垄断条件下竞争的特点

The writer had lost his money.He felt upset.He must have been worried.请问:为什么要用have been,好象不是被动语态啊 Jack's father is quarrelling the teacher （ ）Jack.括号内用“with”还是“for” Bird flu is still very serious in some countries.Yes,something ( )to stop it from spreading.A.can do B.is doing C.must be done D.have to be done The destruction of the rainforests is the direct result of logging activity.翻译 英文direct the course of an activity 翻译 求助Android：The markup in the document following the root element must be well-formed.我是按照书上的代码写的,怎么会出现这种错误呢? android里面有多个activity如何设置一个为主界面上的activity android layout xml error:Error parsing XML:junk after document element\x05\x05Multiple annotations found at this line:\x05- The markup in the document following the root element must be well-\x05 formed.\x05- error:Error parsing XML:junk after docume 试给出数列Xn不以有限常数A为极限的精确定义 试着写出数列{Xn}n=1到正无穷不以常数a为极限的数学定义,并以此考虑{(-1)^n}n=1到正无穷极限不存在 设数列Xn有下列定义：Xn=1/2Xn-1+1/(2Xn-1),(n=1,2,……)其中X0为大于零的常数,求n趋于无穷时,Xn的极限上面的是Xn-1,即比Xn小的一项,不是两倍的Xn减一. all what还是all that ,为什么? 形式宾语the result shows that.能不能说成the result shows （it） that... 有时用which 有时用in which 还有什么in that 怎么转换?还有which和that 的区分 must not Your writing is good except for the spelling.汉意 1.your composition is good _____a few spelling mistakes.为什么不能选except for选besides72.your composition is good _____a few spelling mistakes.为什么不能选except for选besides3.——How about your trip to Qingdao?——It could not hav 同义句 Your competition is very good except for a few spelling mistakes.尽可能多.————except for 尽可能多.别复制. She is e___ when she hears the good news. 成功之路是什么颜色的? I had no even a vague idea —was going to happen A of what B of whichI had no even a vague idea —was going to happen A of what B of which为什么B不对? I had not even a vague idea of what was going to happen.是宾语从句还是定语从句,求分析 I had not even a vague idea ___ was going to happen.A.in which B.of which C.of what D.in what I had not even a vague idea of what was going to happen.这里面有什么从句?为什么不能用of which 求一个6个演的英语话剧,5女一男的,30分钟左右!急!最好是喜剧,单词不要太深,高中-大学水平10分钟后就可以了，嘿嘿 我想买一本李阳疯狂英语的英语作文成功之路,但书店里不卖,淘宝上也只有旧版的,我该咋办呢? 作文成功之路或失败之路 求作文成功之路-我时代残霞饮血全文 快啊英语同义句转换,Please tell the difference between this one and that one.Please________this one________that one. 这个句子we should be careful how much we eat of it.有疑问!为什么不是careful about how...什么时候不要about? 在线等,王戎七岁.问：1、翻译句子树在道边而多子,此必苦李.2、请用简洁的语言回答,这则故事告诉了我们什么道理? 选用方块中所给的词组的正确形式填空词组：no shirt\shall we go there\how do we\for you\some hot dogs\play basketball\go to the theatre\in the afternoon\a bottle of milk there's in the fridge there's on the bedlet's go and go to the