连词成句1、airport home we the from just came 2、here wonderful a they visit had 3、surprised parents both my were 4、do don't with waht know i will we them 5、at it much polite dinner is too talk to ..然后在翻译 abb压力变送器 怎么调整零点和量程 真空压力变送器的零点、量程的检定方法 零点迁移值6mV DC,量程为126mV DC,变送器输出电流为12mA DC,被测信号多少伏 科学记数法中的指数n原数的整数位数少什么 We just (plan) to go to the library this afternoon.3.— you (go) to school by bicycle?— No,I don't.I go to school by bus.4.He (not want) to buy that piano in the shop.5.— What does Jim usually do during the morning break?— He usually (play) ta 几道英语非谓语动词的练习题- - 1.You'd better (　)at homeA.don't stay B.not to stay C.not stay2.Do you know ( )with the meatA.what to do B.how to do C.when to do3.The house is not big enough ( )A.to live in B.to be lived in C.to live4.Sh 英语题来人人人人人人人嗷嗷嗷 英语题嗷嗷嗷嗷嗷嗷嗷嗷 用双法兰仪表测量容器液位,​当仪表的安装位置上移一段距离,则仪表零点、量程会发生什么变化? 铝水 有什么用,制造铝锭么?