08年二轮复习英语完形第7套中一句话的理解

某车行现在有二轮电动车和三轮电动车共8辆,19个轮子.二轮电动车有几辆?三轮电动车有几辆?
忘说了，要列式！用假设法！呵呵

高考二轮生物题
1.人的皮肤生发层细胞中,下列物质产生及运输途径正确的是
A．DNA聚合酶：核糖体合成一细胞质基质一细胞核
B．葡萄糖：内环境一细胞膜一细胞质基质一线粒体
C．细胞质基质产生-细胞膜一内环境
D.抗体：核糖体合成一内质网一高尔基体一细胞膜一内环境

山西省2012高考英语二轮复习专题训练：短文改错
注意：
1．每处错误及其修改均仅限一词；
2．只允许修改10处,多者（从第11处起）不计分.
Different students hold different view on whether we should start a blog on the Internet． Some believe it can provide with a colorful stage for students to show their talents．Also,it's nice way to help them relieving pressure．However,other have an o

（2008•宝应县）光明停车场停着二轮摩托车和小轿车共20辆，小军数了一下共有70个车轮，那么二轮摩托有______辆，小轿车______辆．

四轮小汽车、三轮摩托车、二轮轻骑共100辆,其轮共311个.小汽车的总轮数
比轻骑的总轮数多108个.三种车各有多少辆?〕

The Hearst Castle 英语阅读的答案 ______是河北省2012高考英语二轮复习专题训练：阅读理解（60）
做过这篇阅读的朋友麻烦给个答案,

高三英语阅读二轮复习的主要内容是什么
阅读理解在二轮和一轮的复习上有什么不同,该侧重什么

高三英语复习计划该怎么制定?
都高三二轮复习了,我的英语复习还是一团糟,现在真是超级担心英语,希望有经验的同学能给我一些关于高三英语复习计划的建议,帮我提高英语复习的效率,

遇到一个关于轮胎的迷题.
我有一部立马二轮电动车,后轮胎的压力已经很低,但我没在意.前天出去想带个同事.在我坐上车之后,同事也坐上了车,结果他一坐上,后轮胎一下就扁了,气全部都泄光了.我以为是轮胎破了,就到补胎店补胎.但老板说他不懂得补真空胎,于是就帮我把轮胎充满气,让我再到其它轮胎店补.可是在充足气之后,已经两天过去了,我并没有到其它轮胎店补胎.轮胎的气压一直都是那么饱,丝毫没有漏气的现象.请问这是什么原因?

英语翻译
浙江省2012高考英语二轮复习专题训练：完型填空（26） (1)阅读下面短文,掌握其大意,然后从 20 各题所给的四个选项 (a、b、c和d) 中,选出最佳选项.we should show respect to everybody,especially our elders because they are ahead of us — in age,in wisdom and maturity,in experience and education.our 1 have done a lot for us,directly or indirectly and most of us 2 everything to their kindness and love.

导与练生物一轮和二轮的内容有什么不一样的
2012新课标高中总复习导与练•生物第一轮(RJ)(配人教版)

英语完型,求答.正确加50分 浙江省2012高考英语二轮复习专题训练：完型填空（17） (1
英语完型,求答.正确加50分
浙江省2012高考英语二轮复习专题训练：完型填空（17） (1)阅读下面短文,从短文后各题所给的四个选项（A、B、C和D）中,选出可以填入空白处的最佳选项.For a few years,I have been wearing a ring on my right hand.It’s not always the 1 ring,but it’s always a ring that has 2 on it so that when I look at it,I’m 3 or reminded of something important.I have made a 4 of buying rings like this whenever I see one in a store.Sometimes I give them away as 5 to someone like Jennie.I first met Jennie in the 6 waiting room and we had talked several times.One night I sat down beside her and 7 how her son was doing because I knew that he was in very 8 condition.She told me that she didn’t know what to do any more because it seemed none of the 9 from the doctors was good.They weren’t at all sure her son was going to 10 the accident that had hurt him so badly.With 11 in her eyes she said,“They’re 12_ my hope.” I knew then that it was 13 just a coincidence that I was wearing the ring that I had on that day.As she 14 to talk,I 15 slipped the ring off my finger and placed it in Jennie’s hand.I told her to wear it to member that God loved her and He would be with her 16 all of this.17 Jennie looked down at the ring,she got excited and then held it tightly,18 the word written on the ring was “HOPE”.The last day I was at the hospital,I saw Jennie in the distance as I got on the lift.She 19 and held up the hand with the ring on it as she called out to me saying,“Look,I 20 have Hope!” 1．A．specialB．expensiveC．sameD．valuable 2．A．wordsB

高三总复习二轮 的化学溶液电离水解一个问题

25°C时,有c(CH3COOH)+c(CH3COO－)= 0. 1 mol·L-1的一组醋酸、醋酸钠混合溶液,溶液中c(CH3COOH)、c(CH3COO－)与pH 的关系如图7 所示.下列有关溶液中离子浓度关系的叙述正确的是

A． pH=5. 5 的溶液中：

c(CH3COOH)>c(CH3COO－)>c(H＋)>c(OH－)

B． W 点所表示的溶液中：

c(Na＋)+c(H＋)= c(CH3COOH)+c(OH－)

C． pH = 3. 5 的溶液中：

c(Na＋) +c(H＋) -c(OH－) +c(CH3COOH)= 0. 1mol·L-1

D．向W 点所表示的1. 0 L 溶液中通入0. 05 mol HCl 气体(溶液体积变化可忽略)： c(H＋)= c(CH3COOH)+c(OH－)

我一直搞不懂,为什么A是错的?

先确认一下,上升的曲线是HAc 下降的曲线是Ac- 对吧

那在pH=5.5时, HAc>Ac- 不就对了吗,然后H+ > OH-

怎么错了呢?

貌似有人在网上解答说

物料守恒 c(CH3COOH)+c(CH3COO－)= 0. 1 mol·L-1=2c（Na+）

可是它一开始的体系又不是NaAc 和 HAc 1:1 为什么可以这样?