有机质含量

cross the out from under歌词里的Even when I cross the line,it's like a lie I've told a thousand times这句话怎么理解? ---- Is everything all right?---- Yes,we were very much afraid _________ our house when we wer---- Is everything all right?---- Yes,we were very much afraid _________ our house when we were away.A.for B.of C.in D.from为什么? 人教版初中阶段化学所有的复分解反应类型比如什么盐+强酸===盐+弱酸 还有什么 强金+什么什么的===弱金+……我们上课讲过的,我忘记了, The Jordans的《White Room》 歌词 写三个不同类别的复分解反应的离子方程式 I NEVER LEFT THE WHITE ROOM怎么样 是不是不属于复分解反应类型的就不反应 What did he do yesterday.和what did he does yesterday.的区别是什么! 1、what did he ____yesterday afternoon?A、do B、did C、does2、Did you see any animals on the farm?_________A、Yes,I do B、Yes,I did C、No,I don't3、_____ was your trip yesterday?WonderfulA、What B、How C、When4、We visitsd a factory.It i "I have been dying to see you .I am crary about you .I have been dying to see you .I am crary about you . 如果(x+1)(x的2次方-5ax+a)的乘积中不含x的2次方的项,则a为 what he is 和what does he do的区别 what does he do?与what is he 有什么区别好像都是询问职业的 What does he do?He is a policemen.修改病句 问几道数学题．谢拉!六分之一大于（）大于七分之一四分之七小于（）小于三分之七 x的m-1次方 乘以X的m+1次方（m>1) AD是三角形ABC的高,MN是边BC的垂直平分线,三角形ABC的面积是150平方厘米,求三角形BDN的面积.(图自己画一下拉) 过去分词具体是啥? 过去分词是什么意思 已知平行四边形abcd面积是98cm2平行四边形abfe面积是平行四边形efcd的108倍,求abfe的面积 求平行四边形EFCD的面积是多少? 矛与盾怎么样 介词填空we usually look (at ) left ,then (/ ) right before we cross the road.不甚感激! He was often late for work ,and that finally ___his job.P59三星笔试A cost B spent C took D lost,我选了D,为什么是A 如图,在直角梯形ABCD中,AD‖BC,∠B=90°,AB=8,tan∠CAD=4/3,CA=CD,E、F分别是线段AD、AC上的动点（点E与点A、D不重合）,且∠FEC=∠ACB,设DE=x,CF=y.（1）求AC和AD的长；（2）求y与x的函数关系式；（3）当△EF 如图,在直角梯形ABCD中,AD∥BC,∠B=90度,tan∠CAD=4/3,CA=CD,E,F分别是线段AD,AC上的动点(点E于点A,D不重合),且∠FEC=∠ACB,设DE=x,CF=y（1）求AC和AD的长（2）求y与x的函数关系式（3）当三角形EFC为等腰三 Wild animal is the friend of mankind 这里mankind可以用human代替吗? 单句改错Most of our friends are human beings,and we all make friends with animals and even things.Most of our friends are human beings,and we all make friends with animals and even things改错只能改一个单词(+上或-去或替换) 小明和小刚从相距20千米的A、B两地出发,同向而行,小明在小刚后面,并比小刚早1时30分出发,若小明的速度为8千米/小时,小刚的速度为6千米/小时,问小明出发多少时间后能追上小刚?（用方程解 甲、乙、丙三个箱子里面共有384个小球,先由甲箱取出若干箱放进乙、丙两箱内,所放之数分别为乙、丙原有之数,继而由乙箱取出若干放进甲、丙两箱内,最后由丙箱取出若干放进甲、乙两箱内 在所有六位二进制数中,至少有连续4位是1的数有多少个 x的四次方-16分之1y四次方