潜龙腾渊的意思

He must be in his room now ,_____?A.mustn't B.isn't he请注明原因,3Q 甲乙两辆汽车同时从AB两城相对开出,经过八小时相遇后甲车继续向前开到B城还有4小时,已知甲每小时比乙快3 甲乙两辆汽车同时从ab两个城市相对开出,经过8小时相遇后,甲车继续向前开到b城还要4小时.已知甲每小时比乙快35千米,ab两个城市之间公路长多少千米 甲乙两辆汽车同时从ab两个城市相对开出.经过8小时后相遇,甲车继续向前开到b城还要四小时.已知甲每小时比乙快三十五千米,ab两个城市之间的公路长多少千米? The room must be aired请问1 为什么be要用原形? 2 must 本身就有必须的意思?为什么要跟个be? 就算must be是固定搭配,must 本身有必须的意思 不加be不可以吗? 甲乙两辆汽车从AB两个城市相对开出,12小时后相遇,甲车继续向前开到B城还要6小时,已知甲车每小时比乙车快25千米,AB两个城市之间公路长多少千米 袋中装有一个红球和一个黄球,它们除了颜色外都相同.随机从中摸出一球记录下颜色后放回袋中,充分摇匀后, 有一个布袋中装有1个红球,1个黄球和一个蓝球,它们除了颜色外完全相同,任意从中摸出一个球,摸到红球的概率是 ：记录下颜色后放回袋中,充分摇匀后,再任意摸出一球,两次都摸到红球的概率 把图A绕O点顺时针旋转90度 把下面的图形绕A点顺时针旋转90度怎么画? 善于报复是什么意思? 请大家都来看一看,Mr Smith must be at home because the light in his room is still o___.The monkey ____________ interesting animal.A.is quite a B.are quite an C.is quite an D.is a quiteMy father often goes to work by bus ____?A.is he B.does he 蓄意报复是什么意思? He must be at home,__the light in his room is on.A because B asC because ofD forHe felt tired,__he kept on working.A andB orC butD for 报复和理想是什么意思 填不定代词或这副词 Maybe ______ is in the room because the light is on填不定代词或这副词There's isn't ______ watching TV at the moment .Please turn it off.Is____ here? NO,John has asked for a leave Do you believe _____ in ads? 报复是什么意思? The light is on in his room ,I'm sure he ___back A.must be B is C may be 选什么,为什么 The light is out in her room.she to bed A.must have gone B.had gone C.must be going D.must go答案是选A的,为什么,我不懂.这个是考 have gone to的用法? 打勾的那道题 打勾的那道题, 求打勾的那道题 打勾的题,会那道题做那道 打勾的两道题… 如果函数f(x)=2^(2x)+a*2^x+a+1有零点,求实数a的取值范围.根据题意{a^2-4(a+1）≥0；-a/2＞0；a+1＞0}或a+1≤0……帮忙解释这样做的原因. 谁懂给解释下啥意思? 抗日战争胜利后,中国国内形式发生的新的变化是什么?这是试题, numbers from 1 to 9 are used to form three formulas.eachn number can only be used for once.and only plus sign and multiple sing can be used.please write down the three formulas.求求大家了. 求解释懂英语的帮我回答一下For the world you may be one person.But for one person you may be the world!这句话的大概意思是什么? 中国抗日战争进行了多久中国抗日战争进行了多长时间? 已知二次函数y=f(x)的图像经过坐标原点,其导函数为f'(x)=6x-2.数列｛an｝的前n项和为Sn,点（n,Sn)(n∈N＊)均在函数y=f(x)的图像上,求数列｛an｝的通项公式. 下列各句中,加点的成语使用不恰当的一句是（ ）（3分）A．王安忆笔下的上海的弄堂,有神气的新式汽车,也有沉旧的黄包车；有市民们的流言蜚语,也有阴谋家的窃窃私语,还有革命者的策划