精校word版答案全---2018-2019学年河北省武邑中学高一上学期第三次月考英语试题

武邑中学2018-2019学年上学期高三年级第三次调研数学（文）试题(考试时间：120分钟 总分：150分)★友情提示：要把所有答案都写在答题卷上，写在试卷上的答案无效。

一、选择题（每题5分共60分，在每小题给出的四个选项中只有一项是符合题目要求的） 1．若集合2{3}A x x x =∈<R ，{12}B x x =-<<，则AB =（ ）A ．{10}x x -<<B ．{13}x x -<<C ．{02}x x << D ．{03}x x <<2．已知i 是虚数单位，z 表示复数z 的共轭复数．若4i z =-，则1zz=+ ( ) A ．199i 2626+ B ．199i 2626- C ．199i 2626-+ D ．199i 2626--3.幂函数2()(1)m f x m m x =--在()0,+∞上是增函数,则m = ( )A.2B.1C.4D.2或-14．已知幂函数 的图象过点，则log 4 f(2)的值为（ ）A ．B ． －C ．2D ．－25．已知，则函数f(x)=(a 2-2)x+b 为增函数的概率是（ ）A.B. C. D6.若圆C 的半径为1，其圆心与点（1,0）关于直线y x =对称，则圆C 的标准方程为（ ）A ．22(1)1x y -+= B ．22(1)1y x ++= C ．22(1)1y x -+= D ．22(1)1x y ++=7.双曲线221my x -=的一个顶点在抛物线的212y x =的准线上，则该双曲线的离心率为（ ）A ．．8.已知直线(2)(0)y k x k =+>与抛物线C ：28y x =相交于A ，B 两点，F 为C 的焦点，若2FA FB =,则k=（ ） A ．13B．3 C ．23 D．39.《九章算术》“竹九节”问题：现有一根九节的竹子，自上而下各节的容积成等差数列，上面4节的容积共3升，下面3节的容积共4升，则第五节的容积为（ ）A ．6766升 B ．4744升 C.3733升 D ．1升 10.某几何体的三视图如图所示，则该几何体的体积为（ ）A ．176π B ．173π C.5π D ．136π. 11、已知定义在R 上的函数)(x f 满足0)1()(=++x f x f ，当]5,3[∈x 时，|4|2)(--=x x f ，则（ ） A. )1(cos )1(sin f f > B. )32(cos )32(sin ππf f <C. )6(cos)6(sinππf f < D. )2(cos )2(sin f f >12、设函数2ax y =与函数|1ln |axx y +=的图象恰有3个不同的交点，则实数a 的取值范围为（ ） A.),33(e e B.)33,0()0,33(e e ⋃- C. )33,0(e D. }33{)1,1(e e⋃二、填空题（每小题5分，共20分，.将答案填入答卷指定位置）.()的值为，则的图像经过点、已知幂函数)4(2,2)(13f x f .14、曲线sin x y x e =+在点(0,1)处的切线方程是 15．已知椭圆Ｃ：22221(0)x y a b a b +=>>的右顶点为Ａ，Ｐ是椭圆Ｃ上一点，Ｏ为坐标原点，已知060,POA OP AP∠=⊥且，则椭圆的离心率为 ．16．已知函数f （n ）=n 2cos（n π），数列{a n }满足a n =f （n ）+f （n+1）（n ∈N +），则a 1+a 2+…+a 2n = ． 三．解答题（本大题共6小题，满分70分，解答应写出文字说明，推理过程或演算步骤） 17. (本小题满分12分)已知等比数列{}n a 的公比为q （1q ≠），等差数列{}n b 的公差也为q ，且12323a a a +=．）求q 的值；(II ）若数列{}n b 的首项为2，其前n 项和为n T ， 当2n ≥时，试比较n b 与n T 的大小.18. (本小题满分12分) 已知函数21cos 2sin 23)(2+-=x x x f .（1）当]2,0[π∈x 时，求函数)(x f 的取值范围；（2）将)(x f 的图象向左平移6π个单位得到函数)(x g 的图象，求)(x g 的单调递增区间.19．(本小题满分12分)已知△ABC 的内角A 、B 、C 的对边分别为a ，b ，c ＝4c ，B ＝2C ． （Ⅰ）求cosB 的值；（Ⅱ）若c ＝5，点D 为边BC 上一点，且BD ＝6，求△ADC 的面积．20. (本小题满分12分) 已知数列{}n a 的首项11a =，前n 项和为n S ，+1=2+1n n a S ，*n ∈N . （1）求数列{}n a 的通项公式；（2）设31log n n b a +=，求数列{}n n a b +的前n 项和n T .21．(本小题满分12分) 已知函数。

河北武邑中学2018-2019学年高一年级上学期12月份月考数 学 试 卷一、选择题：本大题共12个小题,每小题5分,共60分．在每小题给出的四个选项中，只有一项是符合题目要求的． 1．下列几何体是组合体的是（ ）2．对于命题，使得，则是 A ．， B ．，C ．，D ．,3．已知函数，且，则实数a 的值是（ ）A ． 1B ． 2C ． 3D ． 44. 已知角α的终边经过点(－4，3)，则cosα＝ ( )A.45B.35 C ．－35 D ．－455. 若sinθcosθ<0，则角θ是 ( )A ．第一或第二象限角B ．第二或第三象限角C ．第二或第四象限角D ．第三或第四象限角 6.已知A ＝{x |x ≤2，x ∈R }，a ＝，b ＝2，则( )A ．a ∈A ，且b ∉AB ．a ∉A ，且b ∈AC ．a ∈A ，且b ∈AD ．a ∉A ，且b ∉A7.把函数y ＝f (x )的图象向左，向下分别平移2个单位，得到y ＝2x 的图象，则f (x )的解析式是( )A ． f (x )＝2x ＋2＋2B ．f (x )＝2x ＋2－2C ．f (x )＝2x －2＋2D ．f (x )＝2x －2－28.一个半径为R 的扇形，他的周长是R 4，则这个扇形所含的弓形的面积是 （ ）A.2)1cos 1sin 2(21R - B.1cos 1sin 212R C.221R D.)1cos 1sin 1(2-RAB CD9.函数1cos 2-=x y 的定义域为（ ）A ．⎥⎦⎤⎢⎣⎡-3,3ππ B ．Z ∈⎥⎦⎤⎢⎣⎡+-k k k ,32,32ππππ C ．⎪⎭⎫⎝⎛-3,3ππ D.Z ∈⎪⎭⎫ ⎝⎛+-k k k ,32,32ππππ10.设函数)0)(6cos()(>-=ωπωx x f .若)4()(πf x f ≤対任意的实数x 都成立，则ω的最小值为 （ ）A.31B.21C.32 D.111. 已知函数⎩⎨⎧>≤+-=1,log 1,4)13()(x x x a x a x f a 是(,)-∞+∞上的减函数，那么a 的取值范围是（ ）.(0,1)A 1B.(0,)3 11C.[,)73 1D.[,1)712. 设函数(x)y f =在R 上有意义，对给定正数M ，定义函数(x),f(x)M(x){,(x)MM f f M f ≤=>，则称函数(x)M f 为(x)f 的“孪生函数”，若给定函数2(x)2x f =-，1M =，则M (x)y f =的值域为（ ）.[1,2]A B.[1,2]- C .(,2]-∞ D.(,1]-∞二、填空题（每题5分，满分20分，将答案填在答题纸上）13．三棱锥的三条侧棱两两垂直，其长分别为3、2、1，则该三棱锥的外接球的表面积 . 14．若，则=___________________15．已知函数f (x )是R 上的奇函数，且f (x ＋2)＝－f (x )，当x ∈(0,2)时，f (x )＝x 2，则f (7)＝________.16．已知关于x 的函数y ＝log a (2－ax )在（0,1）上是减函数， 则a 的取值范围是________三、解答题（本大题共6小题，共70分．解答应写出文字说明、证明过程或演算步骤．）17．（本题10分）已知()()()()()3sin 3cos 2sin 2cos sin f ππαπαααπαπα⎛⎫--- ⎪⎝⎭=---（1）化简()f α（2）若α是第二象限角,且1cos 23πα⎛⎫+=- ⎪⎝⎭,求()f α的值.18．（本小题满分12分）设全集R U =，集合{}{}1,3->=≤=x x B x x A . （Ⅰ）求A B A B 和 ;（Ⅱ）求错误！未找到引用源。

河北武邑中学2018-2019学年上学期高三第三次调研数学(理科)试题第Ⅰ卷一、选择题：此题共12 小题，每题 5 分。

在每题给出的四个选项中，只有一项是切合题目要求的。

1．已知P1,0, 2Q y y sin x, x R ，则P Q ( )A. B.0 C.1,0 D.1,0,2 2．“a 3 ”是“函数 f x x24ax 1在区间4,上为增函数”的( )A.充足不用要条件B.必需不充足条件C.充要条件D.既不充足也不用要条件3．设直线m、 n 和平面α、β，以下四个命题中，正确的选项是( )A．若m∥ α，n∥ α，则m∥nB．若m? α，n? α，m∥ β，n∥ β，则α ∥ βC．若α ⊥ β，m? α，则m⊥ βD．若α ⊥ β，m⊥ β，m?α，则m∥ α4．以下四个命题:(1)存在与两条异面直线都平行的平面；(2) 过空间一点 , 必定能作一个平面与两条异面直线都平行； (3)过平面外一点可作无数条直线与该平面平行；(4)过直线外一点可作无数个平面与该直线平行. 此中正确的命题的个数是（）A. 1B.2C.3D.45 设a log211， b e 2，c ln，则（）3A．c a b B．a c b C． a b c D ．b a c6．函数f (x)在(, ) 单一递减，且为奇函数．若 f (1) 1 ，则知足 1 f ( x2) 1的x 的取值范围是()A．[ 2,2]B．[ 1,1]C．[0,4]D．[1,3]2(x1)2xf ( x 1) 5 的解集为()7. 已知f ( x)，则不等式 x1( x1)A．(1, ) B ．(,5) (1, ) C ．(,5) (0, ) D ．( 5,1)（7 题图）（8 题图）8. 已知函数 f ( x)＝e x－1，g( x)＝－ x2＋4x－3，若存在 f ( a)＝ g( b)，则实数 b 的取值范围为()A.[0，3]B.(1 ，3)C.[2－2， 2＋ 2]D.(2 －2， 2＋ 2)9．已知函数 f x x 2ln x，则函数 y f x 的大概图像为（）x10．已知函数 f （ x）=2sinxsin （ x+3φ）是奇函数，此中，则函数g（x）=cos（2x-φ）的图象（）A. 对于点对称B.对于轴对称C. 可由函数 f （ x）的图象向右平移个单位获取D.可由函数 f （ x）的图象向左平移个单位获取11．定义在R上的函数f ( x)知足：f ( x) f '(x) 1， f (0) 4 ，则不等式e x f ( x) e x3的解集为（）12．已知 f ( x) 是定在R上的偶函数，于x R ,都有f (2 x) f (x) 0,当 x [0,1]， f ( x)x2 1，若 a[ f ( x)] 2bf ( x) 30 在[-1,5]上有五个根，此五个根的和是（）A．7B．8C．10D．12第Ⅱ卷本卷包含必考和考两部分。

武邑中学2018-2019学年上学期高三年级第三次调研英语试题第一卷第一部分听力(共两节，满分30分)做题时，先将答案标在试卷上。

录音内容结束后。

你将有两分钟时间将试卷上的答案转涂到答题卡上。

第一节(共5小题；每小题1.5分，满分7.5分)听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. What are the speakers talking about?A. Driving.B. The Internet.C. Their job.2. How long has the man been a bus driver?A. Two months.B. Three months.C. Four months.3. What does the woman work as now?A. A waitress.B. A manager.C. A cashier.4. Where are the two speakers?A. In a bookstore.B. In a library.C. In the classroom.5. What does the woman think of the pet dog?A. Lovely.B. Annoying.C. Lazy.第二节(共15小题；每小题1.5分，满分22.5分)听下而5段对话或独白。

每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并标在试卷的相应位置。

听每段对话或独白前，你将有时间阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听笫6段材料，回答第6至7题。

6. When will the man probably check out of his room?A. On May 14th.B. On May 16th，C. On May 17th.7. What kind of room does the man reserve?A. A single smoking room.B. A single non-smoking room.C. A double non-smoking room. 听第7段材料，回答第8至9题。

河北武邑中学2018—2019学年上学期高一第三次月考英语试题本试卷分为第I卷（选择题）和第II卷（非选择题）两部分，共150分。

考试时间120分钟。

第I卷第一部分听力（共两节，满分30分）第一节听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下-d,题。

每段对话仅读一遍。

第二部分阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）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，并在答题卡上将该项涂黑。

AOn the way to my company, I was driving behind a small truck. I was a few minutes late and watching the two men ahead of me talking in that slow truck made me angry.The light turned green, but the truck was still moving very slowly. I became impatient, so I turned right to go past it. Suddenly, a new blue Chevy Silverado was rushing by. I tried to stop, but my car hit the side of the Chevy.“Pow！” I heard a big noise and then I realized that an accident happened. For a momen t, just a moment... I asked if I was OK, and honestly, I was waiting for people to come over and help me. Those thoughts didn't last long, as the answer came into my mind that the air bag had saved me. Luckily, I was still alive.Slowly I opened the door. The warm, bright morning sunlight hit my face and I felt better. I saw the Chevy Silverado and I ran over to check if the driver in it was injured. “Are you OK？”I shouted loudly through the window. His head was down, eyes closed, and he didn't answer me.At that moment, I thought I was looking at a dead man. Full of fear, I shouted again, andknocked at the window heavily once more. His eyes started to open, and he slowly shook his head, “Yes.”Once again，I said to myself, “How lucky I am！”1. The writer was in such a hurry because ______.A. he must wait for the green lightsB. his car was behind a slow truckC. he wanted to go past the small truckD. he was a little bit late for his work2. The time when the accident happened was ________.A. in the afternoonB. at noonC. in the morningD. in the evening3. Which of the following is WRONG according to the passage?A. Someone else helped the writer when the accident happened.B. The writer's car hit the side of the Chevy Silverado.C. The driver of the Chevy Silverado didn't answer the driver at first.D. There were at least two men in the slow truck.【答案】1. D 2. C 3. A【解析】本文是一篇记叙文，早晨上班的时候，因为要迟到了，作者十分着急。

1．函数f (x )＝⎩⎪⎨⎪⎧2x 2 x ， 2x ， 3x的值域是( )A ．RB ． D ．{y |0≤y ≤2,或y ＝3}2．若定义在R 上的二次函数f (x )＝ax 2－4ax ＋b 在区间上是增函数,且f (m )≥f (0),则实数m 的取值范围是( )A ．0≤m ≤4 B ．0≤m ≤2 C ．m ≤0 D ．m ≤0或m ≥43．已知x ≠0,函数f (x )满足f ⎝⎛⎭⎪⎫x －1x ＝x 2＋1x2,则f (x )的表达式为( )A ．f (x )＝x ＋1xB ．f (x )＝x 2＋2C ．f (x )＝x 2D ．f (x )＝⎝⎛⎭⎪⎫x －1x24、 函数f (x )＝xx －1在区间上的值域为________．5．如果二次函数f (x )＝x 2－(a －1)x ＋5在区间⎝ ⎛⎭⎪⎫12，1上是增函数,则实数a 的取值范围为________．6．若函数f (x )＝⎩⎪⎨⎪⎧x 2＋2xx gxx为奇函数,则f (g (－1))＝________、7．已知函数f (x )(x ∈R)满足f (x )＝2bxax －1,a ≠0,f (1)＝1且使f (x )＝2x 成立的实数x 只有一个,求函数f (x )的表达式．8．若函数f (x )＝⎩⎪⎨⎪⎧b －x ＋b －1x ，－x 2＋－bxx，在(－∞,＋∞)上为增函数,求实数b的取值范围．(2)已知偶函数f (x )(x ∈R),当x ≥0时,f (x )＝x (5－x )＋1,求f (x )在R 上的解析式．寒假作业3答案1 解析 作出分段函数的图象易知．答案 D2解析 由f (x )在区间上是增函数,所以f (2)>f (0),解得a <0、又因f (x )图象的对称轴为x ＝－－4a2a＝2、所以x 在上的值域与上的值域相同,所以满足f (m )≥f (0)的m 的取值范围是0≤m ≤4、答案 A 3、答案 B4 答案 ⎣⎢⎡⎦⎥⎤54，25解析 ∵函数f (x )＝x 2－(a －1)x ＋5的对称轴为x ＝a －12且在区间⎝ ⎛⎭⎪⎫12，1上是增函数,∴a －12≤12,即a ≤2、答案 (－∞,2]6解析 当x <0时,则－x >0,由f (x )是奇函数,所以f (－x )＝－f (x )＝(－x )2－2x ＝x 2－2x , 所以f (x )＝－x 2＋2x 、 即g (x )＝－x 2＋2x ,因此,f (g (－1))＝f (－3)＝－9－6＝－15、 答案 －15 7 解 由f (x )＝2bxax －1, f (1)＝1,得a ＝2b ＋1、 由f (x )＝2x 只有一个解,即2bxax －1＝2x ,也就是 2ax 2－2(1＋b )x ＝0(a ≠0)只有一解, ∴b ＝－1,∴a ＝－1、故f (x )＝2x x ＋1、 8解 由题意,得⎩⎪⎨⎪⎧2b －1>0，2－b >0，b －1≥f，即⎩⎪⎨⎪⎧b >12，b <2，b ≥1.∴1≤b <2、9解 (1)∵y ＝f (x )在R 上为奇函数,∴f (0)＝0、又f (4x －5)> 0,即f (4x －5)>f (0),又f (x )为增函数,∴4x －5>0,∴x >54、即不等式f (4x －5)>0的解集为⎩⎨⎧⎭⎬⎫x |x >54、(2)当x <0时,－x >0,∴f (－x )＝－x (5＋x )＋1,又f (－x )＝f (x ),∴f (x )＝－x (5＋x )＋1、∴f (x )＝⎩⎪⎨⎪⎧x－x ＋ 1 x ，－x＋x ＋ 1x数b 的取值范围是1≤b <2、。

河北武邑中学2018-2019学年高一年级上学期12月份月考英语试题满分150分本试卷分第I卷（选择题）和第II卷（非选择题）两部分。

第I卷1至7页，第II卷8至9页。

共8页。

考试时间120分钟。

第I卷（选择题，共80分）注意事项：１、答第I卷前，考生务必将自己的姓名、准考证号、考试科目、试卷类型（A）用2B 铅笔涂写在答题卡上。

２、每小题选出答案后，用2B铅笔把答题卡上对应的题目的答案标号涂黑，如需改动，用橡皮擦干净后，再选涂其它答案，不能答在试卷上。

第一部分：听力（共两节，满分30 分）第一节（共 5 小题；每小题 1.5 分，满分7.5 分）听下面 5 段对话。

每段对话后有一个小题，从题中所给的A、B、C 三个选项中选出最佳选项，并标在试卷的相应的位置。

听完每段对话后，你都有10 秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

第一节听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后，你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

第二部分阅读理解(共15小题；每小题2分，满分30分)阅读下列短文，每题所给的四个选项(A、B、C和D)中,选出最佳选项。

并在答题卡上将该选项涂黑AChester is one of the best cities in the UK. As soon as you arrive in Chester you will appreciate the city’s unique atmosphere and sense his history. Founded by the Roma ns over 2,000 years ago, much of the Roman influence remains and Chester’s city walls are the most complete in Britain. Combined with history and heritage (遗产), Chester is a lively city full of bars, pubs, clubs, hotels, and restaurants for you to discover, attracting you to visit again and again.Travelling to Chester: Chester is easily accessible by many means of transport—whether you are travelling by rail, car, bus or plane. Please check our route planner below to help you plan your journey to Chester. Once you arrive in the city there are numerous car parks; however, during rush hours the easiest way to travel is by bus.Hotel: From bed & breakfast to the luxury of Chester’s only five star hotel, Chester has all covered. Whether your trip is for business or pleasure, your room is just a click away!Sightseeing and Tours: The best way to see Chester is by a guided tour. If you join one, youstill have a variety to choose from. Whether you choose the traditional guided walk, to be guided around Chester historical landmarks by bus or to take a boat down the River Dee, you will sure enjoy the delights of Chester.21. What can we know about Chester from Paragraph 1?A. It is rich in deep culture and modern touch.B. It is the best city in the UK.C. Its city walls were completed by British people.D. It is a newly built city.22. What is the easiest way to get around Chester city centre during rush hours?A. By bicycle.B. By bus.C. By rail.D. By taxi.23. What’s the best way to visit Chester?A. Travelling by your own.B. Taking a pleasure-boat.C. Going there in rush hours.D. Joining a guided tour.BAt thirteen, I was diagnosed (诊断) with a kind of attention disorder. It made school difficult for me. When everyone else in the class was focusing on tasks, I could not.In my first literature class, Mrs. Smith asked us to read a story and then write on it, all within 45 minutes. I raised my hand right away, "Mrs. Smith, the doctor said I have attention problems. I might not be able to do it. "She glanced down at me through her glasses, "You are not different from your classmates, young man. "I tried, but I didn't finish the reading when the bell rang. I had to take it home.In the quietness of my bedroom, the story suddenly all became clear to me. It was about a blind person, Louis Braille. He lived in a time when the blind couldn't get much education. But Louis didn't give up. Instead, he invented a reading system of raised dots (点) , which opened up a whole new world of knowledge to the blind.Wasn't I the "blind" in my class, being made to learn like the '-sighted" students? My thoughts spilled out and my pen started to dance. I completed the task within 40 minutes. Indeed, I was not different from others; I just needed a quieter place. If Louis could find his way out of his problems, why should I ever give up?I didn't expect anything when I handed in my paper, so it was quite a surprise when it came back to mewith an "A" on it. At the bottom of the paper were these words : "See what you can do when you keep trying?"24. Why didn't the author finish the reading in class?A. He was new to the class.B. He was tired of literature.C. He wanted to take the task home.D. He had an attention disorder.25. What do we know about Louis Braille from the text?A. He made a great invention.B. He had good sight.C. He gave up reading.D. He learned a lot from school.26. What was Mrs. Smith's attitude to the author?A. Impatient.B. Sympathetic.C. Encouraging.D. Angry.27. What is the main idea of the text?A. A teacher can open up a new world to students.B. One can find his way out of difficulties with efforts.C. The disabled should be treated with respect.D. Everyone needs a hand when facing challenges.CMy color television has given me nothing but a headache. I was able to buy it a little over a year ago because I had my relatives give me money for my birthday instead of a lot of clothes that wouldn′t fit. I let a salesclerk fool me into buying a discontinued model. I realized this day later, when I saw newspaper advertisements for the set at seventy-five dollars less than I had paid. The set worked so beautifully when I first got it home that I would keep it on until stations signed off for the night. Fortunately, I didn′t get any channels showing all-night movies or I would never have gotten to bed.Then I started developing a problem with the set that involved static（静电）noise.For some reason,when certain shows switched into a commercial, a loud noise would sound for a few seconds.Gradually, this noise began to appear during a show, and to get rid of it, I had to change to another channel and then change it back. Sometimes this technique would not work,and I had to pick up the set and shake it to remove the sound. I actually began to build up my arm muscles(肌肉shaking my set.When neither of these methods removed the static noise, I would sit helplessly and wait for the noise to go away. At last I ended up hitting the set with my fist, and it stopped working altogether.My trip to the repair shop cost me $ 62，and the set is working well now, but I keep expecting more trouble.28.Why did the author say he was fooled into buying the TV set?A.He got an older model than he had expected.B.He couldn’t return it when it was broken.C.He could have bought it at a lower price.D.He failed to find any movie shows on it.29.Which of the following can best replace the phrase“signed off”in Paragraph 1?A.ended all their programs.B.provided fewer channelsC.changed to commercials.D.showed all-night movies30.How did the author finally get his TV set working again?A.By shaking and hitting it.B.By turning it on and off.C.By switching channels.D.By having it repaired.31.How does the author sound when telling the story?A.CuriousB.AnxiousC.CautiousD.HumorousDEveryone needs friends. We all like to feel close to someone. It is nice to have a friend to talk, laugh and do things with. Surely, there are times when we need to be alone. We don't always want people around. But we would feel lonely if we never had a friend.No two people are the same. Sometimes friends don't get along well, which doesn't mean that they no longer like each other. Most of the time they will go on being friends. Sometimes friends move away, then we feel very sad. We miss them much, but we can call them and write to them. Maybe we would never see them again, and we can make new friends. It is surprising to find out how much we like new people when we get to know them. Families sometimes name their children after a close friend. Many places are named after men and women, if they are friendly to people in a town. Some libraries are named this way. So are some schools. We think of these people when we go to these places.There's more good news for people, if they have friends. These people live longer than those people if those don't have friends. Why? It could be that they are happier. Being happy helps you stay well. Or it could be just knowing that someone cares, if someone cares about you, you take better care of yourself.33. The first paragraph tells us __________.A. none needs friendsB. making friends is the need in people's lifeC. we always need friends around usD. we need to be alone34. Which of the following is the most probable place people name after friendly people?A. A house.B. A room.C. A library.D. A village.35. If people have friends, they would live longer, because __________.A. they feel happier and healthierB. they get a lot of help from their friendsC. they take better care of themselvesD. both A and C第二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

河北省武邑中学2018-2019学年高一英语上学期寒假作业3第一节 (共15小题；每小题2分，满分30分)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，并在答题卡上将该项涂黑。

AThough beach vacations may be a great way to take your mind off work, lakes surrounded by mountains make for an even grander experience. If you are looking for some peace on your vacation, we have some recommendations for you in the Caucasus(高加索).Lake ParavaniLake Paravani, located at 6,801ft above sea level, is in the south of Georgia, near the Javakheti plateau. At this level, altitude sickness can occur and it is a good idea to be prepared to adapt to it properly, or bring medication for altitude sickness. Being a volcanic lake makes for a more interesting experience. The lake is best known for fishing. Do not come home during the winter months when the lake freezes.Lake CildirLake Cildir is located in the Ardahan province, East Turkey, near the borders of Georgia and Armenia. It is the second largest freshwater lake of Eastern Turkey, and many tourists are not aware of this beautiful attraction. Lake Cildir is surrounded by mountains of the Caucasus. The lake freezes during late November. If the winter is not extremely cold, you can try some lake activities like ice skating and ice fishing.Lake VanLake Van is the must visit of all lakes in this list. The largest lake in Turkey, Lake Van is located on the eastern shore of Turkey and is also the most accessible lake here. It’s situated at 5, 380ft above sea level, and unique to lakes around the world, the water is high in salt content.1．What is special about Lake Van?A. Its water is high in salt.B. It is a volcanic lake.C. It is globally the largest lake.D. It is surrounded by mountains. 2．What challenge are travelers most likely to face while visiting Lake Paravani?A. Lack of medicine.B. Volcano eruptions.C. Altitude sickness.D. Low temperature all the year. 3．Which destinations would be attractive to a fishing lover?A. Lake Van and Lake Paravani.B. Lake Pravani and Lake Cildir.C. Lake Cildir and Lake Van.D. Lake Van.BSome places in the world have strange laws. It’s important for you to know about them before going there.Whoever likes to chew gum(口香糖) may have to leave Singapore. The government really wants to keep the city clean and will fine you for chewing gum.Before you leave for the United Arab Emirates you’d better make sure you aren’t visiting during Ramadan(斋月). During that time you aren’t allowed to eat or drink in public. Tourists have been fined up to $275 for drinking in public.Lovers spend so much time kissing each other goodbye at train stations that trains often start late. This law--no kissing your lover goodbye at train stations-- is rather old, and isn’t in use today in France.In Thailand it’s against the law t o drive a car or motorcycle without a shirt on, no matter how hot it is. Punishments are different in different areas and can include warnings and tickets costing about $10. No joke ---the local police will stop you.Studies in Denmark have shown that cars with their headlights on are more noticeable by other drivers than those with their headlights off. Drivers there are required to leave their headlights on even during the day, or they may face a fine up to $100.Do you often buy things using coins? Don’t do it in Canada. The Currency Law of 1985 doesn’t allow using only coins to buy things. Even the use of the dollar-coin is limited (受限制的). The shop owner has the right to choose whether to take your coins or not.Make sure you know about these laws before your next trip. Better safe than sorry.4. What is mainly talked about in the text?A. How to make your trip around the world safe.B. Why there are strange laws in the world.C. Interesting places you can go to around the world.D. Some strange laws you should know about for your trip.5. If you are driving a car in Thailand, __________.A. the police will play a joke on youB. you should wear your shirt even though it’s hotC. the police will give you tickets costing about $10D. you should always keep your headlights on6. What can we learn from the text?A. The Singaporean government cares a lot about its environment.B. Kissing goodbye at train stations isn’t allowed in France today.C. Tourists in the United Arab Em irates shouldn’t eat in public.D. You can turn your headlights off in daytime in Denmark.第二节 (共5小题；每小题2分，满分10分)根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

河北省武邑中学2018-2019学年高一数学上学期寒假作业3 1．（5分）已知函数f (x )的图象是连续不断的，有如下x ，f (x )的对应值表:,则函数A ．2个 B ．3个 C ．4个D ．5个2．（5分）函数f (x )＝log 2x －1x的零点所在区间为( )A.⎝ ⎛⎭⎪⎫0，12B ．⎝ ⎛⎭⎪⎫12，1 C ．(1,2) D ．(2,3)3．（5分）已知f (x )＝3ax ＋1－2a ，设在(－1,1)上存在x 0使f (x 0)＝0，则a 的取值范围是( )A ．－1<a <15B ．a >15C ．a >15或a <－1D ．a <－14．（5分）把长为12 cm 的细铁丝截成两段，各自围成一个正三角形，那么这两个正三角形面积之和的最小值是________．5．（5分）若函数f (x )＝ax ＋b (a ≠0)有一个零点是2，那么函数g (x )＝bx 2－ax 的零点是______．6．（5分）若函数f (x )＝a x －x －a (a >0，且a ≠1)有两个零点，则实数a 的取值范围是______．7．（12分）当a 为何值时，函数y ＝7x 2－(a ＋13)x ＋a 2－a －2的一个零点在区间(0,1)上，另一个零点在区间(1,2)上？8．（12分）某公司试销一种新产品，规定试销时销售单价不低于成本单价500元/件，又不高于800元/件．经试销调查发现，销售量y(件)与销售单价x(元/件)近似满足一次函数y＝kx＋b的关系(图象如图所示)．(1)根据图象，求一次函数y＝kx＋b的表达式；(2)设公司获得的毛利润(毛利润＝销售总价－成本总价)为S元，求该公司可获得的最大毛利润，并求出此时相应的销售单价．9．（12分）已知函数f(x)＝x2－3x－10的两个零点为x1，x2(x1<x2)，设A＝{x|x≤x1，或x≥x2}，B＝{x|2m－1<x<3m＋2}，且A∩B＝∅，求实数m的取值范围．10．（12分）设函数f(x)＝ax2＋(b－8)x－a－ab的两个零点分别是－3和2.(1)求f(x)；(2)当函数f(x)的定义域是【0,1】时，求函数f(x)的值域．11．（12分）某上市股票在30天内每股的交易价格P(元)与时间t(天)组成有序数对(t，P)，点(t，P)落在图中的两条线段上；该股票在30天内的日交易量Q(万股)与时间t(天)的部分数据如下表所示:,(1)根据提供的图象，写出该种股票每股交易价格P(元)与时间t(天)所满足的函数关系式；(2)根据表中数据确定日交易量Q(万股)与时间t(天)的一次函数关系式；(3)用y表示该股票日交易额(万元)，写出y关于t的函数关系式，并求在这30天中第几天日交易额最大，最大值是多少？2018-2019学年高一寒假作业第3期答案1. 解析:,根据函数零点存在性定理可判断至少有3个零点．答案:,B2. 解析:,因f (2)＝log 22－12＝1－12＝12>0，f (1)＝log 21－1＝－1<0，故f (x )的零点在区间(1,2)内．故选C. 答案:,C3. 解析:,∵f (x )是x 的一次函数，∴f (－1)·f (1)<0⇒a >15或a <－1.答案:,C4. 解析:,设一个正三角形的边长为x ，则另一个正三角形的边长为12－3x3＝4－x ，两个正三角形的面积和为S ＝34x 2＋34(4－x )2＝32【(x －2)2＋4】(0＜x ＜4)．当x ＝2时，S min ＝23(cm 2)． 答案:,2 3 cm 25. 解析:,由2a ＋b ＝0，得b ＝－2a ，g (x )＝bx 2－ax ＝－2ax 2－ax ，令g (x )＝0，得x ＝0或x ＝－12，∴g (x )＝bx 2－ax 的零点为0，－12.答案:,0，－126. 解析:,函数f (x )的零点的个数就是函数y ＝a x 与函数y ＝x ＋a 的图象的交点的个数，如下图，a >1时，两函数图象有两个交点，0<a <1时，两函数图象有唯一交点，故a>1.答案:,(1，＋∞)7. 解:,已知函数对应的方程为7x 2－(a ＋13)x ＋a 2－a －2＝0，函数的大致图象如图所示．根据方程的根与函数的零点的关系，方程的根一个在(0,1)上，另一个在(1,2)上，则:,⎪⎩⎪⎨⎧><>0)2(0)1(0)0(f f f ，即⎩⎪⎨⎪⎧a 2－a －2＞0，a 2－2a －8＜0，a 2－3a ＞0，解得⎩⎪⎨⎪⎧a ＜－1或a ＞2，－2＜a ＜4，a ＜0或a ＞3，∴－2＜a ＜－1或3＜a ＜4.8. 解:,(1)由图可知所求函数图象过点(600,400)，(700,300)，得⎩⎪⎨⎪⎧400＝k ×600＋b 300＝k ×700＋b ，解得⎩⎪⎨⎪⎧k ＝－1b ＝1 000，所以y ＝－x ＋1 000(500≤x ≤800)．(2)由(1)可知S ＝xy －500y ＝(－x ＋1 000)(x －500)＝－x 2＋1 500x －500 000＝－(x －750)2＋62 500(500≤x ≤800)，故当x ＝750时，S max ＝62 500.即销售单件为750元/件时，该公司可获得最大毛利润为62 500元．9. 解:,A ＝{x |x ≤－2，或x ≥5}．要使A ∩B ＝∅，必有⎩⎪⎨⎪⎧2m －1≥－2，3m ＋2≤5，3m ＋2>2m －1，或3m ＋2≤2m －1，解得⎩⎪⎨⎪⎧m ≥－12，m ≤1，m >－3，或m ≤－3，即－12≤m ≤1，或m ≤－3.所以m 的取值范围为⎩⎪⎨⎪⎧⎭⎪⎬⎪⎫m ⎪⎪⎪－12≤m ≤1或m ≤－3.10.解:,(1)∵f (x )的两个零点是－3和2，∴函数图象过点(－3,0)、(2,0)． ∴有9a －3(b －8)－a －ab ＝0， ① 4a ＋2(b －8)－a －ab ＝0， ②①－②得b ＝a ＋8.③③代入②得4a ＋2a －a －a (a ＋8)＝0，即a 2＋3a ＝0. ∵a ≠0，∴a ＝－3.∴b ＝a ＋8＝5. ∴f (x )＝－3x 2－3x ＋18.(2)由(1)得f (x )＝－3x 2－3x ＋18＝－3⎝⎛⎭⎪⎫x ＋122＋34＋18，图象的对称轴方程是x ＝－12.又0≤x ≤1， ∴f min (x )＝f (1)＝12，f max (x )＝f (0)＝18.∴函数f (x )的值域是【12,18】．11.解:,(1)由图象知，前20天满足的是递增的直线方程，且过两点(0,2)，(20,6)，容易求得直线方程为P ＝15t ＋2；从20天到30天满足递减的直线方程，且过两点(20,6)，(30,5)，求得方程为P ＝－110t ＋8，故P (元)与时间t (天)所满足的函数关系式为:,P ＝⎩⎪⎨⎪⎧15t ＋2，0≤t ≤20，t ∈N，－110t ＋8，20＜t ≤30，t ∈N.(2)由图表，易知Q 与t 满足一次函数关系，即Q ＝－t ＋40,0≤t ≤30，t ∈N. (3)由以上两问，可知y ＝⎩⎪⎨⎪⎧ ⎝ ⎛⎭⎪⎫15t ＋2－t ＋，0≤t ≤20，t ∈N ⎝ ⎛⎭⎪⎫－110t ＋8－t ＋，20＜t ≤30，t ∈N＝⎩⎪⎨⎪⎧－15t －2＋125，0≤t ≤20，t ∈N，110t －2－40，20＜t ≤30，t ∈N.当0≤t ≤20，t ＝15时，y max ＝125， 当20≤t ≤30，y 随t 的增大而减小．∴在30天中的第15天，日交易额的最大值为125万元．。