人大英语作业71207

（ ）It took him half an hour to walk ＿＿＿ the（ ）It took him half an hour to walk ＿＿＿ the forest.A.across B.over C.cross D.through It took them half an hour by bus.(改为同义句) The—— ——took them half an hour. it took them harf an hour by bus.(改为同义句) the _ _ took them half an hour. it took him half an hour to walk____the forest.A.crossB.overC.croosD.through 已知a满足|2007-a|+跟号a-2008=a,那么a-2007^2的值为 The child with his teacher often ____(run)for half an hour in the morning.填动词形态. These children often____their teacherA:play an important role inB:keep a check onC:play a trick on D:keep track of 选哪个?为什么?（我现在正在初学英语, The children often help____(帮助） in their study. the ___ (child) are talking to their teacher. Children give their fathers presents or tret them to dinner.At the weekend our teacher often giveus a lot of homework to do ,这两句中的 to各是什么用法 如果f(a+b)=f(a)+f(b),且f(1)=2,则f(2)/f(1)+f(4)/f(3)+f(6)/f(5)+…f(2006)/f(2005)+f(2008)/f(2007)=? a+2/3=b/4=c+5/6,且2a-b+3c=21,试求a:b:c的值. 倒数的大小与原来两数的大小之间的关系是什么 倒数的大小与原来两数的大小之间有什么关系?（要准确啊） 一个零件只有3毫米长,画在图纸上的长是8厘米,这幅图的比例尺是( a、b互为倒数,如果A=1+a分之一+1+b分之一,B=1+a分之a+1+b分之b,比较A、B两数大小.A=(1+a/1)+(1+b/a) B=(1+a/a)+(1+b/b) 加括号的是一个数 a、b互为倒数,如果A= 1\1+a + 1\1+b ,B= a\1+a + b\1+b ,试比较A、B两数的大小. Write about your life 20 years from now .作文.要8年级的水平,要用副词. how about your life in(r )years 解方程:X的3次方-9x=x的平方-9 我花半个多小时读英语.I spend____ ____ half an hour ____ English . 9X的平方=121求X的值 I spend ____ ____ half an hour ____English.我花半个多小时读英语. -x2-2/9x+32/9=0,负X平方减九分之二X加九分之三十二等于0,X怎么求啊? 我花半个多小时读英语 英语 I spend___ ___half an hourI ___English “He spends half an hour reading English every morning"的同义句谢谢了, 用幽默的语言完成对话1.一个年轻人问一个满口假牙的老头：“你的牙齿是你自己的么?”老头回答说：2.一位错过站的乘客慌慌张张的擂门大喊：“售票员,下车!”而售票员迅速说道：同志们 对话时幽默句子 汉字间的幽默对话,这些句子该怎么回答?电对曳说：“好好歇会行不,你这姿势不累呀?”分对掰说：“咋的,当官有架子了,小手还背上了呢?”兵对丘说：“兄弟,踩上地雷了吧,两腿咋都没了?” 有什么幽默的对话,在生活中的,能够说的出来的..我要的是真正的幽默而不是滑稽. 跟女孩聊天的幽默词语 相反数的几何定义：在数轴上原点的两旁,离原点距离（ ）的两个点所表示的数.括号填什么?