初2014级2012—2013学年度下期期末综合能力训练（二） 数 学 试 卷 （全卷共五个大题，满分150分，考试时间120分钟）
一、选择题（每小题4分，共48分） 1．下列运算正确的是（ ） A ．
y
x y y
x y --
=-- B ．
3
232=
++y
x y x
C ．y x y
x y x +=++22 D ．
y
x y x x y -=
-+12
2
2．下列调查中，适宜采用抽样调查方式的是（ ） A ．调查我市中学生每天体育锻炼的时间 B ．调查某班学生对“五个重庆”的知晓率 C ．调查一架“歼20”隐形战机各零部件的质量
D ．调查广州亚运会100米决赛参赛运动员兴奋剂的使用情况 3．将方程2
410x x ++=配方后得到的形式是（ ）
A ．()2
23x += B ．()2
43x += C ．()2
43x +=- D ．()2
25x +=- 4．下列因式分解中，结果正确的是（ ）
A ．(
)
2
322
2824m n n n m n
-=- B ．()()()2
1213x x x --=--
C ．()()2
5632y y y y --=-+ D ．()2
2
693ax ax a a x -+=-
5. 若a b >，且c 为有理数，则下列各式正确的是（ ） A ．ac bc >
B ．ac bc <
C ．2
2
ac bc <
D ．22
ac bc ≥
6．不解方程，判断方程
0131
21
12
=-+
+-
-x
x x 的解是（ ）
A 0
B 1
C 2
D 3 7．若△ABC ∽△A ′B ′C ′，∠A=40°，∠C=110°，则∠B ′等于（ ） A ．30° B ．50°
C ．40°
D ．70°
8．如图：在△ABC 中，DE ∥AC ， 则DE ：AC=（ ） A ．8：3 B ．3：8 C ．8：5 D ．5：8
9．A 、B 两地相距48千米，一艘轮船从A 地顺流航行至B 地，又立即从B 地逆流返回A 地，共用去9小时，已知水流速度为4千米/时，若设该轮船在静水中的速度为x 千米/时，则可列方程（ ） A 、
94
484
48=-+
+x x B 、
9448448=-+
+x
x
C
9448=+x
D
94
964
96=-+
+x x
10. 2013年4月20日08时02分在四川雅安芦山县发生7.0级地震，人民生命财产遭受重大损失．某部队接到上级命令，乘车前往灾区救援，前进一段路程后，由于道路受阻，车辆无法通行，通过短暂休整后决定步行前往．则能反映部队与灾区的距离s （千米）与时间t
（小时）之间函数关系的大致图
A
B
C
D
E
（8题图）
象是（ ）
11．用边长相等的黑色正三角形与白色正六边形镶嵌图案，按图①②③所示的规律依次下去，则第
10个图案中，所包含的黑色正三角形是（ ）
① ② ③
A ．36
B ．38
C ．40 12．如图，在直角坐标系中，有菱形OABC ，A 点的坐标为（10，0），双曲线x
k y =
（0>x ）经过C 点，且OB ·AC ＝160，则k 的值
为（ ）
A ．40
B ．48
C ．64
D ．8 二、填空题（每小题4分，共24分） 13．若分式
1
21
-x 有意义，则x 的取值范围是 。
14．分解因式：32
2x x x -+= ．
15．关于x 的方程042
=+-mx x 有两个相等实根，则m = ． 16．如图，在A 时测得某树的影长为4米，B 时又测得该树的影长为9米，
若两次日照的光线互相垂直，则树的高度为 米． 17．若关于x 的方程
1
11
61
2+=
--
-x x x k 有增根,则k = ．
18.采购员用一张1万元的支票去购物，购单价为590元的A 种物品若干件，又购单价为670元的B 种物
品若干件，其中B 的件数多于A 的件数，找回了几张100元和几张10元的钞票，（10元的张数不超过9张），如果把购A 种物品和B 种物品的件数互换，找回的100元和10元的钞票张数也恰好相反，则原来购B 种物品为 件。 三、解答题（每小题7分，共14分） 19．解下列方程：2
44170x x +-=
A 时
B 时
16题图
20．如图，在平面直角坐标系中，△ABC的三个顶点的坐标分别为A（0，1），B（– 1，1），C（– 1，3）．
(1) 画出△ABC关于x轴对称的△A1B1C1；
(2) 画出△ABC以O为位似中心，位似比为1：2的位似△A2B2C2；
(3) C1的坐标为，C2的坐标为，
四、解答题（本大题4个小题，每小题10分，共40分）解答时每小题必须给出必要的演
算过程或推理步骤．
21．先化简，再求值：
2
2
1221
1
211
x x x
x
x x x
--
??
-÷--
?
+-+
??
，其中0
1
2=
-
+x
x．
22．某蔬菜店第一次用800元购进某种蔬菜，由于销售状况良好，该店又用1400元第二次购进该品种蔬菜，所购数量是第一次购进数量的2倍，但进货价每千克少了0.5元．
（1）第一次所购该蔬菜的进货价是每千克多少元？
（2）蔬菜店在销售中，如果两次售价均相同，第一次购进的蔬菜有3% 的损耗，第二次购进的蔬菜有5% 的损耗，若该蔬菜店售完这些蔬菜获利不低于1244元，则该蔬菜每千克售价至少为多少元？
23．某校九年级为了解学生课堂发言情况，随机抽取该年级部分学生，对他们某天在课堂上发言的次数进行了统计，其结果如下表，并绘制了如图所示的两幅不完整的统计图，已知B 、E 两组发言的人数比为
10:3，请结合图中相关数据回答下列问题：
(1) A 组有 人，C 组有 人，E 组有 人，并补全直方图； (2) 该年级共有学生600人，请估计全年级在这天发言次数不少于20的人数；
(3) 已知A 组发言的学生中恰有一位女生，E 组发言的学生中恰有两位男生，现从A 组与E 组中分别．．
抽一位学生写报告，求所抽的两位学生至多有一位男生的概率．
24．已知，矩形ABCD 中，延长BC 至E ，使BE = BD ，F 为DE 的中点，连结AF 、CF ．
(1) 若AB = 3，AD = 4，求CF 的长； (2) 求证：∠ADB = 2∠DAF ．
五、解答题：（每题12分，共24分） 25. 如图，已知点A(2，4)在反比例函数(0)k y x x
=>的图象S 1上，将双曲线S 1沿y 轴翻折后得到的是
反比例函数k y x
=-
的图象S 2，直线AB 交y 轴于点B(0，3)，交x 轴于点C ，P 为线段BC 上的一个动点
（点P 与B 、C 不重合），过P 作x 轴的垂线与双曲线S 2在第二象限相交于点E ． (1)求双曲线S 2和直线AB 的解析式．
(2)设点P 的横坐标为m ，线段PE 的长为h ，求h 与m 之间的函数关系，并写出自变量m 的取值范围． (3)在线段BC 上是否存在点P ，使得P 、E 、A 为顶点的三角形与BOC ?相似？
若存在，请求出点P 的坐标；若不存在，请说明理由.
A B
26．如图，在直角梯形ABCD 中，AD ∥BC ，90B ∠=?， 6AD =， 8BC =
，AB =点M 是BC
的中点．点P 从点M 出发沿MB 以每秒1个单位长的速度向点B 匀速运动，到达点B 后立刻以原速度沿BM 返回；点Q 从点M 出发以每秒1个单位长的速度在射线MC 上匀速运动．在点P 、Q 的运动过程中，以PQ 为边作等边三角形EPQ ，使它与梯形ABCD 在射线BC 的同侧．点P 、Q 同时出发，当点P 返回到点M 时停止运动，点Q 也随之停止．设点P 、Q 运动的时间是t 秒（0t >）． （1）设PQ 的长为y ，在点P 从点M 向点B 运动的过程中，写出y 与t 之间的函数关系式（不必写t 的取值范围）；
（2）当 1BP =时，求EPQ △与梯形ABCD 重叠部分的面积；
（3）随着时间t 的变化，线段AD 会有一部分被EPQ △覆盖，被覆盖线段的长度在某个时刻会达到最大值，请回答：该最大值能否持续一个时段？若能，直接写出t 的取值范围；若不能，请说明理由．
A
B
解：（1）y = 2t ；（2）当BP = 1时，有两种情形：
①如图6，若点P 从点M 向点B 运动，有 MB = BC 2
1
= 4，MP = MQ = 3，∴PQ = 6．连接EM ，
∵△EPQ 是等边三角形，∴EM ⊥PQ ．∴33=EM ． ∵AB = 33，∴点E 在AD 上．
∴△EPQ 与梯形ABCD 重叠部分就是△EPQ ，其面积为39．
②若点P 从点B 向点M 运动，由题意得 5=t ．PQ = BM + M Q -BP = 8，PC = 7．
设PE 与AD 交于点F ，Q E 与AD 或AD 的延长线交于点G ，过点P 作PH ⊥AD 于点H ，则
HP = 33，AH = 1．在Rt △HPF 中，∠HPF = 30°，
∴HF = 3，PF = 6．∴FG = FE = 2．又∵FD = 2，∴点G 与点D 重合，
7．此时△EPQ 与梯形ABCD 的重叠部分就是梯形FPCG ，其面积为
32
27．
（3）能．4≤t ≤5．
图7
图6
2013年12月大学英语四级听力真题 PartⅡListening Comprehension(30 minutes) Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer. Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre. 1. A) The woman is now working in a kindergarten. B) The man will soon start a business of his own. C) The man would like to be a high school teacher. D) The woman is going to major in child education. 2. A) The furniture has to be rearranged. B) The sound equipment has to be set up. C) The conference room has to be cleaned. D) The video machine has to be checked. 3. A) She is exhausted. B) She is near-sighted. C) She cannot finish work in time. D) She cannot go straight home. 4. A) The woman is too particular about food. B) He would rather have a meal an hour later. C) The woman should order her food quickly. D) He usually prefers ice-cream to sandwiches. 5. A) He is not a good mechanic. B) He doesn't keep his promises. C) He spends his spare time doing repairs. D) He is always ready to offer help to others. 6. A) Sam has a big family to support. B) Sam is not interested in traveling. C) The pay offered by the travel agency is too low. D) The work hours in the travel agency arc too long 7. A) International trade.
石泉县职业教育中心2013年上学期期中考试卷 适用年级： 13春机电班、电子班 科目：电工基础 考试范围： 第五章 命题人： 王春举 同科审核人： 教研组长： 一、填空题、作图题、计算题请在试卷上作答 二、 选择题答题卡 三、判断题答题卡 一、填空题（每空1分，共36分）。 （1）磁感线的方向：在磁体外部由 指向 ； 在磁体内部由 指向 。 （2）如果在磁场中每一点的磁感应强度大小 ，方向 ，这种磁场叫做匀强磁场。在匀强磁场中，磁感线是一组 。 （3）描述磁场的四个主要物理量是 、 、 和 它们的符号分别是 、 、 和 ；它们的国际单位分别是 、 、 和 。 （4）磁场间相互作用的规律是同名磁极相互 ，异名磁极相互 。 （5）载流导线与磁场平行时，导线所受磁场力为 ；载流导线与磁场垂直时，导线所受磁场力为 F= 。 （6）、左手定则的内容：伸开左手，使大拇指与其余四指垂直，并且都与手掌在一个平面内，让 垂直进入手心，并使四指指 向 ，这时手掌所在的平面与磁感线和导线所在的平面垂直， 大拇指所指的方向就是通电导线在磁场中 的方向。 （7）磁导率μ是用来表示媒介质 的物理量。任一媒介 质的磁导率与真空磁导率的比值叫做相对磁导率，即μr = （8）磁场强度的计算公式为 （9）磁感应强度B 是描述磁场 的物理量，磁感应强度B 的单位为 （10）磁场和电场一样，是一种______,具有_________和________的性质. （11）对于通电直导线，用右手握住导线，让伸直的大拇指指 向 ，那么弯曲的四指指向 的方向。 二 选择题（每题2分，共20分。将答案写在答题卡上。） 1. 判断通电导线或通电线圈产生磁场的方向用（ ） A 右手定则 B 右手螺旋法则 C 左手定则 D 楞次定律 2. 下列与磁导率无关的物理量是（ ） A 磁感应强度 B 磁通 C 磁场强度 D 磁阻 3 .如图1所示，直线电流与通电矩形圈同在纸面内，线框所受磁场力方向为（ ）
2010年12月英语四级听力原文完整版 Section A 短对话(11~18) 11. M: Oh my god! The heat is simply unbearable here. I wish we’ve gone to the beach instead. W: Well, with the museums and restaurants in Washin gton I’ll be happy here no matter what the temperature. Q：What does the woman mean? 12. M: How’s the new job going? W: Well, I’m learning a lot of new things, but I wish the director would give me some feedback. Q：What does the woman want to know? 13. M: Can you help me work out a physical training program John? W: Sure, but whatever you do be careful not to overdo it. Last time I had two weeks’ worth of weight-lifting in three days and I hurt myself. Q: What does the man suggest the woman do? 14. M: I have an elderly mother and I’m worried about her going on a plane. Is there any risk? W: Not if her heart is all right. If she has a heart condition, I’d recommend against it. Q: What does the man want to know about his mother? 15. M: Why didn’t you stop when we first signaled you at the crossroads? W: Sorry, I was just a bit absent-minded. Anyway, do I have to pay a fine? Q: what do we learn from the conversation? 16.
华一2013年秋季初三期中考试卷 一. 单选 ( )26. I don’t know when he ______ .When he ____ here, I’ll call you in a minute. A. will come; will arrive B. comes; arrives C. will come; arrives D. comes; will arrive ( )27. He is famous rather _______ an actor than _____ his songs A. as; for B. for; as C. for, for D. as, as ( )28. ---Can you understand me ? ---Sorry, I can _____ understand you. A. hardly B. almost C. nearly D. ever ( )29. It was _______ exciting news that all of us couldn’t help_________ . A. so an, crying B. such, crying C. so, to cry D. such an ,crying ( )30. Mr. Green is a football fan .He __________ football . A. used to playing B. is used to play C. used to play D. uses to play ( )31. We always try to get away from the ____ and heat of the city for a month or two each summer. A. shout B. noise C. voice D. sound ( )32. ---Are your parents coming to attend your birthday party ? ---Oh, ______ of them is.______ of them are still staying in Shanghai. A. neither; Both B. both; Neither C. none; All D. all; None ( )33.---Have you ever met Jack ________ ? ---No, he _________ goes out because he is still weak from a long illness . A. usually; recently B. recently; always C. exactly; hardly D. lately; seldom ( )34. ---Don’t you think it _______ for us to do morning exercises? ----Yeah, doing morning exercise can build our bodies and keep us fit. A. difficult B. strange C. necessary D. popular ( )35.----Don’t you think that the Internet is closely connected with our daily life ? ----Yes, of course .Can you ________ a life without it in the future? A. consider B. imagine C. mention D. expect ( )36. Mrs. Yang always ____ us to speak English as much as we can ,so all of us ____ a good oral English now . A. allows; keep B. makes; hold C. forces; own D. encourages; have ( )37.---How about Alice’s performance ? ---Wonderful! Her voice _________ so sweet. A. sounds B. listens C. tastes D. smells ( )38.---Have you ______ your driving test yet ? ---No, but whenever I want to _____ ,my wife always suggests that I should go on with it . A. had; run away B. passed; give up C. got; put off D. taken; get down ( )39. These words can’t be learned by heart in a moment ,and we should _______ them constantly. A. compare B. repeat C. practice D. produce ( )40. Don’t expect me to explain the sentence to you _______ you really don’t understand. A. until B. unless C. though D. since 二．完形填空 In the dining room of my grandfather's house stood a large clock .When I was a child, the clock interested me very much . I was surprised at how the clock would strike three times .six times or more, with a nice clear __41__ . I often paid attention to it instead of the foods when I had __42__ .And always the clock stood like an old family friend,__43__ the family . I found the clock comforting and familiar .Year after year ,the clock became a part of my memories. It was even more __44__ to me when my grandfather carefully wound up that clock with a special key each day .That key was __45__ to me .It kept the clock __46__ .How did it do that ? I watched as my grandfather took the key from his pocket and opened the door in the old clock and used the key to wind it up .He never let that clock wind down and __47__ When I got a little older ,he told me how to open the door ,and let me wind up the clock myself . I remember the ___48__ time I did, I felt so excited. After my grandfather __49__, every time I saw the clock ,I couldn’t help crying .Never could I see him again .The __50__ on the clock were frozen .It stopped .I took the key with my __51__
2012年12月四级听力真题原文 11. W: I just heard about a really beautiful park in the east end of the town. There are a lot of roses in bloom. M: Why don’t we walk over there and see for ourselves? Q: What will the speakers probably do? 12. M: My presentation is scheduled for 9:30 tomorrow morning at the lecture hall. I hope to see you there. W: Oh, sorry. I was about to tell you that I have an appointment with my dentist at 9:00 o’clock tomorrow. Q: What do we learn about the woman? 13. W: How long have you been running this company? M: Twenty years if you can believe that. I brought it from a small operation to what it is today. Q: What do we learn about the man? 14. M: Have you read the news on the campus net? Susan has won the scholarship for next year. W: I knew she would from the very beginning. Such a brilliant and diligent girl! She certainly deserves it.
一、填空题（每题2分，共20分） 1、如果将盈余5万元记作+5万元，那么亏损10万元应记作 万元． 2、-2的相反数是 ， 2 3 的倒数是 . 3、|-5|= ,-（-6）= . 4、比较大小：0 2-，3- π-． 5、3 2()5 = ,2013(1)-= . 6、小王在网上购买了一些同样的书，每本书12元，一共支付了66元，其中邮费为6元，设小王买了x 本这样的书，可得方程 ；商家为了促销，决定10本以上包邮（买家不用支付邮费）,如果小王买了m （m >10）本这样的书，则需支付 元（用含m 的代数式表示）. 7、用24米长的篱笆围成长方形的生物园饲养小兔，如果生物园的一边长为a 米，那么生物园的面积为 （用含a 的代数式表示） 8、根据如下图所示的程序计算，若输入x 的值为2-，则输出的值为 . 9、观察下面的一列单项式：2x -、22x 、23x 、24x -、25x 、26x 、2 7x -…，根据其中的规律，得出的第2012个单项式是 . 10、如果七（1）班有a 位男同学，有b 位女同学， ,请在横线上填上一段话，表示代数式34a b a b ++的实际意义. 二、选择题（每题3分，共15分） 11、镇江市约310万人口，用科学记数法表示这个数为 （ ） A ． 310×104 B ． 31×105 C ．3.1×105 D ．3.1×106 12、下列各题中的两项是同类项的是 （ ） A ．2 2ab 与2 a b - B ．3xy 与22x y C ．2x 与 2 y D ．3与-5 13、我国古代，有2种常见的长度单位，“丈”和“尺”，1丈=10尺，在商代，1尺约为16.95cm ，如果以这个标准，标准篮球场的篮筐高度大约为 （ ） A ．1丈 B. 2丈 C. 3丈 D. 10丈 14、下列方程是一元一次方程的是 （ ） A .x y +=20 B.x -=2 10 C. x --=3105 D. x >32 15、已知a 为有理数，则下列四个数中一定为正有理数的是 （ ）
大学英语六级考试(CET6) 2012年12月听力真题 听力原文 Part III Listening Comprehension Section A 11. M: I’d like to go camping with you this weekend, but I don’t have a sleeping bag. W: No problem. You can count on me to get one for you. My family has tons of camping gear. Q: What does the woman mean? 12. M: I know I promise to drive you to the airport next Thursday, but I’m afraid something has come up. They’ve called a special meeting at work. W: No big deal. Karen said she was available as a back-up. Q: What does the woman mean? 13. W: Have you saved enough money for a trip to Hawaii? M: Not even close. My uncle must put the brakes on my travelling plans. Q: What does the man mean? 14. M: I’m starving. Do we still have any pie left from the dinner yesterday? W: Oh, Julia invited her friends over in the afternoon and they ate it all. Q: What do we learn from the conversation? 15. W: Three letters of recommendation are required to apply to graduate schools. I was wondering if the one professor Smith wrote for me last year could still be used. M: It’s a bit dated. You’d better submit a recent one. Q: What does the man suggest the woman do?16. W: I’ve noticed that you spend a lot of time tending your garden. Would you like to join our gardening club? We meet every other Wednesday. M: Oh, thanks for the invitation, but this is how I relax. I’d rather not make it something formal and structured. Q: What can we infer about the man? 17. M: I heard the recent sculpture exhibit was kind of disappointing. W: That’s right. I guess a lot of other people feel the way I do about modern art. Q: What does the woman mean? 18. M: Bob is running for chairman of the student union. Would you vote for him? W: Oh, I can’t decide right now because I have to find out more about the other candidates. Q: What does the woman mean?
Section A 11. M: I’d like to go camping with you this weekend, but I don’t have a sleeping bag. W: No problem. You can count on me to get one for you. My family has tons of camping gear. Q: What does the woman mean? 12. M: I know I promise to drive yo u to the airport next Thursday, but I’m afraid something has come up. They’ve called a special meeting at work. W: No big deal. Karen said she was available as a back-up. Q: What does the woman mean? 13. M: Have you saved enough money for a trip to Hawaii? W: Not even close. My uncle must put the brakes on my travelling plans. Q: What does the man mean? 14. M: I’m starving. Do we still have any pie left from the dinner yesterday? W: Oh, Julia invited her friends over in the afternoon and they ate it all. Q: What do we learn from the conversation? 15. W: Three letters of recommendation are required to apply to graduate schools. I was wondering if the one Professor Smith wrote for me last year could still be used. M: It’s a bit dated. You’d be tter submit a recent one. Q: What does the man suggest the woman do? 16. M: I’ve noticed that you spend a lot of time tending your garden. Would you like to join our gardening club? We meet every other Wednesday. W: Oh, thanks for the invitation, but this is how I relax. I’d rather not make it something formal and structured. Q: What can we infer about the man? 17. W: I heard the recent sculpture exhibit was kind of disappointing. M: That’s right. I guess a lot of other people feel the way I do about modern art. Q: What does the woman mean? 18. W: Bob is running for chairman of the student union. Would you vote for him? M: Oh, I can’t decide right now because I have to find out more about the other candidates. Q: What does the woman mean? N ow you’ll hear two long conversions Conversation One W: I don’t know what to do. I can’t seem to get anyone in the hospital to listen to my complaints and this outdated equipment is dangerous. Just look at it. M: Hmm, uh, are you trying to say that it presents a health hazard? W: Yes, I am. The head technician in the lab tried to persuade the hospital administration to replace it, but they are trying to cut costs. M: You are pregnant, aren’t you? W: Yes, I am. I made an effort to get my supervisor to transfer me to another department, but he urged me not to complain too loudly, because the administration is more likely to replace me than the X-ray equipment. I’m afraid to refuse to work, b ut I’m more afraid to expose my unborn child to the radiation. M: I see what you mean. Well, as your union representative, I have to warn you that it would take quite a while to force management to replace the old machines and attempt to get you transferred may or may not be successful. W: Oh, what am I supposed to do then? M: Workers have the legal right to refuse certain unsafe work assignments under two federal laws: the Occupational Safety and Health Act and the National Labor Relations Act. But the requirements of either of the Acts may be difficult to meet. W: Do you think I have a good case?
2020年12月英语四级听力真题原文完整版（文都教 育版） 2020年12月英语四级听力真题原文完整版（文都教育版） Part 1 短对话 Question 1 - M： Do you remember the wonderful film on space exploration we watched together last month？ - W： Sure。It’s actually the most impressive one I’ve seen on that topic。 Q：What do we learn about the speakers？ A) They admire the courage of space explorers. B) They enjoyed the movie on space exploration. C) They were going to watch a wonderful movie. D) They like doing scientific exploration very much. Question 2 - W： Are you looking for anything in particular？ - M： Yes. My son is graduating from high school， and I want to get him something special. Q：Where does the conversation most probably take place？ A) At a gift shop. B) At a graduation ceremony.
2012—2013学年第一学期期中教学质量检测三年级语文试卷(70分钟) 命题：廖巧玲学校＿＿＿＿＿班级＿＿＿＿＿姓名＿＿＿＿＿评分＿＿＿＿＿ 一积累?运用(58分) 1.读拼音，写词语。(10分) xiōnɡpúmòfánɡshìyàn tuīcèjiāojuán ( ) ( ) ( ) ( ) ( ) 2.比一比,再组词.(10分) 辫( ) 忆( ) 俄( ) 精( ) 坪( ) 瓣( ) 亿( ) 饿( ) 睛( ) 评( ) 3.抄写下面的诗句,书写要工整、规范。(3分) 露从今夜白,月是故乡明。 4、照样子写词语。(6分) 亮晶晶＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿ 来来往往＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿＿5、在括号里填上合适的词语。(6分) 认真地( ) 悄悄地( ) 一( )翅膀 黄黄的( ) 美丽的( ) 一( )窗 6、把下列句子补充完整。(5分) 路人借问遥招手, ＿＿＿＿＿＿＿＿＿＿＿。 ＿＿＿＿＿＿＿＿＿＿＿, 天才在于积累。 三月韭菜长得旺, ＿＿＿＿＿＿＿＿＿＿。 山花对＿＿＿＿＿, ＿＿＿＿＿＿对云横。 1
7、选择恰当的词语或关联词填空。（8分） 察觉观察考察 ①我们要养成留心（）周围事物的好习惯。 ②李四光专门（）了家乡的一块巨石，终于弄明白了它的来历。 如果……就……除了……还有…… ①他发现，( )我们平时看到的世界，( )一个平时看不到的世界。 ②( )蜜源离蜂箱不到一百米，它们( )在蜂巢上方跳“圆舞”。 8、按要求改写句子。(4分) ①大石头把草地砸一个很深的大坑。（改写成“被”字句） ②课室被我打扫干净了。(改写成“把”字句) ③用“勇敢”写一句话： 8、默写古诗《九月九日忆山东兄弟》。(6分) 二阅读(2０分) (一)我能根据学过的知识填空。(5分) 1、学习了《花钟》后,我知道了一天之内,不同的花( )是不同的。 2、秋天的雨,带给大地的是一曲( ),带给小朋友的是一首( )。 3、我发现“杏黄”、“橙黄”、“鹅黄”这几个词表示“黄”的程度（），我还能写出另一个有关“黄”色的词（）。 1
2019年12月英语四级听力真题原文【完整版】 News 1 A device that weighs less than one kilogram is part of a mission that will allow scientists to deliver fourth generation or 4G mobile coverage to the moon in 2019。 If successful， the tiny device will provide the moon with its first ever mobile phone network。 The lunar network will support high definition streaming of video and data between the moon and earth。 The network is part of a mission to the moon。 This is a project with the goal of landing the first privately paid for mission to the moon。 The 4G mission is set to launch from Cape Canaveral in the United States on a space X Falcon 9 rocket in 2019。 Mission to the moon intends to establish and test the first elements of a communications network on the moon。 The scientists working on the project opted to build a 4G rather than a fifth generation or 5G network。 This is because fifth generation networks are still in testing and trial phases。 This means that a 5G network may not yet be stable enough to work on the moon‘s surface Question 1：What are scientists planning to do? Question 2：Why did scientists choose to set up a 4G network in their mission? News 2 It‘s responded to a fire Wednesday night at an abandoned mall in Heywood。 The fire was reported at 9：26 pm at an old shopping center on Michigan Avenue near St。 Mary’s Church。 Six fire engines， two trucks and two chiefs
大学物理期中测试(第7章-第9章) 一、 选择题(每题3分，共27分) 1 真空中两块互相平行的无限大均匀带电平面。其电荷密度分别为 +σ 和 +2σ，两板之间的距离为 d 。两板间的电场强度和电势差为 ( D ) (A ) 0，0； (B )023εσ， d 023εσ ； (C )0εσ，d 0εσ ； (D )02εσ， d 02εσ。 2 半径为R 的均匀带电圆面，若轴线上有两点 P 1， P 2它们到环心的距离分别是R 和2R 。则点P 1的电场强度E 1与点P 2的电场强度E 1的关系为 ( B ) (A )()()21552281 E E +-=； (B )()() 2155222 1 E E +-=； (C )214E E =； (D )212E E =。 3 若将负点电荷 q 从电场E 中的点 a 移至点 b ，下 列正确者是 ( A ) (A ) 电场力做负功； (B ) 电场强度b a E E <； (C ) 电势能减少； (D ) 电势b a ??< 。 4 极板面积为S ，间距为 d 的平行板电容器，接入电 源，保持电压 U 恒定，此时若把间距拉开为2d ，则 电容器中的静电能改变了 ( C ) (A )202U d S ε ； (B )204U d S ε； (C )204U d S ε-； (D )202U d S ε-。 5 平行板电容器充电后仍与电源连接，若将极板间距拉大，则极板上的电量 Q ，电场强度 E 和电场能量 W e 将作 ( D ) 变化 (A ) Q 增大，E 增大，W e 增大； (B ) Q 减小，E 减小，W e 减小； (C ) Q 增大，E 减小，W e 增大； (D ) Q 减小，E 增大，W e 增大。 6 一个平行板电容器没有介质时的电容d S C 00ε= ，今在两极板间平行插入面积为S ，厚 度为 a (d a <)，相对介电系数为2=r ε的介质后的电容值为 ( C ) (A )a d S -0ε； (B )a d S -20ε；
听力原文： 11.W: I just heard about a really beautiful park in the east end of the town. There are a lot of roses in bloom. M: Why don’t we walk over there and see for ourselves? Q: What will the speakers probably do? 12.M: My presentation is scheduled for 9:30 tomorrow morning at the lecture hall. I hope to see you there. W: Oh, sorry. I was about to tell you that I have an appointment with my dentist at 9:00 o’clock tomorrow. Q: What do we learn about the woman? 13.W: How long have you been running this company? M: Twenty years if you can believe that. I brought it from a small operation to what it is today. Q: What do we learn about the man? 14.M: Have you read the news on the campus net? Susan has won the scholarship for next year. W: I knew she would from the very beginning. Such a brilliant and diligent girl! She certainly deserves it. Q: What does the woman mean? 15.W: Taking a bus to Miami, it’s cheaper than going by train. M: That’s true. But I’d rather pay a little more for the added comfort and convenie nce. Q: What does the man mean? 16.M: I think it’s time we got rid of all this old furniture. W: Y ou’re right. We need to promote our image besides it’s not a real antique. Q: What do the speakers mean? 17.M: That was some storm yesterday. How was I afraid I couldn’t make it home. W: Y eah, most of the roads to my house were flooded. I didn’t get home from the lab until midnight. Q: What do we learn from the conversation? 18.W: My boys are always complaining that they’re bored. M: Why don’t you get them into some team sports? My son and daughter play soccer every Saturday. And they both look forward to it all week. Q: What does the man mean? Conversation 1 W: So John, I hear you and Arthur share a job, don’t you? M: Y es. We’ve shared a sales job at Sonatech f or about two years now. W: Well, how do you divide up your schedule? M: Y ou know we are both sales representatives, and we take orders over the phone. When we started job sharing it was difficult, because we both worked all day Monday. I worked Tuesday and Thursday and Arthur worked Wednesday and Friday. The problem was that when I was in the office on Tuesday. I would talk to people, then they would call back on Wednesday with a question. But Arthur couldn’t answer the question and he couldn’t ask me about it because I wasn’t in the office. So he had to ask the people to call me back the next day, Thursday. Of course, they didn’t like to wait until the next day to have their questions answered. W: Yes, that sounds like a problem. M: So, finally we decided that Arthur would work in the mornings and I would work in the