周五限时练(四)
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2018年七年级数学下册第四周周末限时训练题一:填空题每题3分1、如图, AB∥CD , 直线EF分别交AB、CD于点E、F,EG平分BEF,1=70,则2=___________. AA B A 1 B D E2 3 FC D C 4 D C1 2B(第1题) (第2题) (第4题)2、如图,已知:AB∥CD,1:2=2:7,则3=_____4=_____.3、在△ABC中,AB=BC=5㎝,则AC边的取值范围是______________.4、如图,(1)ADC是△_______的外角,则ADC=____+(2)EFC是△_______的外角,则EFC=____+____.5、在△ABC中,C=25,A=10,则B=__________.6、若一个多边形的每一个外角都等于72,则这个多边形是__________边形,它共有_______条对角线.7、如图,2,则____∥___ _,BAD+___________=180.8、多边形的边数每增加两条,其内角和就增加__________,外角和是______9、如图,1=25,2=30,A=50,则BDC=______________.10、如图,△ABC中,ACB=90,CDAB,垂足为D.(1)B=__________;( )(2)线段CD是△ABC的_____,图中共有_____个直角三角形;分别是_________________________.(3)在△ABC中,BC边所对的角是______,在△BCD中,BC边所对的角是_______,在△ ADC中,DC边上的高是__________.(4)_______,_______.11、若两个角的两边分别平行,且其中一个角是另一个角的2倍少30,则这两个角分别为12、已知A、B、C是△ABC的三个内角,=B,C+A,=C,则、、中,锐角最多有__________个.13. 四边形的四个内角中,直角最多有个,钝角最多有个,锐角最多有个.14. 一个多边形的内角和等于1260,则这个多边形是边形。
人教版(2019)高一上册物理必修第一册-同步培优复习训练-十五题限时练习(四)共:15题共:75分钟一、单选题1.以10 m/s的初速度从地面竖直上抛一石子,该石子两次经过小树顶端的时间间隔为1.2 s,则小树高约为(忽略空气阻力,重力加速度g取10 m/s2)()A. 1.2 mB. 2.4 mC. 3.2 mD. 4.2 m2.利用速度传感器与计算机结合,可以自动作出物体运动的位移时间图像,某同学在一次实验中得到的运动小车的s-t图像如图所示,在0~15s的时间内()A. 小车先做加速运动,后做减速运动B. 小车做曲线运动C. 小车运动的平均速度为0D. 小车的位移约为8m3.甲.乙两物体在t=0 时刻经过同一位置沿x 轴运动,其v—t 图象如图所示,则()A. 甲、乙在t=0 到t=1s 之间沿同一方向运动B. 乙在t=0 到t=7s 之间的位移为零C. 甲在t=0 到t=4s 之间做往复运动D. 甲、乙在t=6s 时的加速度方向相反4.如图所示,一辆轿车和一辆卡车在同一平直的公路上相向匀速直线运动,速度大小均为30 m/s。
为了会车安全,两车车头距离为100 m 时,同时开始减速,轿车和卡车的加速度大小分别为 5 m/s2和10 m/s2,两车减到速度为20 m/s 时,又保持匀速直线运动,轿车车身全长 5 m,卡车车身全长15m,则两车的错车时间为()A. 0.3 sB. 0.4 sC. 0.5 sD. 0.6 s5.如图所示,是一个半径为R的中国古代八卦图,中央S部分是两个半圆,练功人从A点出发沿实线进行走完整个八卦图(不能重复),在最后又到达A点。
求在整个过程中,此人两次经过A点的所经过的最小路程和最大位移分别为()A. 0,0B. 2R,2RC. (3π+2)R,2RD. (π+2)R,2R6.如图所示,A、B两物体(可视为质点)相距,物体A以的速度向右匀速运动;而物体B此时的速度,只在摩擦力作用下向右做匀减速运动,加速度大小为。
金陵中学河西分校八(上)英语限时训练(四)一、选择填空(每小题1分,共15分)1. — What did you and your friends buy in the shop this afternoon?— ________. ________ of us had money for anything.A. Nothing; NoneB. None; No oneC. Nothing; NobodyD. None; Nothing2. — Listen! What's the noise outside?— It________ be some children playing football. But I'm not quite sure.A. mayB. mustC. shouldD. would3. — Could you please ________ here? There are many kids playing here.— Sorry, I didn't know that.A. to smokeB. not to smokeC. smokeD. not smoke4. My parents agreed ________ me ________ at home alone when they were away.A. to let; to stayB. letting; stayC. to let; stayD. letting; to stay5. The boy is so smart that he can ________ many difficult maths problems correctly.A. put outB. cut outC. work outD. give out6. —How is Susan now?— I hear a famous company her with a job, but she refused it.A. preventedB. offeredC. providedD. introduced7. — Not all people coming here are real bird lovers.— Yeah. Some try to make the place a better area ________ others just bring trouble.A. soB. becauseC. whileD. moreover8. — Is Jack good at singing?— Yes, we can often hear him ________ in the classroom.A. singB. singsC. to singD. singing9. Spring Bud Project is an organization that raises money ________ poor young girls return to school.A. helpingB. to helpC. invitingD. to inviteA. on; atB. on; inC. at; onD. at; in11. It snowed heavily last night. Grandpa made a snowman ________ the children in the morning.A. surpriseB. surprisedC. to surpriseD. surprising12. Our teacher often tells us ________ when we have trouble ________ a problem.A. to give up; solvingB. not to give up; working outC. to give up; to work outD. not to give up; to solve13. As is known to all, about seventy-five ________ of the earth ________ covered with water.A. per cent; areB. per cent; isC. per cents; areD. per cents; is14. He spoke loudly ________ everyone in the room ________ him clearly.A. to make; to hearB. to make; hearC. making; to hearD. making; hear15. ________ animals will be in danger and there will be space for them if we don't take any action.A. More and more; fewer and fewerB. Fewer and fewer; more and moreC. More and more; less and lessD. Less and less; more and more二、完形填空Many people live with animals. Some have dogs and cats. Some have fish. Dian Fossey was different from them. She had gorillas. The gorillas didn't live in her house. She lived in ___16___. What a special woman she was!Dian Fossey was born in San Francisco, California, in 1932. She loved ___17___. She went to college to become a veterinarian(兽医). One day, she took a trip to Africa. ___18___ she was there, she became interested in gorillas. Dian loved watching the gorillas. She decided to move there.Dian Fossey was known as the first person to have19contact(接触) with gorillas. She sat with the gorillas. She played with them. They never ___20___ her.Dian became interested in a baby gorilla. She was able to ___21___ him. She named him Digit. Dian was able to watch him grow. Digit liked Dian, too. A few years later, Digit was killed by hunters. Dian was very ___22___ about Digit's death. She decided to do something to ___23___ the gorillas.She started a ___24___ that tried to protect the gorillas. National Geographic wrote a story about Dian and her group. Many people ___25___ money to her to help save the gorillas. She said she would do more things to save gorillas.16. A. hers B. his C. theirs D. ours17. A. bird B. animals C. forests D. plants18. A. Although B. Because C.While D. Unless19. A. friendly B. strict C. serious D. careful20. A. win B. beat C. protect D. hurt21. A. stay away from B. get close to C. look out for D. catch up with22. A. pleased B. sad C. bored D. proud23. A. protect B. kill C. lose D. miss24. A. team B. group C. club D. center25. A.stole B. wrote C. sent D. received三、阅读理解(每小题1分,共5分)(A)Wetlands are any land that is flooded with shallow water all or most of the time. They are a natural water holding system.There are many types of wetlands. Among them, bogs, marshes and swamps are the three n types. The different types of wetlands have different kinds of plants. Only mosses (苔藓) and a few other kinds of plants can grow in bogs. Grassy plants like cattails(香蒲) and reeds (芦苇) are the most common plants in a marsh. A swamp is a forest whose ground is underwater all or most of the time. Unlike bogs or marshes, a swamp is full of trees and bushes. It's not a good idea to go exploring a swamp without a guide. There are hidden pools of water, thick mud, and sometimes big crocodiles looking for their next meal.Hungry crocodiles aren't the only animals that make the wetlands their home. Otters, turtles, frogs, snakes and many other animals do too. The water is home to many kinds of fish and crabs. Birds, including ducks, geese and cranes, use wetlands seasonally during their long migrations.Wetlands are important because they provide habitats for plants and animals. A wetland system can also protect shorelines, make polluted waters clean, prevent floods, and restore underground water supplies.According to WWF, more than half of the world's wetlands have disappeared since the beginning of the 20th century. If this continues, countless plant and animal species will surely die- out. Without wetlands, cities have to spend more money treating water. Don't feel helpless. Try to do your part to protect them right now. Here are some ideas.26. According to the passage, which of the following is TRUE?A. Wetlands are a man-made water holding system.B. There are three types of wetlands in the world.C. People cannot meet with big crocodiles in wetlands.D. Wetlands can protect shorelines and prevent floods.27. What is the writer probably going to talk about after Paragraph 5?A.What are the different types of wetlands?B. What will happen if wetlands disappear?C. What actions can people take to protect wetlands?D. What other kinds of plants and animals live in wetlands?(B)Some of the greatest problems we face today are the destruction(破坏) of our environment. Brown clouds, polluted water, endangered wild animals... these problems seem so huge.So my family do what we can. We take cloth bags to stores instead of using plastic bags. We walk where we don't have to drive ...But does it do any good? When I am the only one in line at the market with cloth bags, am I doing any good? Does my walking to stores make any real difference to the world?I recently learned something about flamingos(火烈鸟) which like to get together in groups of a thousand or more. Every year, when the time comes for migration, a few of them first take off from the lake. But none of the others seem to notice, so the small group returns. However, the next day they try again. This time a few more fly along with them, but most of them still pay no attention, so they return again. They try for several times. Every time a few more birds join in but, since the thousands of others still take no notice, the great migration plan is once more stopped.Then one day something changes. The same small group of birds once again starts flying and a small number more join in just as before, then more. Finally, they all take flight and the migration really begins. What a spectacular(壮观的) sight it must be -thousands of flamingos taking off into the sky at once!A few can make a difference. Even if you're the one to take the first step, and continue trying, others will someday take notice and together we will solve even our greatest problems.28. Why does the small group of flamingos return to the lake?A. Because they are very tired.B. Because they can't find food in other places.C. Because they don't know where to go.D. Because the others don't fly along with them.29. What’s the writer's purpose of writing this article?A. To show that the writer loves to see the migration of flamingos.B. To introduce how flamingos migrate to readers.C. To tell readers to continue trying and it can make a difference.D. To show that we face lots of serious problems today.30. Where would you most probably read this passage?A. A guidebook.B. A movie poster.C. A personal blog (博客).D. A science magazine.四、词汇(每小题2分,共30分)(A)根据汉语提示、音标或首字母提示写单词,使句意完整31. They finally___________ (卖) their house at a good price.32. I invited Tom to dinner and he happily___________(接受) my invitation.33. The man can't sleep well at night and it leads to___________ / ˈsɪəriəs/ problems to his health.34. Don't take p___________ him. He is pretending(假装) to be poor.35. Don't be too strict with yourself. After all, none of us is___________(完美的).36. Our_____(政府) is taking some action to improve people's living conditions.37. My teacher asked me to___________(描述) this picture with my own words.38. The students come from different places. Do you know all their ___________(地址)?(B)用所给词的适当形式填空39. We don't need to hurry because there is still a little time ___________(leave).40. My grandfather likes sleeping with the windows___________(close) in summer.41. The film is very interesting and I lost myself in it from___________(begin) to end.42. He treats everyone with ___________(kind), so he has lots of friends.43. --Is John in his bedroom now? --Yes. He may___________(make) his bed.44. The doctor did everything he could___________(save) the child who was hurt in the accident.45. A nurse took her arm and___________(lead) her to a chair.五、句型转换,每空一词。
卜人入州八九几市潮王学校萧山2021届高三语文周测四限时训练考试时间是是:15分钟一、语言文字运用〔一共12分,其中选择题每一小题3分〕1、以下两组加点的字读音完全一样的一项为哪一项哪一项〔3分〕2、以下句子中,有错别字的一项为哪一项哪一项〔3分〕“能吞能吐〞的绿色之肺恢复安康,改善生态环境,抑制全球变暖,减少热浪、飓风、洪涝及干旱等自然灾害,大力植树造林,使每一座荒山都绿起来。
B.科学家追求真理,提醒万物的真相及其运动变化规律。
真正的科学家都懂得:真理是简单的,而且越是深层次、适用范围越是普遍的真理就越简单。
简单、深入、普遍三位一体,这就是科学之源泉。
C.生命又像一棵小树,他从地底聚集起很多生力,在冰雪下欠身,在早春润湿的泥土中英勇快乐地破壳出来。
D.其实这些身不由己的条件就不应该被列为人生的普遍条件。
因为它的偶尔性就如我们生成的天生丽质,还是歪瓜裂枣都与自己无关,有关的只是我们能创造和利用的条件。
3、以下成语使用正确的一项为哪一项哪一项〔3分〕A.今年我国频频发生重大事故,对于马航失联、地震、“桑得姆〞台风等事件,真可谓五风十雨。
B.对于爱吃的吃货来说,美食是必不可少的,一眨眼的功夫他们就把美食风卷残云,让人大开眼界,实为佩服。
登堂入室窃取别人钱财,对于这个事故,要积极加大小区的防范意识,确保住户的平安。
D.近日,已经公布体育将被视为升学、毕业参考的重要根据,增加体育的课量,就说明要更加引起对学生安康运动的重视,而有些同学却不以为然。
4、以下各项中,没有语病的一项为哪一项哪一项〔3分〕A.澳大利亚IMCOA咨询公司介绍说,中国稀土在当时全世界的份额到达90%,随着各国的开发进程,这一份额会逐渐降低,但即便在2021年,中国稀土份额仍能占到80%,“中国的场支配地位不会动摇〞。
B.基于良渚文化玉器在中华玉开展史上的辉煌地位,选择其中最具代表性与原创性的玉腙、玉璧和玉三叉型器三中器类,将其组合在一起,作为“中华玉〞代表器型,以昭示“礼、德、和〞的中华传统文化内核。
限时训练(四)答案部分一、选择题题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 ADACCDBBBDAD二、填空题13. {}7,9 14. 14-15. []1,1- 16.11,,A B D 解析部分1.解析 由()2i 12i i 2i 2i -=-=+,复数对应的点在第一象限.故选A .2. 解析 因为{}n a 是等比数列,所以()()*10n na q q n a +=≠∈N , 则369,,a a a 成等比数列. 故选D . 3. 解析 对于选项A :πcos 2sin 22y x x ⎛⎫=+=- ⎪⎝⎭, 函数的最小正周期为π且图像关于原点对称; 对于选项B :πsin 2cos22y x x ⎛⎫=+= ⎪⎝⎭, 函数的最小正周期为π且图像关于y 轴对称; 对于选项C :πsin 2cos224y x x x ⎛⎫=+=+ ⎪⎝⎭,函数的最小正周期为π,但其图像不关于原点对称; 对于选项D :πsin cos 4y x x x ⎛⎫=+=+ ⎪⎝⎭,函数的最小正周期为2π,且图像不关于原点对称.故选A .4. 解析 由()23-⊥a b c ,且(),3k =a ,()1,4=b ,()2,1c =, 得()22360k --=,解得3k =.故选C.5. 解析 程序框图的执行过程如下:1,9s k ==;9,810s k ==;988,710910s k =⨯==;877,610810s k =⨯==,循环结束.故可填入的条件为710s >.故选C. 6. 解析 p 是真命题,q 为假命题,故p ⌝为假命题,q ⌝为真命题. 从而p q ∧为假,p q ⌝∧⌝为假,p q ⌝∧为假,p q ∧⌝为真.故选D.7. 解析 该几何体的直观图如图所示,易知该几何体的表面积是由两个直角三角形,两个直角梯形和一个矩形组成的. 则其表面积()()25525411343535602222S +⨯+⨯=⨯⨯+⨯⨯+++⨯=.故选B.8. 解析 设1PF m =,2PF n =,依题意不妨设0m n >>.于是3294m n b m n a mn ab⎧⎪+=⎪-=⎨⎪⎪=⎩,所以9432m n m nmn +-=⋅⋅, 得3m n =或13m n =-(舍).所以a n =,43b n =,53c n =,故53c e a ==.故选B. 9. 解析 先不考虑小品类节目是否相邻,保证歌舞类节目不相邻的排法共有3334A A 144=(种),再剔除小品类节目相邻的情况,共有322322A A A 24⋅⋅=(种),于是符合题意的排法共有14424120-=(种).故选B.10. 解析 依题意,抛物线()220y px p =>的准线方程为2x =-,所以22p-=-,得4p =,因此抛物线的方程为28y x =. 设过点()2,3A -的直线方程为()32y k x -=+,联立直线方程与抛物线方程,得()2328y k x y x⎧-=+⎪⎨=⎪⎩, 消x 建立关于y 的一元二次方程得2328y y k ⎛⎫-=+ ⎪⎝⎭, 即2816240ky y k -++=,()64416240k k ∆=-+=, 得22320k k +-=,解得12k =或2-(舍). 因此直线与抛物线相切于点()8,8B ,则直线BF 的斜率43k =.故选D. 11. 解析 在ABC △中,由πA B C ++=, 得πA C B +=-,πA B C +=-,则()()1sin 2sin sin 2A ABC C A B +-+=--+, 可变形为()()1sin 2sin π2sin π2A B C C +-=--+⎡⎤⎣⎦, 即1sin 2sin 2sin 22A B C ++=. ()()1sin 2sin 2sin 22sin cos 2sin cos 2A B C A B A B C C ++=+-+=⇒()()12sin cos cos 2C A B A B --+=⎡⎤⎣⎦, 即14sin sin sin 2A B C =,得1sin sin sin 8A B C =,又[]2211sin 2sin sin sin 1,222244ABCc abc R S ab C ab R A B C R R ==⋅===∈△, 故248R,得R ⎡∈⎣.所以338sin sin sin abc R A B C R ⎡==∈⎣,知C ,D 均不正确.()38bc b c abc R +>= ,故A 正确.故选A.12.解析 设()()e21xg x x =-,()h x ax a =-,可转化成存在唯一的整数0x ,使得()()g x h x <.因为()()'e21xg x x =+,所以当12x <-时,()'0g x <,()g x 在1,2⎛⎫-∞- ⎪⎝⎭上单调递减;当12x >-时,()'0g x >,()g x 在1,2⎛⎫-+∞ ⎪⎝⎭上单调递增. 因为当0x =时,()01g =-,()01h a =->-,所以()()00g h <. 又因为存在唯一的整数0x ,使得()()g x h x <,所以()()()()1111g h g h ⎧⎪⎨--⎪⎩ ,即e 032ea ⎧⎪⎨--⎪⎩ ,解得32e a . 又因为1a <,所以312ea < .故选D .13. 解析 {}4,6,7,9,10U A = ,(){}{}{}4,6,7,9,101,3,5,7,97,9U A B == . 14. 解析 ()()2log 2f x x =+=()221log 22log 2x x += ()222log log x x +.令2log t x =∈R ,则2,y t t t =+∈R ,函数的最小值为14-.因此函数的最小值为14-.15. 解析 解法一:依题意,若圆22:1O x y +=上存在点N ,使得45OMN ∠=,如图所示.因为OMN OMN '∠∠ ,所以45OMN '∠ ,因此sin ON OMN OM ''∠=1OM得OM 2012x + ,解得011x - .所以0x 的取值范围是[]1,1-.y=e x解法二:在OMN △中,由45OMN ∠=,据正弦定理得sin 45sin ON OMONM=∠,即sin sin 45ONMOM ONM ∠==∠.又()0,135ONM ∠∈,所以0OM <,,解得011x - .所以的取值范围是[]1,1-.16. 解析 依题意,平面DEP 可能经过正方体的顶点是1A ,1B ,D .因为平面1A DE 与直线1BD 相交,平面1B DE 与直线1BD 相交.且1//BD 平面1C DE.。
2021年高二下学期限时训练04 Word版含答案班级姓名学号成绩1.(本小题满分14分)已知,命题,命题.⑴若命题为真命题,求实数的取值范围;⑵若命题为真命题,命题为假命题,求实数的取值范围.2.(本小题满分14分)已知函数的最小正周期为.⑴求函数的对称轴方程;⑵设,,求的值.3.(本小题满分16分)设函数.(1)当时,求函数的极大值;(2)若函数的图象与函数的图象有三个不同的交点,求的取值范围;订正反订正反思:(3)设,当时,求函数的单调减区间.15.(本小题满分14分)已知,命题,命题.⑴若命题为真命题,求实数的取值范围;⑵若命题为真命题,命题为假命题,求实数的取值范围.【知识点】复合命题的真假;命题的真假判断与应用.【答案解析】⑴⑵或.解析:解:⑴因为命题,令,根据题意,只要时,即可,……4分也就是;……7分⑵由⑴可知,当命题p 为真命题时,, 命题q 为真命题时,,解得 ……11分因为命题为真命题,命题为假命题,所以命题p 与命题q 一真一假, 当命题p 为真,命题q 为假时,, 当命题p 为假,命题q 为真时,,综上:或. ……14分 【思路点拨】(1)由于命题,令,只要时,即可; (2)由(1)可知,当命题p 为真命题时,,命题q 为真命题时,,解得a 的取值范围.由于命题“p ∨q”为真命题,命题“p ∧q”为假命题,可知:命题p 与命题q 必然一真一假,解出即可. 16.(本小题满分14分)已知函数的最小正周期为. ⑴求函数的对称轴方程; ⑵设,,求的值.【知识点】函数y=Asin (ωx+φ)的图象变换;两角和与差的余弦函数. 【答案解析】⑴⑵解析 :解:⑴由条件可知,, ……4分则由为所求对称轴方程; ……7分 ⑵56334(5)cos()sin ,cos352555f ππαααα+=-⇔+=-⇔==, 因为,所以,,因为,所以 … …11分4831513cos()cos cos sin sin 51751785αβαβαβ+=-=⨯-⨯=-. ……14分【思路点拨】(1)由周期求得,由,求得对称轴方程.(2)由,, ,可得sinα 的值,可得cosα的值.由,求得cosβ的值,可得sinβ 的值,从而求得 cos (α+β)=cosαcosβ﹣sinαsinβ 的值. 20.(本小题满分16分) 设函数.(1)当时,求函数的极大值;(2)若函数的图象与函数的图象有三个不同的交点,求的取值范围; (3)设,当时,求函数的单调减区间.【知识点】利用导数求极值;借助导数求范围;利用导数求单调区间. 【答案解析】(1)极大值为5.(2);(3)①当时,函数的单调减区间为;②当时,函数的单调减区间为,; ③当时,函数的单调减区间为,, .解析 :解:(1)当时,由=0,得或, ………2分 列表如下:所以当时,函数取得极-1 3 + 0 - 0 +递增极大递减极小递增大值为5. ………4分(2)由,得,即,………6分令,则,列表,得1-0 +0 -递减极小值递增极大值2递减………8分由题意知,方程有三个不同的根,故的取值范围是. ………10分(3)因为,所以当时,在R上单调递增;当时,的两根为,且,所以此时在上递增,在上递减,在上递增;………12分令,得,或(),当时,方程()无实根或有相等实根;当时,方程()有两根,………13分从而①当时,函数的单调减区间为;………14分②当时,函数的单调减区间为,;……15分③当时,函数的单调减区间为,, .………16分【思路点拨】(1)当时,求出原函数的导数,找到极值点列表求出极大值;(2)原式变型为,令,然后通过列表找到a的取值范围;(3)对a进行分类讨论即可.X 32141 7D8D 綍36690 8F52 轒30355 7693 皓%= 28569 6F99 澙>o25443 6363 捣I。
湖北省襄阳36中学校2013-2014学年度高一语文期末限时练(四)(教师版)1.下列词语中加点的字读音全都正确的一组是()A. 敕(chì)造猿猱(náo )暮砧(zhēn)翘(qiáo)首以盼B. 渚(zhǔ)清鱼凫(fú)吮(yǔn)血模棱(léng)两可C. 两靥(yàn)巉(chán)岩陈抟(tuán)少不更(gēng)事D. 蹙缩(cù)朔(sù)漠桌帏(wéi)数(shuò)见不鲜答案及解析:1.AB吮shun C两靥(ye)D朔漠(shuo)2.下列词语中加点的字,每对读音都不相同的一组是()A.忖度./度.量嫡.亲/贬谪.肖.像/生肖.B.厌恶./可恶.监.生/监.测恫吓./吓.唬C.炮.火/炮.烙腼.腆/沉湎.漱.盂/咳嗽.D.应和./和.面栅.栏/珊.瑚惊诧./叱.咤答案及解析:2.DA(duo/du di/zhe xiao)B(wu jian/jian he/xia)C(pao/pao mian shu/sou)D(he/huo zha/shan cha/zha)3.下列加点字的注音全都不相同的一组是A. 巍.峨\马嵬.贫瘠.\脊.椎显赫.\沟壑.果核.\形骸.B. 梦魇.\俨.然囊.括\曩.昔琴弦.\旋.转炮.烙\刨.食C. 绾.髻\手腕.塑.料\朔.漠敕.造\赦.免赤裸.\脚踝.D. 宫绦.\洗涤.徇.私\殉.葬咀.嚼\狙.击孝悌.\涕.泪答案及解析:3.C (A wēi wéi jí jĭhèhé hái B yăn náng năng xián xuán páo C wăn wàn sùshuòchì shèluŏhuái D tāo dí xùn jǔjū tì )4.下列加点字读音完全正确的一项是()A.遒劲.(jìng) 压轴.(zhïu) 色彩斑斓.(lán) 殒身不恤.(xù)B.即兴.(xìng) 夹.袄(jiā) 越陌度阡.(qiān) 敷衍塞.(sè)责C.潜.(qián)力惘.(wǎng)然改弦.(xián)更张危如累.(lěi)卵D.荸荠.(qí) 鲭.(jīng)鲨渚.(zhǔ)清沙白力能扛.(gāng)鼎答案及解析:4.CA.轴zhîuB.夹jiá D.鲭qīng5.下列词语中,没有..错别字的一组是()A.厮混两魇寒暄烟霭B.尘芥告诫鬼秘脚趾C.嬉闹鞭笞战栗不肖子孙D.宵柝补偿心慰茫无际涯答案及解析:5.C (A.靥B.诡D.欣)6.下列各组词语中,没有错别字的一组是A.惫懒杜撰孛荠寒喧放诞无礼B.纨袴谬种驯熟膏梁比权量力C.天堑錾银踱步厮混沸反盈天D.钝响歆享目炫踝节传道受业答案及解析:6.C (A.喧—暄 B.梁—粱 D.炫—眩)7.下列词语书写错别字最少的一项是A. 秸杆头柱香仗义直言司马青衫风马牛不相及B. 稿暴初生犊聒不知耻契而不舍不废吹灰之力C. 鞭答核威摄义愤填膺一畴莫展天机不可泄露D. 慰藉副产品金壁辉煌地崩山催毕其功于一役答案及解析:7.D (A.秸秆、头炷香、仗义执言B槁暴、恬不知耻、锲而不舍、不费吹灰之力 C鞭笞、核威慑、一筹莫展 D金碧辉煌、地崩山摧)8.下列各组词语中没有错别字的一项是()A.精典凑和开诚布公胯下之辱B.蜕变蹒跚皮开肉绽惴惴不安C.缘故寥廓以身作责披星带月D.荸荠婉惜走投无路人烟阜盛答案及解析:8.B(A.经典凑合C.以身作则披星戴月D.惋惜)9.下列依次填入横线的词语,语意最恰当的一项是( )女作家叶广芩回北京过年的时候,按老理儿____了七大姑八大姨、老哥和老姐。
周五限时练
编制:刘慧敏 张静静 审核人:王成科 使用时间:2014-12-12
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.满足条件{1,2,3}⊂≠M ⊂≠{1,2,3,4,5,6}的集合M 的个数是 ( )
A. 8
B. 7
C. 6
D. 5
2.若集合}|{},21|{a x x B x x A ≤=<<=,且Φ≠B A ,则实数a 的集合( ) A }2|{<a a B }1|{≥a a
C }1|{>a a
D }21|{≤≤a a
3.函数f (x )在区间(-2,3)上是增函数,则y =f (x +5)的递增区间是 ( )
A .(3,8)
B .(-7,-2)
C .(-2,3)
D .(0,5)
4. 函数c x x y ++=42,则 ( )
A )2()1(-<<f c f
B )2()1(->>f c f
C )2()1(->>f f c
D )1()2(f f c <-<
5.函数)2()(||)(x x x g x x f -==和的递增区间依次是 ( )
A .]1,(],0,(-∞-∞
B .),1[],0,(+∞-∞
C .]1,(),,0[-∞+∞
D ),1[),,0[+∞+∞ 6.已知2log 3=a ,那么6log 28log 33-用a 表示为 ( )
A 2-a
B 25-a
C 2)(3a a a +-
D 132
--a a
7.已知10<<a ,0log log <<n m a a ,则 ( )
A m n <<1
B n m <<1
C 1<<n m
D 1<<m n
8.有以下四个结论 ① l g(l g10)=0 ② l g(l n e )=0 ③若10=l g x ,则x=10 ④ 若e =ln x,则
x =e 2, 其中正确的是 ( )
A. ① ③
B.② ④
C. ① ②
D. ③ ④
9.
)
10.函数x x f 4log )(=与x x f 4)(=的图象 ( )
A 关于x 轴对称
B 关于y 轴对称
C 关于原点对称
D 关于直线x y =对称
11.已知函数y f x =+()1定义域是[]-23,,则y f x =-()21的定义域是 ( )
A.[]05
2, B.[]-14, C.[]-55, D.[]-37,
12.已知定义域为R 的函数f (x )在区间(-∞,5)上单调递减,对任意实数t ,都有f (5+t ) =f (5-t ),那么下列式子一定成立的是 ( )
A .f (-1)<f (9)<f (13)
B .f (13)<f (9)<f (-1)
C .f (9)<f (-1)<f (13)
D .f (13)<f (-1)<f (9)
二、填空题:本大题共5小题,每小题4分,共16分,把答案填在答题卷的横线上。
13.已知集合}33|{≤≤-=x x U ,}11|{<<-=x x M ,}20|{<<=x x N C U 那么集合=N ,=⋂)(N C M U ,=⋃N M .
14.函数)x 2x (log y 22
1-=的单调递减区间是_______________.
15.若2log 2,log 3,m n a a m n a +===
16. 设 a ,b ,c 是空间中的三条直线,以下四种说法:
①若a ⊥b ,b ⊥c ,则a ∥c ;
②若a ,b 是异面直线,b ,c 是异面直线,则a ,c 也是异面直线;
③若a 和b 相交,b 和c 相交,则a 和c 也相交;
④若a 和b 共面,b 和c 共面,则a 和c 也共面.
正确的个数是_________个,
A B D
三、解答题:本大题共2小题,满分24分,解答应写出文字说明、证明过程或演算步骤
17.已知[]2,1,4329)(-∈+⨯-=x x f x x
(1)设[]2,1,3-∈=x t x ,求t 的最大值与最小值;
(2)求)(x f 的最大值与最小值;
18. 已知四边形ABCD 为矩形,P A ⊥平面ABCD ,点 M ,N 分别是AB ,PC 的中点. 求证:MN ∥平面P AD ;
附加题: 已知函数()31log (1)1x f x m mx
-=≠-是奇函数。
(1)求函数()y f x =的解析式;
(2)设()11x g x mx
-=
-,用函数单调性的定义证明:函数()y g x =在区间(1,1)-上单调递减;
(3)解不等式(3)0f t +<。