限时训练11.7

个人：热爱祖国和航空事业，坚决执行命令，完成各项任务．

家长：坚决支持孩子的选择为保卫祖国贡献自己的力量8．设N A表示阿伏加德罗常数，下列说法正确的是

A．11.2LSO2中含有氧原子数为N A

B．2mol铝与足量烧碱溶液反应时被还原水的分子数为2N A

C．0.1mol/L的NH4NO3溶液中含氮原子数目为0.2N A

D．电解精炼铜，当外电路通过2N A个电子时，阳极溶解铜的物质的量小于1mol

9. 用硫酸铁电化浸出黄铜矿精矿工艺中，精矿在阳极浸出的反应比较复杂，其中有一主要

反应：CuFeS2＋4Fe3＋＝Cu2＋＋5Fe2＋＋2S

下列说法正确的是

A．反应中硫元素被氧化，所有铁元素均被还原

B．还原剂是S2－和Cu＋，氧化剂是Fe3＋

C．氧化产物是S，还原产物是Cu2＋和Fe2＋

D．当转移1 mol e－时，有46 g CuFeS2参加反应

D D

8. 干洗衣服的干洗剂的主要成分是四氯乙烯（CCl2=CCl2)，下列有关叙述不正确的是

A.它属于烯烃

B.它能使Br2的CCl4溶液褪色

C.它能使酸性高锰酸钾溶液褪色

D.它能发生加聚反应

A

10．下列表示对应化学反应的离子方程式正确的是

A．AlCl3溶液中加入过量的浓氨水：Al3＋＋4NH3·H2O ＝AlO2－＋4NH4＋＋2H2O B．用FeCl3溶液腐蚀铜线路板：Cu + 2Fe3+＝Cu2+ + 2Fe2+

C．大理石溶于醋酸中的反应：CaCO3＋2H＋＝Ca2＋＋H2O＋CO2↑

D．钠与水反应：Na + 2H2O = Na＋+ 2OH－+ H2↑

11．某烃的衍生物A，分子式为C6H12O2。实验表明A跟氢氧化钠溶液共热生成B和C，B跟盐酸反应生成有机物D，C在铜催化和加热条件下氧化为E，其中D、E都不能发生银镜反应。由此判断A的可能结构有

A．6种B．4种C．3种D．2种12．用N A表示阿伏伽德罗常数的值，下列说法正确的是

A．在1L 0.1mol/L硫化钠溶液中阴离子总数大于0.1 N A

B．1mol O2 作氧化剂时转移电子数一定为4N A

C．标准状况下，22.4L戊烷所含分子数为N A

D．在1L1.0mol/L NaCl 溶液中含有N A个NaCl分子

B、11D、12A

11．以下实验原理或操作中，正确的是

A．分液操作中，待下层液体流出后，再将上层液体从分液漏斗下口放出

B．焰色反应实验中，铂丝在蘸取待测溶液前，应先用稀硫酸洗净并灼烧

C．中和滴定实验中，如用于盛放待测溶液的锥形瓶洗净后未干燥，不影响测定结果

D．测定溶液pH时，可用pH试纸蘸取少量待测液，并与标准比色卡比较

C

7、有下列三种转化途径，某些反应条件和产物已省略，下列有关说法不正确的是

A．途径①反应中体现了浓HNO3的强氧化性

B．途径②、③的第二步反应在实际生产中可以通过增大O2浓度来降低成本

C．由途径①、②、③分别制取1 mol H2SO4，理论上生成1 mol H2SO4，各转移6 mol e－D．途径②、③与途径①相比更能体现“绿色化学”的理念是因为途径②、③比途径①污染相

对小且原子利用率高

C

25.根据环保要求，在处理有氰电镀废水时，剧毒的CN－离子在催化剂TiO2颗粒作用下，

先用NaClO在碱性条件下将CN－

离子氧化成CNO－（CN－和CNO－中

N元素均为－3价），再在酸性条

件下继续与NaClO反应生成N2、

CO2和Cl2。环保工作人员在密闭

系统中用下图装置进行实验，

测定CN－被处理的百分率。

现将浓缩后含CN－离子的污水与过量NaClO溶液的混合液共200mL（其中CN－的浓度为0.2mol/L）倒入甲中，塞上橡皮塞，一段时间后，打开橡皮塞和活塞，使溶液全部放入乙中，关闭活塞。回答下列问题：

（1）根据题意，写出有关主要反应的离子方程式：

甲中的反应：

乙中的反应：

（2）上述实验是通过测定CO2的量来确定对CN－的处理效果。丙装置中的试剂是，丁装置的目的是；干燥管Ⅰ的作用是，干燥管Ⅱ的作用是

（3）假定上述每一个装置都充分吸收，则利用该装置测得的CN－被处理的百分率与实际

值相比（填：“偏高”或“偏低”），简述可能的原因: （4）若干燥管Ⅰ中碱石灰增重1.408g，则该实验中测得CN－被处理的百分率为。

26．（1）（2分）CN－+ClO－=CNO－+Cl―

（2分）2CNO－+6ClO―+8H＋=N2↑+2CO2↑+3Cl2↑+4H2O

（2）（都1分）浓硫酸，除去Cl2，吸收CO2，

（2分）防止空气中的CO2、水蒸气进入，干扰实验

（3）（1分）偏低，（1分）装置中残留有CO2未被完全吸收

（4）（2分）80%

27. （14分，每空2分）

下图中A~L分别表示反应中的一种常见物质，E、F、I在通常状况下是气体单质，其中E为有剌激性气味的气体，X、Y是常见的金属单质，参加反应的水以及生成的水在图中已略去。

填写下列空白：

（1）E是________；K是________；H是________；J是__________。（写化学式）（2）写出D+X→F+G的离子方程式：

___________________________ 。

（3）写出A+B→C+E的化学方程式：________________________

_ 。

（4）电解C溶液时，电路中通过0.2NA的电子时，产生的气体体积在标况时的体积为（不考虑气体的溶解）L

27．E Cl2K FeCl3 H Al(OH)3J Fe(OH)3 (各2分)

(1)2Al + 2OH- + 2H2O = 2AlO2- + 3H2↑（2分）

(2)2HCl(浓)+NaClO = NaCl+Cl2↑+H2O（2分）（4）4.48（2分）

27．（14分）有A、B、C、D、E五种常见化合物，都是由下表中的离子形成的：

D为蓝色溶液，

其他均为无色溶液；②将E溶液滴入到C溶液中出现白色沉淀，继续滴加，沉淀溶解；

③进行焰色反应，仅有B、C为紫色（透过蓝色钴玻璃）；④在各溶液中加入硝酸钡溶液，

再加过量稀硝酸，只有A中放出无色气体，只有C、D中产生白色沉淀；⑤将B、D两溶液

混合，未见沉淀或气体生成。根据上述实验填空：

（1）写出B、D的化学式：B ，D 。

（2）写出A溶液与E溶液反应的离子方程式：。

（3）C常用作净水剂，用离子方程式表示其净水原理。

（4）在A溶液中加入少量澄清石灰水，其离子方程式为。

（5）向C溶液中加入过量E溶液，反应的离子方程式为。（6）向100mL 1.0mol/LC溶液中加入1.0mol/LE溶液，若要使生成沉淀质量最大，则加入E的体积为mL。

27、（14分）

（1）KNO3 D CuSO4 ；

（2）HCO3- + OH- = CO32- +H2O

（3）铝离子水解的离子方程式

（4）碳酸氢钠溶液与少量澄清石灰水反应的离子方程式

（5）铝离子和过量氢氧根离子的反应

（6）300 ；

27．（15分）（1）T℃下，某2L容器内A、M、N三种物质参与的某一化学反应：2A(g) M(g)+2N(g)

①其物质的量随反应时间的变化的曲线如图13，此反应0～5min反应物A的反应速率为

则该反应在T℃的化学平衡常数为。

②若为了寻找该反应的最佳条件，在反应过程中持续不断地升高温度，所得的M 的体积

分数如图14，则该反应的△H 0（填“＞”或“＜”）。

（2）氮的氢化物肼(N 2H 4)是航天火箭发射常用的燃料。

①发射火箭时肼(N 2H 4)为燃料，二氧化氮作氧化剂，两者反应生成氮气和气态水。该反应的化学方程式为 。

②工业上可采用电化学的方法获得N 2H 4，装置如图15所示，则通入

氨气的一极为 。该电极反应式为 。

③将标准状况下112mL CO 2通入100mL 0.1mo1/L 的氨水中，所得溶液

碱显碱性，则溶液中离子浓度由大到小的顺序为 ；

该溶液中，23323()()()c HCO c CO c H CO --++ =

（忽略溶液体积的变化）

英语限时阅读训练(

英语限时阅读训练（一） 第一部分完型填空 阅读下面短文，撑握其大意，然后从36~55各题所给的四个选项（A、B、C和D），选出最佳选项。 Beth, my favourite dog, was murdered on November 25th, 2006. Here I use the word―murder‖without36 ，because I know the killers were my 37 members. Though the dog was not as strong and beautiful as others, she 38 my childhood and I loved her. Beth was killed because she bit my 39 . Dad was so angry that he decided to kill her. I was unable to 40 my father and I dared not look on at that moment. But I can imagine how 41 and painful she was when she was 42 between life and death. She 43 have been calling me for help. 44 , I could do nothing but cry. Her death was caused by a bite, but has every one of my family thought why she went out of her 45 to bite people that day? The person just moved into our community last week and Beth was not familiar with him. She bit him to keep her owner safe. Should we 46 her life because of her 47 ? Human beings sometimes are selfish and 48 to animals. When the animal is useful, they 49 to be kind. But once the animal makes them angry or becomes useless, people 50 it, alongside all sweet 51 about it. How terrible! How I wish God had told me the end of her life 52 . Even if there was only one day, I would have taken a day off to 53 with her in the field. I’d untie the line around her54 and let her run free 55 she was tired enough to go to sleep near my feet… 36．A．anger B．hesitation C．excuse D．complaint 37．A．family B．team C．human D．class 38．A．guided B．followed C．accompanied D．protected 39．A．classmate B．teacher C．friend D．neighbour 40．A．stop B．refuse C．persuade D．warn 41．A．disappointed B．separated C．helpless D．hopeless 42．A．struggling B．fighting C．shouting D．crying 43．A．should B．must C．could D．might 44．A．Instead B．Therefore C．However D．Besides 45．A．mind B．control C．place D．way 46．A．end B．kill C．complete D．give 47．A．kindness B．love C．mistake D．concern 48．A．cruel B．impolite C．rude D．stupid 49．A．determine B．appear C．pretend D．try 50．A．desert B．blame C．forget D．throw 51．A．events B．incidents C．memories D．laughs 52．A．before B．immediately C．in time D．in advance 53．A．walk B．relax C．communicate D．chase 54．A．neck B．head C．feet D．body 55．A．unless B．so C．until D．if 第二部分：阅读理解 阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 A In today’s Internet age, online games can be a change from the pressure of school and work. However, they can also cause problems and unhealthy addictions. This is most clearly seen in the example of South Korea. This country has the world’s highest percentag e of high – speed Internet services. It has also a high number of game players who are addicted to online games. In 2004, a young man died after playing online games almost nonstop for 86 hours. A 12 – year – old boy stole $ 16,000 from his father to continue online games which he could not get away from. Such problems are spreading to other parts of Asia as well. In 2005, it was reported that about 80 percent of China’s 13.8 million online game players were under 25. And many of these were said to be addicted. Such numbers point toward a growing problem among Chinese youth. Dr. Sue – Huei Chen, a psychologist (心理学家), discovered some signs of at – risk people. Such people often go online to escape from their problems. And they usually have no friendship or good social skills. They feel the need to spend more and more time online, so they may be absent from school or family. And they become upset if anyone tries to limit their online game playing. 56．The passage is mainly about .

7-限时规范训练

7．语言表达简明、连贯、得体，准确、鲜明、生动 1．参照下面的内容，用简明的文字叙说自己对父母威信的看法。(50字以内) 一位家长感慨：“唉，现在的孩子真不了起，知道的东西比我们还多，弄得我们这些做父母的常被他们瞧不起，更不要说什么威信了。” 答：________________________________________________________________________ ________________________________________________________________________ 答案知识爆炸，科学发展，父母在接受新事物新知识方面可能不及子女，这是社会进步使然，无损于父母的威信。(或：家长的威信主要建立在社会、家庭的认可及他们的品行、能力等因素，并非由懂得多少来决定。) 2．根据文意排列下面句子的顺序，把正确句序的序号填入横线上。 有人说：世界上最难回答的问题往往是孩子提出的问题。因为他们的问题是真正的心灵问题、哲学问题，_________________________________________________________ ________________________________________________________________________。 ①哲学最终成了极少数对问题穷追不舍的人的专利 ②大人们往往回避问题，或只分析问题 ③于是，哲学思想便在这种环境中很快地夭折了 ④而孩子们的问题又往往把真理性问题一丝不挂地揪出来，让大人们很尴尬 ⑤而孩子们往往因为大人们没有给出答案而沮丧，放弃了对问题的追问 答：____________________________________________________________________。 解析本题重点考查的是考生语言表达连贯的能力。④句“而”相当于“而且”表并列，连接“他们的问题是真正的心灵问题、哲学问题”句。②句是④句的结果，⑤句“而”相当于“进而”与前文构成递进关系，③句是⑤句的结果，①句是③句的结果。 排列语序，首先理清句子之间的语意关系，在此基础上要兼顾关联词语的作用。 答案④②⑤③① 3．在下面的空缺处分别填入7个备选句子，使其语意连贯、完整，将正确的排序写在横线上(只填序号)。 和我们熟悉的古装剧相比，《少年天子》多多少少有些新鲜，究竟新鲜在哪里呢？新鲜在台词。这种台词，有洞明世事的。____________________这让人领略到作者的思考。 脱离画面去听《少年天子》，故事依然是衔接的，对台词的感受或许更加深切。 ①这让人领略到作者的细腻 ②比如郑亲王对急于想上战场立功的儿子说：“做人贵在不动声色，万万不可虚张声 势。”

高中数学限时训练

综合限时训练 （60分钟） 1．设3i 12i z -=+，则z = A ．2 B C D ．1 2．已知0.20.3 2log 0.2,2,0.2a b c ===，则 A ． B ． C ． D ． 3．函数f (x )= 2 sin cos x x x x ++在[—π，π]的图像大致为 A ． B ． C ． D ． 4．tan255°= A ．－2 B ．－ C ．2 D ． 5．已知非零向量a ，b 满足a =2b ，且（a –b ）⊥b ，则a 与b 的夹角为 A ． π6 B ． π3 C ． 2π3 D ． 5π6 6．双曲线C :22 221(0,0)x y a b a b -=>>的 一条渐近线的倾斜角为130°，则C 的离心率为 A ．2sin40° B ．2cos40° C ． 1 sin50? D ． 1 cos50? 7. △ABC 的内角A ，B ，C 的对边分别为a ，b ，c ，已知a sin A －b sin B =4c sin C ，cos A =－ 14 ，则 b c = A ．6 B ．5 C ．4 D ．3 8．曲线2)3(e x y x x =+在点(0,0)处的切线方程为___________． 9．记S n 为等比数列{a n }的前n 项和.若133 1 4 a S ==，，则S 4=___________． 10．函数3π ()sin(2)3cos 2 f x x x =+-的最小值为___________． a b c <

11．某商场为提高服务质量，随机调查了50名男顾客和50名女顾客，每位顾客对该商场的服务给出满意或不满意的评价，得到下面列联表： （1）分别估计男、女顾客对该商场服务满意的概率； （2）能否有95%的把握认为男、女顾客对该商场服务的评价有差异？ 附： 2 2 () ()()()() n ad bc K a b c d a c b d - = ++++ ． 12．记S n为等差数列{a n}的前n项和，已知S9=－a5．（1）若a3=4，求{a n}的通项公式； （2）若a1>0，求使得S n≥a n的n的取值范围．

限时训练(1)

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高一数学必修1限时训练 使用班级：高一级 使用时间：10月11日 班级 姓名 成绩 一．选择题（请将答案填写在答题卡，每题5分，共50分） 1．集合},{b a 的子集有 （ ） A ．2个 B ．3个 C ．4个 D ．5个 2． 设集合{}|43A x x =-<<，{}|2B x x =≤，则A B = （ ） A ．(4,3)- B ．(4,2]- C ．(,2]-∞ D ．(,3)-∞ 3．已知()5412 -+=-x x x f ，则()x f 的表达式是（ ） A ． x x 62+ B ．782++x x C ．322-+x x D ．1062-+x x 4.函数f(x)＝x 21-的定义域是 （ ） A 、[0，＋∞） B 、（－∞，0） C 、（－∞，＋∞） D 、(]0,∞- 5．下列函数中，定义域为[0，∞）的函数是 （ ） A ．x y = B ．22x y -= C ．13+=x y D ．2)1(-=x y 6.设,10<<，下面四个等式中： ①lg()lg lg ab a b =+； ②lg lg lg a a b b =-； ③ b a b a lg )lg(212= ； ④1lg()log 10ab ab = 其中正确命题的个数为 ( ) A ．0 B ．1 C ．2 D ．3 10.定义运算a b ⊕，a b ⊕=????? a ，a≤b， b ，a>b. 例如：121⊕=，则函数12x y =⊕的值域 为( ) A 、(－∞，1) B 、(0,1) C 、[1，＋∞) D 、(0,1] 二 填空题（每空5分，共20分） 11．若{}{}0,1,2,3,|3,A B x x a a A ===∈，则A B = ． 12．若函数2()1 x a f x x bx += ++在[]1,1-上是奇函数,则a = , b = . 13、函数)10()(≠>=a a a x f x 且在区间]2,1[上的最大值比最小值大2 a ，则a =__________ 14 .函数 y=log (x-1)(3-x) 的定义域是 。 三．解答题（每题15分，共60分） 15. 已知集合}04{2=-=x x A ，集合}02{=-=ax x B ，若A B ?，求实数a 的取值集合．

限时训练题十七

限时训练题十七 语法填空 I fin ally took part in my first local Walk for Hope eve nt, which is a race to raise money for breast can cer research. People usually give $30 at the least to walk a 4-mile (6.4km) roun dtrip course in the neighborhood. After finishing, they are greeted with tents and free food 1 the start ing point. I ___ 2 ______ (pla n) to do the Walk every year since the sixth grade, but fate seemed to have not wan ted it. This year, I cleared my schedule weeks in adva nee, and eve n went to bed before 10 pm to make sure I _________ 3__ make it. _______ 4_______ (fortun ate), I was early eno ugh to see the mayor cut the ribbon , marking the start of the walk. The n, the race bega n. I felt pretty good at first. However, about a mile (1.6km) down the course, I bega n to tire. My frie nd Dave, who was at first a half-step __5 _______________ me, was now half a block ahead. I was embarrassed and hated the fact ____ 6____ I could n't keep up with him. At the half-way point I decided to get a head start back to the start ing point with one of my girlfrie nds, Alyna. She had bee n wait ing for me there. Alyna and I man aged to jog 7 whole way back to the starti ng point, although at a slower pace tha n Dave and I had done before. Just _____ 8 ____ (th in k)of all the free food that was wait ing for me made me want to get back faster. It was already noon by the time the last walkers arrived at the finish line, and my friends and I had already had ____________ 9_____ b it of food and en terta inmen t. I was sweaty, smelly, and exhausted, ___ 10 ____ I was glad I was able to con tribute to a great cause exercise with my friends and eat free food, all at the same time. 完型填空 When I entered Berkeley, I hoped to earn a scholarship. Having been a Straight-A stude nt, I believed I take tough subjects and really lear n somethi ng. One such course was World Literature given by Professor Jayne. I was extremely interested in the ideas heA in class. When I took the first exam, I was shocked to find a 77, C-plus, on my test paper, for English was my best subject. I went to Professor Jayne, who listened to my argume nts but rema in ed_ 2 . I decided to try harder, although I did n ow whatthatimea nt because school had always been easy for me. I read the books more carefully, but got another 77. Aga in, I 3 with Professor t cha ng Jayne. Agai n, he liste ned patie ntly but would n his mi nd . One more test before the final exam. One more cha nce to improve my grade. So I redoubled my efforts and, for the first time. 4 The meaning of the word “ thorough ” . Buteffort did no good and everyth in g 5 as before. The last hurdle(障碍) was the fin al. No matter what grade I got, it would n ' t can cel three C-pluses. I might as well kiss the 6 goodbye. I stopped working head. I felt I knew the course material as well as I ever would.