伊宁县第一中学2013届高三年级第9次作业
理 科 数 学
第I 卷（选择题 共60分）
一、选择题：本大题共12小题，每小题5分，共60分。在每小题给出的四个选项中，只有一项符合题目要求。
1．已知全集{12345}U =，，，，，集合{1,3}A =，{3,4,5}B =，则集合()U C A
B = （ ）
A ．{2}
B ．{4,5}
C ．{3,4,5}
D ．{1245}，，，
2．已知{}n a 为等差数列，13524618,24a a a a a a ++=++=，则20a 等于 （ ）
A. 10
B. 20
C. 40
D.80
3．平面向量a 与b 的夹角为0
60，a = 2, |b | = 1，则 |a +2b |= （ ）
4.下列命题中是假命题的是 （ ）
A ．R ∈?βα,,使sin (+)=sin +sin αβαβ;
B ． ,R ∈??函数)2sin()(?+=x x f 都不是偶函数
C ．R ∈?m ,使3
42
)1(+-?-=m m
x m x f （）是幂函数,且在),0(+∞上递减
D ．>0a ?函数a x x x f -+=ln ln )(2有零点.
5．已知函数(+1)
23log ,>3
()2+1,3
x x x f x x -??=?≤??，满足()=3f a ，则(5)f a -的值为 （ ）
A ．2log 3
B ． 1716
C ．3
2
D ．1
6．在斜三角形ABC
中，sin = cos A B C ?
，且tan tan =1B C ?A ∠的值为 （ ）
A ．
4π B ．3π C ．2π D ．34
π
7.已知函数
()f x 是定义在(0,+)∞上的单调函数，且对任意的正数,x y 都有()=()+(),f x y f x f y ?若数列
{}n a 的前n 项和为n S ，且满足(+2) ()=(3) (n ),n n f S f a f N *-∈则n a 为 （ ）
A ． -1
2
n B ． n C ．21n - D ． 13 ()2
n -
8.已知m 、n 是两条不同的直线，α、β、γ是三个不同的平面，下列命题中错误的是（ ） A. 若,m m αβ⊥⊥则α∥β B. 若α∥γ，β∥γ则α∥β C. 若,,m n m αβ??∥n 则α∥β
D. 若m 、n 是异面直线，,,m n m αβ??∥β，n ∥α则α∥β 9．已知数列{}n a 是等差数列，0n a ≠若2142lg lg lg a a a =+，则78
89
a a a a ++的值是（ ） A ．
1517 B ．1或1517 C.1315 D ．1或13
15
10.已知函数()f x 的导函数为'()5cos ,(1,1)f x x x =+∈-且(0)0f =若2(1)(1)0f x f x -+-<，则x 的取值范围为（ ）思路：1.判断奇偶性，2。单调性
A (0,1)
B (1,
C (2,-
∪(1)- 11．函数()1log (0,1)a f x x a a =+>≠的图像恒过定点A ，若点A 在直线20mx ny +-=上，
其中m ，n>0，则
11
m n
+的最小值为（ ） A1 B2 C3 D4
12.在三角形ABC 中，B=600，AC=3, 则AB+2BC 的最大值为( )
A ．3 B. 3 C. 7 D. 27
第II 卷（非选择题 共90分）
二、填空题：本大题共4小题，每小题5分，共20分。
13．如图所示是一个几何体的三视图（单位：cm ），主视图和左视图是底边长为4cm ，腰
长为俯视图是边长为4的正方形，则这个几何体的表面积是__________ 14.执行下图所示的程序框图，输出结果是______
15．设向量()21,a a a =，()21,b b b =，定义一种向量积()2211,b a b a b a =?，已知???
??=21,2m ，
??
?
??=0,3πn ，点P ()y x ,在x y sin =的图像上运动。Q 是函数()x f y =图像上的点，且满足
+?=（其中O 为坐标原点）
，函数()x f y =的值域是 16.已知函数bx x x f +=2
)(的图象在点))1(,1(f A 处的切线l 与直线023=+-y x 平行，若数列})
(1
{
n f 的前n 项和为n S ，则2013S 的值为
三、解答题：解答题写出文字说明、证明过程或演算步骤。
17．（本小题满分12分）已知数列{}n a 的相邻两项1,n n a a +是关于x 的方程220,()
n n x x b n N *-+=∈的两根，且11a = 。 （1）求证：数列123n n a ??
-?????
是等比数列；
（2）求数列{}n a 的前n 项和n S ；
18. （本小题满分6分）已知函数21
()(1)ln(1)2
f x x x x x =+-++（1）判断()f x 的单调性；
19. （本小题满分12分）在四棱锥P ABCD -中，底面ABCD 是直角梯形，A B ∥CD ，
∠ABC=090，AB=PB=PC=BC=2CD ，平面PBC ⊥平面ABCD
（1）求证：A B ⊥平面PBC
（2）求平面PAD 和平面BCP 所成的二面角（小于090）的大小。
（3）在棱PB 上是否存在点M 使C M ∥平面PAD ？
若存在,求PM
PB
的值。若不存在,请说明理由。
20.（本小题满分6分）设a ≥0，函数x a x x x f ln 2ln 1)(2+--=。
（Ⅰ）令)()(x f x x F '=，讨论)(x F 在（0，＋∞）内的单调性并求极值；
21.（本小题满分10分）已知函数
2()ln ,a
f x x a x =+
∈R ．（1）若1a =，求函数()f x 的极值；
（2）若函数()f x 在[2,)+∞上是增函数，求实数a 的取值范围；
22．(本小题满分12分)已知向量33(cos
,sin )22a x x =，(cos ,sin )22
x x
b =-，且0,2x π??
∈????
．(Ⅰ)求||a b +；
（Ⅱ）设函数()||f x a b a b =++?，求函数()f x 的最值及相应的x 的值．
23．（本小题满分12分）
设数列{}n a 的前n 项和为n S ，且满足n S ＝2－n a ，n ＝1，2，3，…． （1）求数列{}n a 的通项公式；
（2）若数列{}n b 满足1b ＝1，且1n b +＝n b ＋n a ，求数列{}n b 的通项公式； （3）设n c ＝n (3－n b )，求数列{}n c 的前n 项和为n T ．
俯视图
第14题
江苏省海头高级中学2014-2015学年第二学期周末训练（15） 高二数学试题（选修物理） （考试时间120分钟，总分160分） 1、设复数满足，其中为虚数单位，则 ． 2、若双曲线122 22=-b y a x 的两个焦点到一条准线的距离之比为3：2,则双曲线的离心率______ 3、的二项展开式中，的系数是___________（用数字作答）． 4、圆的极坐标方程为 ，则该圆的半径为 ． 5、函数的最大值是 ． 6、 P 为椭圆22 143 x y +=上的一点，M 、N 分别是圆22(1)4x y ++=和22(1)1x y -+=上的点，则|PM | + |PN |的最大值为 . 7、已知曲线的极坐标方程分别为和，则曲线交点的极坐标为 ． 8、过点()0,4-作直线l 与圆0204222=--++y x y x 交于A 、B 两点，若AB=8，则直线 l 的方程为__ __ 9、从集合中随机选取一个数记为，从集合中随机选取一个数记为，则直线不经过第三象限的概率为 ． 10、某校学生在上学路上要经过2个路口，假设在各路口是否遇到红灯是相互独立的，遇到红灯的概率都是，遇到红灯时停留的时间都是2分钟．则该校某个学生在上学路上因遇到红灯停留的总时间的均值等于 分钟． 11、已知函数，下列四个条件：①②③
④，其中是的充分条件的是（填正确答案的序 号）． 12、关于的方程至少有一个负实根的充要条件是． 13、小东购买一种叫做“买必赢”的彩票，每注售价10元，中奖的概率为，如果每注奖 的奖金为300元，那么小东购买一注彩票的期望收益是元．14、在证明恒等式时，可利用组合数 表示，即推得.类似地，在推导恒等式 时，也可以利用组合数表示推得。则 ______________. 15、已知二阶矩阵有特征值及对应的一个特征向量，并且在矩阵作用下将 点变换成点。（1）求矩阵； （2）求矩阵的另一个特征值，及对应的一个特征向量的坐标之间的关系； （3）求直线在矩阵作用下的直线的方程。 16、已知命题：≥0；：≤0（）。 （1）若命题为真命题，求实数的取值范围； （2）若是成立的充分不必要条件，求实数的取值范围。 17、已知。 （1）若，，求∑ =- 2012 )1 ( i i i a的值；
Unit 2 The environment 同步练习(一) 总分 100分 时间 40 分钟 成绩评定 __________________ I. 学生习作欣赏：A Save our earth With the development of society, the earth is being damaged by people who are seeking comfort at all costs. The sky is no longer blue. The air is no longer fresh. The rivers are no longer clean. Many animals and plants are disappearing from the earth. And the size of deserts is growing rapidly every year. Our planet has been seriously polluted. There are many reasons for this. First, many paper mills send out waste water and smoke that are not processed. Second, the expansion of large cities also brings about terrible pollution. Nowadays, waste gas and everyday rubbish have become big problems. Third, a huge number of trees are cut down each year. Whenever there is a strong wind, the top soil is blown away. Sandstorms badly affect people’ s lives and health. We all know that we have only one home. If we continue polluting it, the earth will turn out to be a planet which is unfit for us to live on. To save the earth means to save ourselves. Let’s take action without any delay. Let’s try our best to save the earth, our home. II. 阅读下文，完成后面问题： Wuzhen (乌镇), an ancient river town On both sides of a stone-paved street stand pubs, restaurants, pawnshops(当铺), and other businesses all housed in brown wooden buildings. Long rivers flow through the town, with stone bridges of various designs going over them. The Beijing-Hangzhou Grand Canal (京杭大运河) passes by. Old waterside houses and outside corridors(走廊) can be found here and there. This is the ancient river town of Wuzhen. Wuzhen Town, in Tongxiang City, Zhejiang Province, has a history of more than 1,000 years. Of the ancient residential houses, workshops, and stores still standing on the banks of the rivers 169,600 square meters, making up 81.54 percent of the town's total area, have remained unchanged, giving it an old feeling Tradition is still very alive in Wuzhen. In addition to flower-drum operas, shadow-puppet show, and temple fairs, Wuzhen also attracts visitors with its time-honored art of making indigo-dyed printed calico(靛青印花布). Wuzhen is at its best on rainy days. Wandering with an umbrella along a quiet old lane(巷子) past the centuries-old wooden houses and seeing the rain flow off the engraved eaves(木雕屋檐) that cover the doorways is an amazing experience. The falling raindrops make ripples(波纹) on the surfaces of the rivers, while boats travel to and fro. The waterside pavilions(亭子), corridors, and the arched bridges make a charming scene. People in Wuzhen live a simple life. Many of them breed silkworms and raise flowers. They have mostly kept the tradition of buying fruits and vegetables from trade boats through the windows of their waterside houses. They benefit from a perfect harmony of man and nature. Wuzhen has been included by UNESCO (联合国教科文组织) in the list of World Cultural Heritages. 1. A Choose a word from the above text which can properly describe each of the following things. The selected words should be different: （每题5分，共35分） 1) ________ town 2) ________ streets 3)________houses 4) _______ rivers 5) _________ bridges 6)_________ lanes 预习 课堂
鲁JJ－008－□□□工程名称 及部位 庙山立朝社区朝阳小区3#楼鉴定编号001 施工单位郯城县建筑安装工程总公司搅拌方式现场机械搅拌 强度等级C15 要求坍落度20-40 配合比编号试配单位郯城县建设工程质量检测站水灰比0.6 砂率（％）38 材料名称水泥砂石水 外加剂 （） 掺合料 （） 设计每m3用 料（Kg） 300 703 1197 180 调整后每盘用 料（Kg） 砂含水率 3％石含水率 0％ 100 234 399 60 鉴定结果鉴定 项目 混凝土拌合物性能 混凝土试块抗压 强度（Mpa） 原材料与申请单是 否相符坍落度保水性粘聚性 设计20-40 实测30 鉴定结论： 同意按此配合比施工 监理工程师（建设单位项目负责人）混凝土试配单位 负责人 施工单位项目（专业） 技术负责人 搅拌机组负责人 鉴定日期
鲁JJ－008－□□□工程名称 及部位 庙山立朝社区朝阳小区3#楼鉴定编号002 施工单位郯城县建筑安装工程总公司搅拌方式现场机械搅拌 强度等级 C30 要求坍落度 30-50 配合比编号试配单位郯城县建设工程质量检测站水灰比0.42 砂率（％）30 材料名称水泥砂石水 外加剂 （） 掺合料 （） 设计每m3用 料（Kg）449 535 1248 188 调整后每盘用 料（Kg） 砂含水率 5 ％石含水率1％100 119 279 42 鉴定结果鉴定 项目 混凝土拌合物性能 混凝土试块抗压 强度（Mpa） 原材料与申请单是 否相符坍落度保水性粘聚性 设计30-50 实测450 鉴定结论： 同意按此配比施工 监理工程师（建设单位项目负责人）混凝土试配单位 负责人 施工单位项目（专业） 技术负责人 搅拌机组负责人 鉴定日期
关于在2013届毕业生中评选 优秀毕业生、三好学生、优秀学生干部的通 知 各二级学院： 为了树立先进典型，激励学生勤奋学习，提高学生素质，根据湖南省教育厅有关文件精神以及《湖南涉外经济学院学生奖励办法》有关规定，决定在2013届毕业生中开展优秀毕业生（含省级）、三好学生、优秀学生干部评选工作，现就有关事项通知如下： 一、评选对象 2013届全体毕业生。 二、评选条件 （一）优秀毕业生 1、校级优秀毕业生 依照《湖南涉外经济学院学生奖励办法》第十一条、第十七条的规定条件，以不多于本学院毕业生总人数的5%(详见名额分配表)推荐。 2、省级优秀毕业生 省级优秀毕业生在校级优秀毕业中择优产生，其人数不超过毕业生总数的2%(详见名额分配表)。 省级优秀毕业生应具备下述条件之一： (1)被评为省级三好学生、优秀党员、优秀团员或优秀学生干
部、优秀党员干部、优秀团员干部； (2)两次（含两次）以上被评为校级三好学生、优秀党员、优秀团员或校级优秀学生干部、优秀党员干部、优秀团员干部； (3)在某一方面表现突出，成绩显著，曾获得省级或省级以上奖励。 （二）三好学生 依照《湖南涉外经济学院学生奖励办法》第十条、十一条的规定条件，由学院不限额推荐。 （三）优秀学生干部 依照《湖南涉外经济学院学生奖励办法》第十条、十一条的规定条件，由学院不限额推荐。 三、相关要求 （一）各学院将被推荐为优秀毕业生、三好学生、优秀学生干部的名单确定后，依惯例在学院公示5个工作日后，于2012年 12月21日（周五）之前，将最终确定名单与相关材料(含学院初评总结报告)报学生工作处学生管理科杨建波老师处。 （二）学院报学生工作处的材料包括优秀毕业生（省级、校级）、三好学生、优秀学生干部审批表纸质稿1份，大学期间所有获奖证书（校级及以上）复印件各1份，先进事迹材料打印件1份(不 少于1000字)，以及优秀毕业生（省级、校级）、三好学生、优秀学生干部推荐名册纸质稿及EXCEL电子稿各1份。 四、奖励
Unit 3 Science versus nature 同步练习(三) 总分 100分 时间 45 分钟 成绩评定 __________________ I. 根据首字母提示或中文提示补全单词: （每题2分，共20分） 1. A S__________ has many fathers, but failure is an orphan. 2. B I want you to live and learn for the b__________ of mankind. 3. B In c______________ of your bad work, I am forced to dismiss you. 4. A His educational ideas were in a_____________ of his time. 5. C We said things would turn out well, and s__________ enough they did. 6. A I ___________(完全) disagree with almost everything we ’ve heard from him. 7. A Do you find it hard to keep up with the ______________(医学) development? 8. A Using other people for your own profit is an _____________ (不道德) action. 9. B During the summer vacations, some teachers attend __________(研究班) at college. 10. B As they had no children of their own, they ___________ (领养) an orphan. II. 翻译下列句子：（每题6分，共30分） 1. A 这里的食物比上海便宜，而衣服却要贵些。 (on the other hand) ______________________________________________________________________ 2. A 既然这问题解决了，那就没有什么能够阻止我们推行这项新计划。 (push ahead with) _____________________________________________________________________ 3. B 越来越多的人将从这一重大发明中受益。 (benefit from) ____________________________________________________________________ 4. A 你学习很努力，所以通过了考试。 ( in consequence) ____________________________________________________________________ 5. A 我们的晚餐以水果和咖啡结束。 (end up) ___________________________________________________________________ III. 阅读理解：（每题5分，共25分） Ahhh, the great outdo ors! You can’t beat it, can you? Clean air and beautiful countryside are just what So you want to go? Well, first of all, where will you camp? There are camping grounds all over China. Do you want to explore lakes, mountains, the forest or the seaside? The choice is yours! You will need a tent. Most tents are made of light, brightly-coloured material and are easy to put up. They come with a groundsheet, which stops water gett ing in, as well as a fly screen, so that bugs don’t fly into your tent at night. Take a sleeping bag and sleeping mat. Check the weather! Are you going somewhere cold or hot? You can buy sleeping bags of different thicknesses. Make sure you bring the right clothes. If you want to go hiking, you will need a strong pair of walking boots, some lightweight trousers, and a waterproof coat. A good map and compass are needed too. Cooking outside is fun. Make sure you put your camping stove far away from the tent, too close and you might cause a fire. Bring packaged food as you will not have a refrigerator. Also, plastic cups and plates are lighter to carry than china. Make sure you bring enough clean water. Taking water from streams and lakes is dangerous, as it 预习 课堂 创新
山东省2019-2020高三最新英语试卷--完形填空精选 山东师范大学附属中学2020届高三上学期英语 If you have strong arms and feet, patience and a good temper, you might 36 a good waiter. You must start, 37 , not in the restaurant, but in the kitchen, helping the chef, to le arn how each dish is 38 . From this first step, you may enter the restaurant 39 a “commis” (厨助). But you won’t be 40 to serve the customers yet. They will only let you do the bottomed jobs, 41 the tables and carrying the plates. But all the time you must watch and learn with 42 . Later you may become “chef de rang” (a waiter in charge of a number of tables). You may even become a head waiter 43 , if you have the right sort of personality and you are not 44 of hard work. When Carlo Bianchi first arrived in London, he spoke only two words of English - “please” and “Hello”. He 45 to get a job helping in the kitchen of a restaurant, and he spent what little 46 time he had learning English. He was a good worker and soon they 47 him a job in the restaurant as a waiter. Every night, Carlo 48 to go home exhausted, but never too 49 to study the language for half an hour before going to sleep. And no matter how tired or ill he felt, he always wore a 50 for his customers. They liked him, and people came and asked to be 51 by Carlo. Now, twenty-five years later, Carlo is in 52 of six restaurants, and he 53 to open a seventh shortly. So friends, in this world success never comes overnight. Start from the 54 and make progress step by step with enough patience and 55 chances will fall upon you. 36. A. make B. create C. replace D. choose 37. A. otherwise B. therefore C. thus D. however 38. A. commented B. tasted C. prepared D. chosen 39. A. as B. for C. with D. to 40. A. forced B. allowed C. banned D. urged 41. A. moving B. laying C. pushing D. placing 42. A. curiosity B. kindness C. patience D. interest 43. A. simply B. specially C. exactly D. eventually 44. A. afraid B. ashamed C. fond D. typical 45. A. managed B. attempted C. predicted D. expected 46. A. tight B. useful C. spare D. busy 47. A. threw B. found C. sent D. donated 48. A. used B. promised C. regretted D. remembered
Unit 2 Sporting events 同步练习(六) 总分 100分 时间 50 分钟 成绩评定 __________________ I. 用正确的情态动词填空：（共10分）A 1. A When my father was young, he _________ read newspapers at breakfast. 2. A I promise I _________ tell anyone what happened. 3. A I’ve bought Mary a present. Do you think she _________ like it? 4. A I’m afraid I ________ come to your party next week. 5. A I’ve lost one of my gloves. I ________ have dropped it somewhere. 6. A They haven’t lived here for lo ng. They _______ know many people. 7. A Ted isn’t at work today. He ________ be ill. 8. A Ted wasn’t at work last week. He ________ have been ill. 9. B Look. Jack is putting on his hat and coat. He ________ (go) out. 10. B Why didn’t Tom answer the doorbell? I’m sure he was in the house at the time. He ______ (hear) the bell. II. 情态动词：（每题2分，共50分） 1. A It _________ be difficult to learn Japanese. A. shall B. must C. should D. need 2. A I want to go to the hospital, but you ________ with me. A. need to not go B. do not need go C. need not go D. need go out 3. A The boy ________ be hungry now. He’s just had a big dinner. A. mustn’t B. can’t C. mayn’t D. needn’t 4. A —— Where is Anna? —— She _______ at home. A. may have been B. may be C. might have been D. can be 5. A ——Who broke the glass? —— Xiao Ling________. A. will not do B. should have C. may have D. can have 6. A The door is still closed. He ________ the key. A. must have lost B. must lost C. need have lost D. lost 7. B Your shirt is dirty. _________ it for you? A. Am I going to wash B. Will I wash C. Am I washing D. Shall I wash 8. A You ________ hours when I went to your room. A. must work B. have worked C. must have been working D. must be working 9. B When Marx was in London, be ______ read at the library for hours. A. would B. might C. could D. should 10. B Messages _______ be changed from sound into electricity before they _______ be sent by radio. A. must; will B. have to; can C. can; must D. need; may 11. A The prisoner ________ have run away this way, for here are his footprints. A. should B. could C. need D. must 12. A ______ bring you something to eat? 预习 课堂
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Unit 2 Growing pains 同步练习(四) 总分 100分 时间 45 分钟 成绩评定 __________________ I. 说出turn up 在下列各句中的中文意思：(每题2分，共10分) 1. A We had planned to meet at the station, but he didn ’t turn up . 2. A Turn up the dictionary if you cannot spell the word. 3. A Turn the radio up a little. I can hardly hear the program. 4. B The sight of all that blood quite turn s me up . 5. B He turned the coat collar up because of the wind. II. 用所给短语的适当形式填空：（每题2分，共20分） 1. B We don ’t want to ___________ the young man. 2. A Tom is very untidy; he always leaves his room ___________. 3. A We __________ (not) smoking in this building. 4. B Oh dear! My coat ___________ in the bus. 5. B —— They don ’t agree with my idea? —— Well, that ’s __________. 6. C What ’s wrong with the cake? It is still _____________. 7. B ___________ the gas; vegetables should be cooked quickly. 8. A It is __________ your talking to him. 9. A As soon as he heard the good news, he ___________ go home to tell it to his parents. 10. C She lost her job and had to return to ________________. III.相似词语辨析：（共10分） Holiday / vacation ①A The summer _____ usually begins at the beginning of July. ②A He is away on _________. ③B Christmas is a ______ for everybody in the West. ④C In Britain, universities have ___________ while schools have _________. ⑤A We had ________ and so we went to the seaside. IV . 将表中的短语填入相应的句中：（共10分） 预习 课堂 to be expected a waste of time in a mess turn up go untouched can ’t wait to be supposed to the kitchen sink be hard on leave behind at the moment at any moment for a moment for the moment in a moment after a moment the moment
江苏省赣榆县海头高级中学2020-2021学年高一上学期第一 次月考化学试题 学校:___________姓名：___________班级：___________考号：___________ 一、单选题 1．右图为农夫山泉矿泉水瓶上的部分说明文字，列出了该饮用天然水理化指标。这里的钙、镁、钾、钠是指 A．原子B．分子C．单质 D．元素 2．下列各组物质中，依次属于单质、酸、盐的一组是 A．干冰、石灰石、氧化钙B．液氯、硝酸、纯碱C．水、烧碱、食盐D．氧气、盐酸、熟石灰3．下列各组物质，前者属于电解质，后者属于非电解质的是A．NaCl晶体、BaSO B．铜、二氧化硫 4 、硫酸溶液C．液态的醋酸、酒精D．熔融的KNO 3 4．气体的体积主要由以下什么因素决定的：①气体分子的直径②气体物质的量的多少③气体分子间的平均距离④气体分子的相对分子质量（） 1
A．①②B．①③C．②③D．②④5．实验室用如图所示的装置蒸馏海水，下列说法正确的是 A．蒸馏烧瓶中加入碎瓷片的作用是防止暴 沸 B．实验时冷却水应从a进入，从b流出. C．锥形瓶中能收集到高浓度的氯化钠溶液 D．该装置可用于分离海水中的NaCl和MgCl 2 6．胶体与其他分散系本质的区别是（） A．是否具有吸附性B．能否发生丁达尔现象 C．是否均一、稳定、透明D．分散质粒子直径大小 7．下列说法中正确的是（） A．HNO3的摩尔质量为63g B．含有阿伏加德罗常数个微粒的集合体为1mol C．64gSO2中含有1molO2D．一个氮气分子的实际质量约为14/N A g 8．下列化学反应中，属于氧化还原反应的是（） A．2FeCl2+Cl2=2FeCl3B．H2CO3=H2O+CO2 C．NaOH+HCl=NaCl+H2O D．NH3+HCl=NH4Cl 9．用N A表示阿伏加德罗常数的值，下列说法中正确的是（） A．28g氮气所含有的原子数目为N A B．常温常压下，22.4L氯化氢所含的原子数为2N A C．标准状况下，22.4L水中含有个水分子N A D．2.4g镁与足量的盐酸反应，失去的电子数为0.2N A 10．氧化还原反应与四种基本反应类型的关系如图所示。下列化学反应属于阴影部分的是
Unit 2 language 同步练习(七) Project: Designing a booklet I. 根据首字母提示或中文提示补全单词： 1. The climate in the north d____________ from the climate in the south. 2. Chinese has no alphabet (字母) and is written in c__________. 3. Chinese words are often formed by c____________ different chanracters. 4. China is a country which becomes more and more d_________. 5. The sign “&” r________ the word “and”. 6. “High” is the o_____________ of the word “low”. 7. He worked hard and e__________(最后) made himself ill. 8. He has become a _________ (传奇人物) in his own time for his scientific discoveries. 9. She is walking in the _____________ (方向) of the police station. 10. This is not what we _________ (原先) set out to do. II. 介词填空： 1. Coins may be ________ different sizes, weights, shapes and metals. 2. He saw the footprints of birds and animals ______ the snow. 3. _______ a whole, the characters have developed ______ drawings into standard forms. 4. Caterpillers (毛毛虫) turn _______ butterflies. 5. He likes money ______ the form of coins, notes and cheques. 6. The thief was sent ______ prison for a year. 7. We took seats opposite _____ the teachers. 8. The Fourth of July is celebrated __________ the United States. 9. That bridge ________ this river is the oldest in town. 10. You may depend ________ it that he will come here on time. III. 单项选择： 1. He used to write home once a week. From this sentence we understand that _________. A. he never forgot writing a weekly letter home B. he was forced to write home every week C. no w he doesn’t write home every week D. he enjoys writing home every week 2. “I cah’t help feeling worried about Torn.” means the speaker ________. A. can do nothing to help Tom B. doesn’t worry about Tom C. is glad to have someone like Tom to worry about D. finds it impossible not to worry about Tom 3. Mrs. Brown said, “Janet may have gone to the cinema.” Mr. Brown meant that _________. A. she knew Janet hod gone to the cinema B. Janet was allowed to go to the cinema C. she wasn’t quite sure w hether Janet had gone to the cinema D. Janet had certainly not gone to the cinema 4. “Mr. White is by far the richest man I know.” means Mr. White ________. A. is richer than all his friends B. is the richest man in my country