中国有多少会俄挺的人?

打工的定义是什么难道高学历就不用打工?只能说他们对社会的付出比较大?太自私了 已知x的平方-3y的值为2,则-3x的平方+9x-6的值为 解释意思 求解释这个章什么意思 f(x)=ax+b.x属于[0,1]时,f(x)的绝对值小于等于1,求证a,b绝对值的和不大于3 已知f (x)=x^2+ax+b(-1 F(X）=X²﹢AX﹢B 证明F(1）F(2） F(3）(要加绝对值）中 至少有一个不小于½ ） What class does he in? What class is he in? 这2个句子有嘛问题? 我的本意是他在哪个班 已知x=√5+1,求代数式x2-2x+2的值 the mountain is 1000 feet ( )the sea level A.over B.higher C.above D.high 为什么 已知抛物线y=x2+2x-1经过点P(m,5),则代数式2m2+4m+2013的值为? The teacher wanted to know___ A.what does Jim say about his trip to BeiJing B.what did .C.what Jim says about his trip to BeiJingD.what Jim said about his trip to BriJing为什么答案选A 求理解 在代数式(4x^2-2x-5)(1+(1/x^2))^5的展开式中,常数项为 What does the English teacher _______ about the homwork? what does Jim say about Scott?翻译（软件翻译不要来!） a bad storm.what does his teacher probably think about the weather?a,it was the same as the past.b they were not lucky this year .c rain is good for plants.d the weather may be bad next year toowhen ice nelt at the poles,it.a causus b gets warm c goe are you students?yes ane快对空处填单词 Are you a student?Yes,I'm.(这句话哪里错了,怎样订正) Are you all students?提问,怎么回答,yes,we...No...we 2,the eve if Spring Festival 前用On为什么are you all students?Yes,...选择A，we are all,B we all are C we aren't all D all aren't 如图,已知反比例函数y=k/x的图像经过第二象限内的点A（-1,4）,AB⊥x轴与点B；若直线y=ax+b经过点A,并且经过反比例函数y=k/的图像上另一点C（m,-2）.问：P为平面内一点,写出以点A,B,C,P为顶点的平 已知关于x的一元二次方程x²-(K+2)x+2k=0(1)求证：无论k取任何实数值,方程总有实数根(2)若等腰三角形ABC的一边长a=1,另两边长b、c恰好是这个方程的两个根,求△ABC的周长 【few】How often do you go to the library?--______.B.Every few days C.Each third day D.Every a few days 请问为什么是b啊, on weekends ,we often go to the library oron weekends ,we often go to the library or（）on the computer togetherA.watch B.workC.readD.get I go to library very often.我第一次看见过这样的句子,often放在句末.often是频度副词不是应该放在行前be后的吗? how often do you go to the library?是特殊疑问句巴 有又香又脆这个词吗 步绿匆匆这个词语对不对 有 翠绿绿 怎么腌黄瓜又脆又绿 解方程计算题需要过程和解一道是一道写好的给评分 9x的三次-27x的平方 用两个反义词组成一个三个字的词语 例：问答题 阴阳图 盈亏表一共要4个！！！！！！！！