贵州省安顺市西秀区旧州中学2015-2016学年高二下学期第一次月考试题（全科）.zip

1旧州中学 2015—2016 学年高二年级第一次月考数学（理）试卷一、选择题：（本大题共 12 小题，每小题 5 分，共 60 分.）1．曲线 在点 处的切线方程为（ ） ．3xy)8,2(A． B． C． D．1616xy108xy32xy2. 顶点在原点，且过点 的抛物线 的标准方程是(4,)A. B. 24yx24C.或 D . 或2yxy24xy2.3.椭圆 21xmy的焦点在 y 轴上，长轴长是短轴长的两倍，则 m 的值为 （ ） A． 14B． 2 C． 2 D．4 4.已知向量 与向量)5,32(a平行,则 x,y 的值分别是（ ）)4(bA．6 和-10 B．–6 和 10 C．–6 和-10 D．6 和 105．已知函数 的图象与 轴有三个不同交点 ， ，且dcxbaxf23)( x)0,(1x,2在 ， 时取得极值，则 的值为（ ）f121A．4 B．5 C．6 D．不确定6. 若平面 的法向量为 ，平面 的法向量为 ，则平面 与 夹角的余1(3,2)n2(,01)n弦是A . B. C. D. －7014707047107.在正方体 中， 是棱 的中点，则 与 所成角的余弦值为1BCDAE1AB1DEA． B． C． D． 5100558. 已知椭 圆 ，若其长轴在 轴上.焦距为 ，则 等于 221xymy4mA. . B. . C. . D. .45789.已知 M（-2,0）,N（2,0）,|PM|-|PN|=4,则动 点 P 的轨迹是（ ）A．双曲线 B．双曲线左支 C．一条射线 D．双曲线右支210．在 上的可导函数 ，当 取得极大值，当 取得Rcbxaxf 213)( )1,0()2,1(x极小值，则 的取值范围是（ ）．12abA． B． C． D．),4()1,()4,2()2,(11. 积分 （ ）．adx2A． B． C． D．12a2a2a12. 双曲线 （ ， ）的左、右焦点分别是 ，过 作倾斜角为 的直21xyab0b12F， 130线交双曲线右支于 点，若 垂直于 轴，则双曲线的离心率为M2FxA． B． C． D．653二、填空题：（20 分.）13．已知向量 ， ， 且 ，则 = .(0,1)a(4,10)b||29ab014. 已知椭圆 ，直线 AB 过点 P（2，－1），且与椭圆交于 A、B 两点，若直线 AB 的246xy斜率是 ，则 的值为 .1AB15．一点沿直线运动，如果由始点起经过 秒后的位移是 ，那么速度为零的t 23451ttS时刻是_______________。16. _______________.)21(lim22 nnn三、解答题：70 分17.（10 分）已知向量 ，若函数 在区间 上是增函数，),1(),(2txbxabaxf)()1,(求 的取值范围。t18（12 分）已知函数 321()fxbxa， 2x是 )(f的一个极值点． （1）求 ()fx的单调递增区间； （2）若当 [, ]时， ()3f恒成立，求 a的取值范围3NMABDCO19（10 分已知椭圆的顶点与双曲线 的焦点重合，它们的离心率之和为 ，若椭圆的焦214yx135点在 轴上，求椭圆的方程 .x20.（12 分）设 ，求函数 的最大值和最小值。ax0 xxf 24683)(3421．已知椭圆 的焦距为 ，椭圆 上任意一点到椭圆两个焦点的距)0(1:2bayxC62C离之和为 6．（Ⅰ）求椭圆 的方程；（Ⅱ）设直线 与椭圆 交于 两点，点 （0，1），且 = ，求直线 的方l:kxyCBA,PAPBl程．22. （本小题满分 15 分）如图，在四棱锥 中，底OABCD面 是边长为 1 的菱形， , ABCD44, , 为 的中点， 为 的中点，以 A 为原点，建立适当的空间OABCD平2OAMNBC坐标系，利用空间向量解答以下问题：（Ⅰ）证明：直线 ；N平‖（Ⅱ）求异面直线 AB 与 MD 所成角的大小； （Ⅲ）求点 B 到平面 OCD 的距离1旧州中学高二年级第一次月考数学（文）试卷1、已知全集 集合 则A、{1，3，4} B、{3，4} C、{3} D、{4} 2、若 则复数 x＋yi 的模是A.2 B. 3 C .4 D.53.抛物线 y2 ＝4x 的焦点到直线 2xy＝0 的距离是A.2 3 B、2 C.3D、14下列大小关系正确的是5，若某几何体的三视图如图所示，则它的体积是 （ ）6、某店一个月的收人和支出总共记录 N个数据 其中收人记为正数．支出记为负数．该店用下边的程序框图目算月总收人 S和月净盈利 V，那么在图中空白的判断框和处理框中，应分别填入下列四个选项中的A. A＞0？．V＝S 一 TB．A＜0？ ，V＝S 一 TC. A＞0？，V＝S 十 T D．A＜0?，V= S＋T7、在锐角△ABC 中，角 A，B 所对的边长分别为 a，b，若则角 A等于28、已知点 A(－1，1 )，B(1,0),C(－2, －1)，D(1,1)，则向量 方向上的投影9.将函数 的图象向左平移 a（a＞0）个单位长度后，所得到的函数g（x）是偶函数，则 a的一个可能取值是10、变量 x，y 满足条件 且 z＝5y－x 最大值为 a，最小值为 b，则 a＋b 值为A、8 B、一 8 C．16 D. 2411、F 1，F 2是曲线 的左右焦点，过左焦点 Fl的直线 l与双曲线 C的左，右两支分别交于 A，B 两点，若 ， 则双曲线的离心率是12.设 f（x）是定义在 R上的增函数，且对于任意的 x都有 f（1－x） + f（1 十 x）＝0 恒成立，如果实数 m，n 满足不等式组那么 m2＋n 2的取值范围是A.（3，7） B、 （9,25） C、 （13,49） D、 （9,49）13．若 为奇函数，则实数 m＝＿＿＿＿．14、若曲线 y = kx＋Inx 在 点（1,f（1） ）处的切线平行于 x轴，则 k＝＿＿＿＿．15、球 O的球面上有四点 S,A,B,C,其中 O,A,B,C四点共面,△ABC 是边长为 2的正三角形，平面 SAB⊥平面 ABC，则棱锥 S-ABC的体积的最大值为＿＿＿316、数列 满足 设则 f(3）＝＿＿＿17.（本小题满分 12分）在等比数列（I）求数列 的通项公式；（II）设 数列 的前 n项和为18． （本小题满分 12分）为调查某次考试数学的成绩，随机抽取某中学甲、乙两班各十名同学，获得成绩数据的茎叶图如图（单位：分） ．（I）求甲班十名学生成绩的中位数；若甲班十名学生成绩的平均分和乙班十名学生成绩的平均分分别记为 ，试计算为 的值；（1 1）若定义成绩大于等于 120分为“优秀成绩” ，现从甲、乙两班样本数据的“优秀成绩”中分别抽取一人，求被抽取的甲班学生 成绩高于乙班的概率．19、 （本小题满分 12分）在直三棱柱 ABC-A1B1C1中，底面△ABC 为等腰直角三有形，∠ABC = 90 0, D为 棱 BB1中点．(I）求证：面 DA1 C⊥面 AA1 C1 C； （II）设 AB＝BC＝AA 1＝2，求 B1到平面 A1DC的距离。 20.（本小题满分 12分）4设椭圆 的左、有焦点分别是 F1、 F2，下顶点为 A,线段 OA的中点为 B( O为坐标原点） ，如图，若抛物线 C2：y=x 2－1 与 Y轴的交点为 B,且经过 F1，F 2点．（I）求椭圆 C1的方程；（II）设 M(0，－45)，N 为抛物线 C2上的一动点，过点 N作抛物线 C2的切线交椭圆 C1于 P,Q两点，求△MPQ 面积的最大值．21,（本小题满分 12分）已知函数（I）求函数 f（x）的单调递 增区间；（II）若在区间[1,e]上至少存在一点 成立，求实数 p的取值范围．22． （本小题满分 10分）选修 4一 1：几何证明选讲如图△ABC 内接于圆 O，且 AB＝AC，过点 A的直线交圆 O于点 P，交BC的延长线于点 D.（I）求证：AC 2＝AP·AD；（II）若∠ABC＝60°，圆 O的半径为 1，且 P为弧 AC的中点，求 AD的长．23． （本小题满分 10分）选修 4一 4：坐标系与参数方程已知曲线 C的极坐标方程是 ＝I，以极点为原点，极轴为 x轴的正半轴建立平面直角坐标系，直线 l的参数方程为（I）写出直线 l的普通方程与曲线 C的直角坐标方程；5(II )设曲线 C经过伸缩变换 得到曲线 'C，设曲线 '上任一点为 M(x,y)求 x十 2, 3y的最小值．24． （本小题满分 10分）选修 4一 S：不等式选讲设函数 f(x)＝｜x －a｜十 3x,（1）当 a=2时，求不等式 f（x）≥3x 十 2的解集；（2）若不等式 f( x)≤0 的解集包含｛x｜x≤－1}，求 a的取值范围．1旧州中学 2015～2016 学年度第二学期高二年级第一次月考物理试题一、单项选择题（本大题共 8 个小题，每小题 4 分，共 32 分）1、在电磁感应现象中，下列说法中正确的是（ ）A．感应电流的磁场总是跟原来的磁场方向相反B．导体作切割磁感线运动，导体内一定会产生感应电流C．闭合线框放在匀强磁场中做切割磁感线运动，一定能产生感应电流D．感应电流 的磁场总是阻碍原来磁场磁通量的变化2、如图所示，图甲和图乙分别表示正弦脉冲波和方波的交变电流与时间的变化关系．若使这两种电流分别通过两个完全相同的电阻，则经过 1 min 的时间，两电阻消耗的电功之比 W 甲 ∶ W 乙 为( )A．1∶6 B．1∶3C．1∶2 D．1∶ 23、如图所示，导线框 abcd 与 导线在同一平面内，直导线通有恒定电流 I，当线框由左向右匀速通过直导线时，线框中感应电流的方 向是( )A．先 abcd，后 dcba，再 abcdB．始终 dcbaC．先 dcba，后 abcd，再 dcbaD．先 abcd，后 dcba4、一正弦交变电流的有效值为 10A，频率为 50Hz，此交变 电流的瞬时值表达式为（ ）A. i＝10sin314t A B. Ati314sin20C. i＝10sin50t A D. Ati5i5、闭合线圈的匝数为 n，每匝线圈面积为 S，总电阻为 R，在 时间内穿过每匝线圈的磁通量变化为 ，则通过导线某一截面的电荷量为 （ ）2A． B． D． C．RRnSntRn6、在收音机线路中，经天线接收到的电信号既有高频成分又有低频成分，经放大后送给下一级，需要把低频成分和高频成分分开，只让低频成分输入给下一级，我们采用了如图装置电路，其中代号 a、 b 应选择的元件是( )A． a 是电容较大的电容器， b 是低频扼流线圈B． a 是电容较大的电容器， b 是高频扼流线圈C． a 是电容较小的电容器， b 是高频扼流线圈D． a 是电容较小的电容器， b 是低频扼流线圈7、在竖直向上的匀强磁场中，水平放置一个不变形的单匝金属圆线圈，规定线圈中感应电流的正方向如图 1 所示，当磁场的磁感应强度 B 随时间如图 2 变化时，图中正确表示线圈中感应电动势 E变化的是 （ ）A B C D 8、如下图所示的四个日光灯的接线图中， S1为起动器， S2为电键 ， L 为镇流器，能使日光灯正常发光的是（ ）二、多 项 选 择 题 (本 大 题 共 4 小 题 , 每小题给出的四个答案中有两个或两个以上答案是正确的，全选对得 6 分, 选对但不全，得 3 分,有选错或不答的，得 0 分.) 9、如图右所示，发电机每个绕组两端的电压(相电压)为 220 V，三个负载电阻均为 100 Ω，下列说法中不正确的是( )A．发电机采用“Y”接法，负载采用“△”接法12345t/sE2E0E0O-E0-2E012345t/sE2E0E0O-E0-2E0E0E12345t/s2E0O-E0-2E0E0E12345t/s2E0O-E0-2E0IB图 1Bt/sO 12345图 23B．每个负载电阻两端的电压为 220 VC．每个负载电阻两端的电压为 380 VD．通过每个负载的电流为 3.8 A10、在右图所示电路中， L 为电感线圈，灯泡电阻为 R，电流表内阻为零，电压表内阻无限大，交流电源的电压 u＝220 sin100π t V，若保持电压的有效值不变，只将电源频率改为 100 Hz，下列2说法正确的是( )A．电流表示数减小 B．电压表示数减小C．灯泡变暗 D．灯泡变亮11、如右图为一 交流发电机发出的电 流随时间的变化图象，则下列说法正确的是（ ）A、在 A 点时穿过线圈的磁通量最大；B、在 B 点时穿过线圈的磁通量变化率最小；C、在 A 点时线圈处在中性面，电流方向改变；D、在 B 点时线圈处在中性面，电流方向改变。12、如图(a)、(b)所示， R 和自感线圈 L 的电阻都很小，接通 K，使电路达到稳定，灯泡 S 发光，下列说法正确的是 ( )A．在电 路(a)中，断开 K， S 将渐 渐变暗4FvBB．在电路(a)中，断开 K， S 将先变得更亮，然后渐渐变暗C．在电路(b)中，断开 K， S 将渐渐变暗D．在电路(b)中，断开 K， S 将先变得更亮，然后渐渐变暗旧州中学 2015—2016 学年度第二学期高二年级第一次月考 物理答题卷班 级 姓 名 考 号 考 分 一、单选题：（每小题 4 分，共 32 分）二 多选题（每小题 6 分，共 24 分）三、计 算题（本 大题 共 4 个 小 题 ,合计 44 分，解题时要写出必要的物理公式和必要的文字说明）13、（12 分）如右所示，将边长为 L、总电阻为 R 的正方形闭合线圈，从磁感强度为 B 的匀强磁场中以速度 v 匀速拉出（磁场方向，垂直线圈平面）（1）所用拉力 F＝ ． （2）拉力 F 做的功 W＝ ．（3）拉力 F 的功率 PF＝ ． （4）线圈放出的热量 Q＝ ．（5 ）线圈发热的功率 P 热 ＝ ． （6）通过导线截面的电量 q＝ ．14、（16 分）如图所示，边长为 L 的正方形线框 abcd 的面 积为 S=0.1m2，匝数为 N=100 匝，线框绕 ad 边的中点和 bc 边的中点的连线由图所示位置开始以 ω=100πrad/S 做匀速转动，磁感应强度为 B=0.1T。线圈内电阻不计与外电阻 R=10πΩ 构成闭合电路求：（1）感应电动势的峰值；（2）闭合电路电流的瞬时表达式；题 号 1 2 3 4 5 6 7 8答 案题 号 9 10 11 12答 案5（3）若在 A、B 两点接入一理想电压表，则电压表的读数为多少？15、 （16 分）在线电压为 380 V 的三相交流电路中，如图所示，接有三 只电阻均为 484 Ω 的电灯．问：(1)这三只电灯属何种接法？每只灯的电压、电流、功率各是多少？(2)若 L1灯的保险丝熔断，则其余两灯的电压、电流、功率又各是多少？(3)若 L1灯短路，则其余两灯的情况怎样？1旧州中学高二年级英语下学期第一次月考试题第一部分一，阅读理解（共 20小题，每小题 2分，共 40分）AMoney is the root of all evil and new study claims there may be some truth behind the saying．Scientists at the University of California．Berkeley, US，announced on February 27 that rich people are more likely to do unethical (不道德的)things.such as lie or cheat，than poorer people．The scientists did a series of eight experiments．They published their findings online in the Proceedings of the National Academy of Sciences(PNAS，《美国国家科学院院刊》)．They carried out the first two experiments from the sidewalk near Berkeley．They noted that drivers of newer and more expensive cars were more likely to cut off other cars and pedestrians at crosswalks．Nearly 45 percent of people driving expensive cars ignored a peaestrian compared with only 30 percent of people driving more modest (不豪华的)cars．In another experiment，a group of college students was asked if they would do unethical things in various everyday situations．Examples included taking printer paper from work and not telling a salesperson when he or she gave back more change．Students from higher-class families were more likely to act dishonestly．According to the scientists，rich people often think money call get them out of trouble．This makes them less afraid to take risks．It also means they care less about other people’s feelings．Finally，it simply makes them greedier．“Higher wealth status seems to make you want even more，and that increased want leads you to bend the rules or break the rules to serve your self-interest，’’said Paul Piif, lead scientist of the study．2Piff pointed out that the findings don’t mean that all rich people are untrustworthy(不能信赖的)or all poor peopl e honest．He said the experiments were to show how people living in different social situations express their instincts and values in different ways．1．By saying“ money is the root of all evil”，the author wants to_____ ．A．draw readers’ attention to the research B．1ink wealth with bad behaviorC．show how the saying proves the findings D．defend rich people who do unethical things2．Which of the following is TRUE about the experiments the scientists did，according to the scientist quoted?A．Most wealthy people are not trustworthy．B．The findings were not persuasive enough and the scientists will do further experiments．C．Drivers of more expensive cars are more likely to break traffic rules．D．Students from poorer families are not as honest as students from richer families．3．What makes rich people unethical according to the scientists？a．they become more selfish b．they have more desiresc．they believe money talks d．they welcome risksA．a b B．a b d C．b c D．a b c4．Why did the scienti sts do the experiments?A．To show how social status affects people's ethics．B．To show people’s instincts and values in different ways．C. To test whether the saying “money is the root of all evil” is true．D．To show the difference between higher-class people and lower-class people．5．What does the article really want to show us?A．Money is the root of all evil． B．The rich are more likely to act badly．3C．The saying is reasonable． D．All rich people are untrustworthy．BIt is one of the most annoying words in the English language and it seems there is no escaping it．The word “huh?”is in worldwide use, a study found．Researchers discovered that languages spoken in countries from Ghana and Laos to Iceland and Italy all include‘‘huh?”,or something that sounds very like it. They said that while the study may sound silly，the word is an absolutely necessary part of speech．Without it and similar words，it would be impossible to show that we haven’t heard or understood what had been said and this would 1cad to constant misunderstandings．But while other words used in the same context，such as ‘‘story'’ or ‘‘what”，vary widely across languages，“huh?”remains unchanged．The Dutch researchers carefully studied ten languages from around the world，including Siwu, which is spoken in Ghana, and an Australian Aboriginal language，as well as Italian，Spanish，Dutch and Mandarin Chinese．They analysed tapes of recorded conversations for words that sounded like ‘‘huh?”and were used to request that whatever had Just been said be repeated．All contained a version of “huh?”．The word was also found in another21 languages．While there were subtle differences in each country,a11 sounded basically the same．This is surprising because normally unrelated languages will use very different words to describe the same thing．For instance，the Japanese for “dog’’ is ‘‘inu”，while the French is‘‘chien”．It is thought that languages around the world have developed their own version of “huh?’’ because the sound is quick and simple to form，as well as being easily undertood．The researchers，said that it might seem unimportant to carry out scientific research into a word like “huh?'’ but in fact this little word is an essential tool in human communication．They also have an answer for those who claim that‘‘huh?’’isn’t a word．They say that it qualifies because of the small differences in its 4pronunciation in different languages．It also can be considered a word because it’s something we learn to say，rather than a grunt or cry that we are born knowing how to make．6．According to researchers，the word “huh?”is very important in speech because ——．A. its stable meaning in language development B．its important function in communicationC．its simple and easy sound and spelling D．its popularity in every language7．What is the natural response if you hear the lady you’re speaking to say“huh?”?A．You should ask her to repeat what she says before that：B．You should apologize to her for speaking in a low voice．C．You should invite her to share her different views politely．D. You should try to repeat what you’ve just said in a clearer way．8.The main method used in the research of“huh?”was_____________．A．interviewing language experts in universitiesB．talking with people from ten different countriesC．analyzing the recorded conversations in different languagesD．comparing different words with the same meaning in different languages9．According to researchers，‘‘huh?”should be considered a word．rather than a sound because __________ .A．it is listed in most dictionaries B．it is something humans learn to sayC．there is a clear and consistent spelling of the word D．it is pronounces quite differently around the world10．What is the purpose of the text?A．To inform readers about research on the worldwide used word “huh?”．B．To argue that “huh?”is the most important word in every language．5C．To entertain readers by relating similar idioms in different languages．D．To instruct readers of the differences of “huh?”in different languages．CWhen I was young I wanted to be a model，so when a national contest was staged，I convinced my parents to take me for an audition(试演). I was selected and told I had potential．They said that for only$900 I could attend a weekend event which dozens of the most prestigious(有声望的)modeling agencies from around the world would attend．At l 3，my hopes of fame and fortune clouded all judgment and I begged my parents to let me go．We have never been rich，but they saw my enthusiasm and agreed．I imagined being signed by some famous model companies．For months，any boredom or disappointment I faced was pushed aside because I knew I would soon have the chance to be a real model．I thought I would grace the covers of famous magazines!Of course，I wasn’t signed，but what hurt the most was being told that if I grew to 5'9”(about 1．75metres)I could be a success．I prayed for a growth spurt(冲刺)because I could not imagine giving up my dream．I made an appointment with a local modeling agency and the agent demanded$500 for classes．$500 for a photo shoot and $300 for other expenses．My parents only agreed after hours and hours of me begging．The agency sent me out on a few auditions，but with every day I didn’t receive a call，I grew more depressed．The final straw came in July after I had decided to focus on commercial modeling．There was an open call in New York City．We spent hours driving and another few hours waiting．only to be told that I was too short．I was devastated(感到难以承受的)．Years later，I realized that the trip to New York was good as it made me notice I didn’t actually love modeling，just the idea of it．I wanted to be special and 1 was innocently determined to reach an impossible goal．The experience has made me stronger and that will help me in the future．11．What’s the main reason why the author wanted to be a model?6A．She won a national contest．B．She wanted to get reputation and wealth．C．She was urged by some modeling agencies．D．She had full potential to be a successful model．12．What’s the author’s parents’ attitude toward her dream?A．Encouraging． B．Worried． C．Doubtful．D．Enthusiastic．13．What was it that made the author end her attempt to become a model?A．Her parents were strongly against it．B．She realized that it was impossible for her．C．Even a local modeling agency turned her down．D．She didn’t actually love the idea of modeling．14．The underlined phrase ‘'The final straw” probably means __________ .A．the refusal in spite of her long hours of waiting and workingB．the final result that she was admired by the model companyC．the final audition given by the famous agencyD．the decision she made at last not to be a model15．What did the author learn from her experience of struggling to be a model?A．Where there’s a will，there’s a way．B．Being a model is not that easy．C．We should have our own judgment and should not just follow others．D．we might set unpractical goals but the experiences earl help us grow．DLeadership is the most significant word in today’s competitive business environment because it directs the manager of a business to focus inward on their personal abilities and style．Experts on leadership will quickly point out that “how things get done” influences the success of the outcomes and indicates a right way and 7a wrong way to do things．When a noted leader on the art of management，Peter Drucker, coined the phrase “Management is doing things right；leadership is doing the right things，”he was seeking to clarify the distinctions he associates with the terms．When Stephen Covey, founder and director of the Leadership Institute，explored leadership styles in the past decade，he focused on the habits of a great number of highly effective individuals．His Seven Habits of Highly Effective People became a popular bestseller very quickly. His ideas forced a reexamination of the early leadership example，which centered on the feature that was found in the character ethic(道德)and the personality ethic．The former ethic suggested success was founded on modesty, loyalty, courage，patience，and so on. The personality ethic suggested it was one’s attitude，not behavior, that inspired success, and this ethic was founded on a belief of positive mental attitude．In contrast to each of these ideas，Covey advocates that leaders need to understand universal principles of effectiveness，and he highlights how vital it is for leaders to first personally manage themselves if they are to enjoy any hope of outstanding success in their work environments；To achieve a desired vision for your business，it is essential that you have a personal vision of where you are headed and what you value．Business leadership means that managers need to “put first things first,” which implies that before leading others，you need to be clear on your own values，abilities，and strengths and be seen as trustworthy．16．What does Peter Drucker’s phrase infer?A．Leaders should be good at making right decisions．B．Leaders should be good at doing things right．C．Leaders should be good at ignoring distinctions．D．Leaders should be skilled in predicting future．17．Under what condition are people likely to succeed，i n terms of what the personality ethic suggests?A．When people have little determination，they will be successful．8B．When people have good behaviour，they will gain success．C．If people have positive mental attitude．they are likely to succeed．D．If people have negative mental attitude，they are certain to succeed．18．How Can leaders enjoy outstanding success in their work environments，according to Stephen Covey?A．Firstly they have to think highly of themselves．B．They are supposed to benefit themselves．C．They can not adjust themselves． D．First they must manage themselves．19．What is the meaning of the underlined word “vision”?A．Bright future． B．Good beginning． C．Good scenery．D．Pretty background．20．To be good leaders．what must managers Pay close attention to?A．Universal principles of effectiveness． B．Values，abilities and strengths．C．Good qualities such as modesty． D．Courage as well as patience.二，完形填空（共 20小题；每小题 1.5分，满分 30分）阅读下面短文，从短文后所给各题的四个选项（A、B、C 和 D）中，选出可以填入空白处的最佳选项。I used to be a very self-centered person, but in the past two years I have really changed. I have started to think about other people 21 I think about myself. I am happy that I am becoming a 22 person. I think my 23 started when I was at Palomar College. At first, I just wanted to get my 24 and be left alone. I thought I was smarter than everyone else, so I hardly ever 25 to anyone in my classes. By the end of my first semester, I was really 26 . It seemed as if everyone but me had made friends and was having fun. So tried a(n) 27 . I started asking people around me how they were doing, and if they were having trouble I 28 to help. That was really a big 29 for me. By the end of the year, I had several new friends, and two of 30 are still my best friends today. 9A bigger cause of my new 31 , however, came when I took a part-time job at a Vista Nursing Home. One old lady there who had Alzheimer’s disease became my 32 . Every time I came into her room, she was so 33 because she thought I was her daughter. Her real daughter never 34 her, so I took her place. She let me 35 . that making others feel good make me feel good, too, when she died, I was 36 , but I was very grateful to her. I think I am a much 37 person today than I used to be, and I hope I will not 38 these experiences. They have 39 me to care about other people more than about myself. I 40 who I am today, and I could not say that a few years ago. 21. A. since B. before C. or D. unless22. A. famous B. simple C. different D. skilled 23. A. education B. career C. tour D. change24. A. balance B. homework C. degree D. interest 25. A. talked B. wrote C. lied D. reported 26. A. careful B. lonely C. curious D. guilty 27. A. argument B. game C. experiment D. defence 28. A. dared B. offered C. hesitated D. happened29. A. dream B. problem C. duty D. step 30. A. us B. which C. them D. whom31. A. attitude B. hobby C. hope D. luck 32. A. friend B. partner C. guide D. guest 33. A. polite B. happy C. strange D. confident 34. A. bothered B. answered C. visited D. trusted 35. A. explain B. guess C. declare D. see36. A. homeless B. heart-broken C. bad-tempered D. hopeless 37. A. quieter B. busier C. better D. richer38. A. forget B. face C. improve D