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一根钢筋截去8米后,所剩部份比原长的5份之3还多2米,这根钢筋原来长多少米? 已知一次函数y=(3-k)x-2k²+18,k为何值时,它的图像平行于直线y=-x? They talked for six hours straight这里straight怎么用阿? They____(stay) in the park for two hours last Sunday 适当形式填空 地震时在大厦高层怎样逃生? 如何在高楼中逃生 英语翻译Then liked it very much,but they couldn't take it with them ,so they looked for a good place to leave it in while they were away. 翻译:they wanted to find the lost treasure.they had an old map. 翻译：To get much mutton,they kept many sheep on the farm. There aren't many shopping malls in the city,are they?怎么回答?回答如何翻译? 数学单位m、cm、dm2、cm2、m2、dm是什么意思``就是说它们代表的中文意思是什么``` 雅思听力短期提高9月底考过一次,总分6,阅读6•5,其他都是6.目标是6•5最好到7啊.都说听力阅读最好提高,有段时间没练习了,听力怎么短期提高啊. 雅思听力怎么提高?现在一般只得5分.怎么练习好?剑桥雅思的题我都有,怎么练习听力? 为什么sheep复数不加s,即所谓的单复数同型?one sheeptwo sheeps这样不是很好吗? fish复数要加s吗 a lot of traffic是什么意思 I know ( )about traffic.A.a lot of B.many C.lots of D.a lot ⑩ they still don't know and what they haven't ma⑩ they still don't know and what they haven't mastered well.这句哪里错了 A lot of deers are eating leaves at the foot of the hill这句话中哪出错了,为什么错,他是什么意思? 急.50分!求一篇描写人的品质的作文.要有一两件事例来描写这个人的品格.抄都不怕 、只要500多字就可要有一两件事例来描写这个人的品格.抄都不怕 、只要500多字就可以不要 写信 之类的、 there is a lot of traffic on the roads .对 a lot of traffic 提问 When they finished s____ in the mall,they couldn't carry what they bought at all那应填一个S打头的单词, there a lot of traffic?” I heard the voice.but I couldn't___ what they were saying.A.leave outB.bring outC.hold outD.make out选哪项,为什么? What's the matter______ they still haven't answered the telegram?填了that, Lucy and Lily can speak Chinese well,because they ___ China for six yearsA.have been toB.have been in C.have come to D.have gone to Zhou Weilun could hardly speak English three years ago,________?-No,he couldn't .But now he isA.couldn't he B.could he C.didn't he They____China for two years.A.have been to B.have been in C.have gone to D.have come to 收入、支出和结余的关系是:收入=（） 《将相和》这篇历史故事是由那三个小故事构成的,用小标题表示分别是什么?这是我不懂的题 一道物理题,力矩（设物体离D点S′处时木块恰好翻转,此时墙的弹力为零．则有μmgcos30°•SAD=Mg•SADsin30°+mg）很不解,S′既然是到D点的距离,那么cos30°•S′怎么会是小物体的力臂呢. 力矩平衡所受重力为30N的均匀球放在斜面上,球面上C点用细绳系住,牺牲与水平面平行,斜面倾角为37度,求绳的拉力,斜面对球的支持力和摩擦力