单位变动成本影响经营杠杆系数吗

I have been told that the great ball held the day before yesterday ____ a success.A.was proved B.proved C.was proving D.was being proved答案及解析 His success was due to the fact that he had been working hard.把 that换成which His experiment----- (prove) that failure is the mother of success.RT have been taken .i can't find the recorder in the room,it must_____(take) by someone else.分析；答案have been taken.过去被动.问题是有个have,我知道有一种形式是加have的,但我记不起来了.大家提醒下. had had been taken 是什么时态那解释一下两个had分别是什么作用 been taken care of 这个整体是什么性质 还有一个句子只能有一个动词吗?She was glad to see that her old mother well been taken care of 这句话对吗?{see,been}谢谢well 到底放在哪里 在 been 后面还是前面啊 been well 商店有胶鞋、布鞋共46双,每双胶鞋7.5元,布鞋每双5.9元,全部卖出后,胶鞋比布鞋多收入10元,胶鞋有几双 商场有胶鞋、布鞋共50双,胶鞋每双7.5元,布鞋每双5.9元,全部卖出后,布鞋比胶鞋多收入0.2元,问:胶鞋有几双 某店有胶,布鞋共46双胶鞋每双7.5元.布鞋每双5.9元,全部卖完后,胶鞋比布鞋多收入10元,胶鞋有多少双? A.the amount of money B.as more money as C.much money than D.as much money thanIt is said that the female thief they caught was fined five times that she should have paid.为什么选A 这句话怎么翻译 there are some apples inthe trees.一般问句 There are some apples on the trees.（改成否定句） 英语翻译这是什么类型的句子呢? 反问疑问句前否后肯（He doesn't like milk,does he?)如何回答 是否按照事际回答yes或no Doing the experiment to complete the science project 请帮我划分体下句子成分, The request could not find,Please check the DNS and try again.这句话什么意思 Ping request could not find host servername.Please check the name and try again我ping 的是www.baidu.com.这是出了什么问题,要怎么解决? 输入ing ip 后提示ping request could not find host ip.please check the name and try again 翻译The Request Could Not Be Completed Because:Request with error params. ping request could not find host wz315.gov.cn.please check the name and try age in. 想要一个妙珊的英文名 商店有胶鞋、布鞋共46双,胶鞋每双7.5元,布鞋每双5.9元,全卖完后,胶鞋比布鞋多收10元,那么胶鞋有多少某商店有胶鞋、布鞋共46双,胶鞋每双7.5元,布鞋每双5.9元,全部卖完以后,胶鞋比布鞋多收入1 How many children are there in your class? are,many,children,how,there连词成句 children,many,there,your,class,in,how,are连成一句话 We Can Be Both Of God And The Devil,Since We're Trying To RaiseThe Dead,Against The Stream Of Tim 翻译i'm sorry,but i can't let you check out these books I’m told we have taken effective measures we can against the painting ______A.to be stealing B.being stolen C.having stolen D.stealing 英语翻译以下是连接上句：picked up in a day or so. the experiment shows us ___ air has some strengtha.that b.what c.which d.whether选A. 以Less pressure makes better life内容1.普遍存在的压力,同学关系,考试2.我过去的压力：父母的期望3.我成功缓解压力的办法及效果 Your voice makes s____ waves in the air.