高二英语选修一北师大版答案
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高二英语北师大版月考试题
英语试题
高二英语周考试题 2014.02.15 英语知识运用
第一节 单选填空
21. There was more than ______ rain and snow last year,so some parts of the country have been flooded this spring.
A.extra B.efficient C.permanent
on in the world outside.
A.connected B.known C.updated D.informed
23.He didn't ______ to what I said because his mind was on something else.
A.hold on B.catch on C.take in D.get over
24. Elephants have their own way to tell the shape of an object,______ it is rough or smooth.
A.不填 B.whether C.how
A.make D.what D.ensure 25.
高二北师大版英语学生双语报1期
2014-2015学年高二SD版·第1期测试题参考答案及部分解析 第1期测试题参考答案 1-5 BBCCA
6-10 ACABA
11-15 BAAAC 16-20 CCCBA 选做题 17-20 (One possible version) 17. plastic 19. $35
18. brown 20. Soft-touch
21-25 CDBBD 26-30 CBBDB
31-35 DCDAD 36-40 EFBGC 41-45 CDACA
46-50 DDACD
51-55 CDBAD 56-60 BCDCA 61-70 (One possible version) 61. college 63. have lived 65. boring
62. graduated 64. before 66. the 68. driving 70. happily
67. could 69. She
短文改错(One possible version)
Eating
高二数学2013北师大版选修2-3第二章 概率检测题及答案解析
综合检测第二章 概 率
一、选择题
1.一个袋中有5个白球和3个红球,从中任取3个,则下列叙述中是离散型随机变量的是( ) A.所取球的个数B.其中所含白球的个数C.所取白球和红球的总数D.袋中球的总数 2.若随机变量ξ的分布列如下表所示,则p1等于( ) A.0
21B. C. 1515
D.1
ξ P -1 1 52 2 34 p1 3.投掷3枚质地均匀的硬币,至少有一枚正面向上的概率是( ) 3A. 8
15B. C. 28
7
D. 8
2
4.在比赛中,如果运动员A胜运动员B的概率是,假设每次比赛互不影响,那么在五次比赛中运动员A恰有
3三次获胜的概率是( )
40A. 243
80110B. C. 243243
20
D. 243
5.一个口袋装有2个白球和3个黑球,第一次摸出1个白球后放回,则再摸出1个白球的概率是( ) 2A. 3
12B. C. 45
1
D. 5
13
6.已知P(B|A)=,P(A)=,则P(AB)=( )
3514
A. 15
72B. C. 105
1
D. 5
7.某校高考数学成绩近似地服从正态分布N(100,102),则该校
高二精选题库 化学7-1北师大版
第7章 第1节
1.一定量的锌粉和6 mol/L的过量盐酸反应,当向其中加入少量的下列物质时,能够加快反应速率,又不影响产生H2的总量的是
( )
①石墨 ②CuO ③铜粉 ④铁粉 ⑤浓盐酸 A.①②⑤ C.③④⑤
B.①③⑤ D.①③④
解析:①③中所加物质与锌粉在盐酸中形成许多微小原电池,使反应速率加快;②中CuO溶于盐酸后会消耗锌,使H2总量变小;④中铁粉会与过量的盐酸反应,使H2总量增加.
答案:B
2.已知4NH3+5O24NO+6H2O,若反应速率分别用v(NH3)、v(O2)、v(H2O)、v(NO)(mol/(L·min))来表示,则正确的关系是
( )
4
A.v(NH3)=v(O2) 5
5
B.v(O2)=v(H2O) 6
2
C.v(NH3)=v(H2O) 3
4
D.v(O2)=v(NO) 5
解析:同一反应用不同物质来表示反应速率时,速率之比等于方程式的化学计量数之比,4
A中v(NH3)=v(O2),系数关系不对,因此不正确;同理B、C均不正确.
5
答案:D
3.某温度下,浓度都是1 mol/L的两种气体X2和Y2,在密闭容器中反应生成气体Z,经过t min后,测得物质的浓度分别为c(X2)=0.4 mol
高二精选题库 数学10-3北师大版
第10模块 第1节
[知能演练]
一、选择题
1.观察下列散点图,则①正相关;②负相关;③不相关.它们的排列顺序与图形相对应的是
( )
A.a-①,b-②,c-③ B.a-②,b-③,c-① C.a-②,b-①,c-③ D.a-①,b-③,c-②
解析:该题考查变量的相关性的图形表示法,在相关变量中,要注意点的排列规律与正、负相关的联系.
答案:D
2.三点(3,10),(7,20),(11,24)的回归方程是
( )
^
A.y=-5.75+1.75x ^
B.y=1.75x+5.75 ^
C.y=-1.75x+5.75 ^
D.y=-1.75x-5.75
-3+7+11-10+20+24解析:x==7,y==18.
33
i=1
?xiyi=3×10+7×20+11×24=434,
3
3
i=1
222
?x2i=3+7+11=179,
^b=
i=1
?xiyi-3x y?xi2-3x2
3
3
--
434-3×7×1856===1.75,
32179-3×49
-
i=1
^-^-
a=y-bx=18-1.75×7=5.75. ^
∴y=1.75x+5.75. 答案:B
3.下面是2×2列联表:
x1 x2 合计 则表中a,b的值分别为 ( )
A.94,7
北师大专科英语(二)作业
北师大专科英语(二)作业
Part I Vocabulary & Structure 词汇与结构(每小题 2 分,共 30 小题,满分 6 0 分) Directions:These are 10 incomplete statements here.You are required to complete each statement by choosing the appropriate answer from the 4 c hoices marked A),B),C) and D).此部分共有 10 个未完成的句子。每个句 子中未完成的部分有四个选项,请从 A、B、C、D 四个选项中选出正确选项。 There __________ a meeting tomorrow afternoon. will be going to will going to be is going to be will go to be They ________ an English evening next Sunday. are having are going to have will having is going to have The train
北师大版高中英语选修七Unit19词汇
Unit 19 Lesson one
1. get ahead 取得进步,获得成功
get ahead with/ at /in sth.在某方面取得成功 get ahead of sb.领先某人
get ahead with one’s work . 工作取得进展 want to get ahead in life 想出人头地
. 他总是试图处处领先他人。He always tries to get ahead of others in everything. 2 stand out显眼,引人注目
他学习很好,在全班中非常突出。He does well in study and he stands out in his class.
3 absence n. 缺乏,缺少,缺席
in the absence of (由于)缺乏,不存在 We are in the absence of experience. 我们缺乏经验。
absent adj. 缺席的; v. 缺席
How many students are absent today? 今天有多少学生缺席?
4.take the form of采取……的形式,以……的形式出现 课堂是
北师大版高一英语必修二单元测试题及答案全套
北师大版高一英语必修二单元测试题及答案全套
单元质量检测(一)
(时间:100分钟 满分:120分)
Ⅰ.阅读理解(共15小题; 每小题2分,满分30分)
A
Often people use laptops (笔记本电脑) on trains and airplanes, in airports and hotels. These laptops connect people to their workplace. In the United States today, laptops also connect students to their classrooms. Westlake College in Virginia will start a laptop computer program that allows students to do schoolwork anywhere they want. Within five years, each of the 1,500 students at the college will receive a laptop. The laptops are par
2017届高考英语一轮复习 Unit 17 Laughter 北师大版选修6
Unit 17 Laughter
Ⅰ.单词—在语境中默写,在联想中积累
[写得准] 1.withdraw vt. 提取;撤退
2.overlook vt. 忽视 3.forgetful adj. 健忘的 4.clarify vt. 澄清,讲清楚 5.delay n. 延误,延期
so much a scientific achievement as a technical accomplishment
[用得活] 用所给词的适当形式填空 1.The Apollo program was not
[积得多] 1.“金融”相关词荟萃 ①account n. 账目;账户
②budget n. 预算(案) ③capital n. 资金;资本 ④cheque n. 支票 ⑤interest n. 利息
6.acknowledge vt. 认可,承认 (accomplish). 7.figure n. 人物 8.scold vt. 骂,责骂 9.forbid vt. 禁止,不准 10.obtain vt. 得到,获得 11.starve vi. 挨饿,饿死 12.toug
2017届高考英语一轮复习 Unit 17 Laughter 北师大版选修6
Unit 17 Laughter
Ⅰ.单词—在语境中默写,在联想中积累
[写得准] 1.withdraw vt. 提取;撤退
2.overlook vt. 忽视 3.forgetful adj. 健忘的 4.clarify vt. 澄清,讲清楚 5.delay n. 延误,延期
so much a scientific achievement as a technical accomplishment
[用得活] 用所给词的适当形式填空 1.The Apollo program was not
[积得多] 1.“金融”相关词荟萃 ①account n. 账目;账户
②budget n. 预算(案) ③capital n. 资金;资本 ④cheque n. 支票 ⑤interest n. 利息
6.acknowledge vt. 认可,承认 (accomplish). 7.figure n. 人物 8.scold vt. 骂,责骂 9.forbid vt. 禁止,不准 10.obtain vt. 得到,获得 11.starve vi. 挨饿,饿死 12.toug