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2022年吉林工程技术师范学院计算机科学与技术专业《操作系统》科目期末试卷B(有答案)一、选择题1、现有一个容量为10GB的磁盘分区,磁盘空间以簇(Cluster)为单,位进行分配,簇的大小为4KB,若采用位图法管理该分区的空闲空问,即用.位(bit)标识一个簇是否被分配,则存放该位图所需簇的个数为()A.80B.320C.80KD.320K2、操作系统为了管理文件,设计了文件控制块(FCB),文件控制块的建立是().A.在调用create()时B.在调用open()时C.在调用read()时D.在调用write()3、某系统中有11台打印机,N个进程共享打印机资源,每个进程要求3台打印机。
当N的取值不超过()时,系统不会发生死锁。
A.4B.5C.6D.74、下面所列进程的3种基本状态之间的转换不正确的是()A.就绪状态→执行状态B.执行状态→就绪状态C.执行状态→阻塞状态D.就绪状态→阻塞状态5、一次性分配所有资源的方法可以预防死锁的发生,这种方法破坏的是产生死锁的4个必要条件中的()。
A.互斥条件B.占有并请求C.不剥夺条件D.循环等待6、总体上说,“按需调页”(Demand-Paging)是个很好的虚拟内存管理策略。
但是,有些程序设计技术并不适合于这种环境,例如()A.堆栈B.线性搜索C.矢量运算D.分法搜索7、考虑页面替换算法,系统有m个页帧(Frame)供调度,初始时全空:引用串(Reference String)长度为p.包含了n个不同的页号,无论用什么算法,缺页次数不会少于()A.mB.pC.nD.min(m,n)8、下列关于批处理系统的叙述中,正确的是()I.批处理系统允许多个用户与计算机直接交互II.批处理系统分为单道批处理系统和多道批处理系统III.中断技术使得多道批处理系统的1/O设备可与CPU并行工作A.仅II、IIIB.仅IIC.仅I、IID. 仅I、III9、()不是操作系统的功能。
※声明:1. 实验所属课本原件为《Visual Basic程序设计教程(第4版)(□主编龚沛曾□编者杨志强陆慰民谢步瀛)》;2. 实验答案代码采用红色字体突出;3. 仅提供课本前七个实验的代码,之后的实验上课考试均不涉及故不作;4. 教学平台上机实验、课本篇后实验,两者题目操作略有差异,作业以前者要求为准,故以下答案代码为前者代码,如对后者代码有所需求请私信;5. 本文为作者原创,复制转载请注明出处;6. 如果对代码有所疑问,或者略感繁琐想直接要已完成实验,请私信;7. 浏览、复制、下载后请给作者一个合理的评价,感激不尽。
实验1-1图2.1.1 实验1.1运行界面提示:(1) 实验所用到的控件及属性设置见表2.1.1。
表2.1.1 属性设置控件名属性Label1 Caption="欢迎学习Visual Basic";Font属性:字号为二号,字体为隶书,Aligment=2(居中)Label2 Caption="请输入你的姓名";Font属性:字体为楷体,有下划线Label3 Caption="",BorderStyle=1Text1 Text=""Command1 Caption="你输入的姓名是"(2) “欢迎学习Visual Basic”要在两行显示,只要将Label1控件的宽度缩小一些。
Private Sub Command1_Click()Label3.Caption = Text1.TextEnd Sub实验1-2Sub MyMove()Label1.Move Label1.Left - 50, Label1.TopIf Label1.Left < 0 Then Label1.Left = Form1.Width End SubPrivate Sub Command1_Click()Timer1.Interval = 200End SubPrivate Sub Command2_Click()Timer1.Interval = 0Call MyMoveEnd SubPrivate Sub Form_Load()Timer1.Interval = 0End SubPrivate Sub Timer1_Timer()Call MyMoveEnd Sub编一个程序,在文本框中统计在该窗口上鼠标单击的次数,效果如图2.1.2所示。
2022年湖北工程学院计算机科学与技术专业《操作系统》科目期末试卷B(有答案)一、选择题1、下列选项中,磁盘逻辑格式化程序所做的T作是()I.对磁盘进行分区II.建立文件系统的根目录III.确定磁盘扇区校验码所占位数IV.对保存空闲磁盘块信息的数据结构进行初始化,A. 仅IIB.仅II、IVC.仅III,IVD.仅I、II、IV2、若8个字(字长32位)组成的位示图管理内存,假定用户归还一个块号为100的内,存块,它对应位示图的位置为()。
假定字号、位号、块号均从1开始算起,而不是从0开始。
A.字号为3,位号为5B.字号为4,位号为4C.字号为3,位号为4D.字号为4,位号为53、若某单处理器多进程系统中有多个就绪进程,则下列关于处理器调度的叙述中,错误的是()。
A.在进程结束时能进行处理器调度B.创建新进程后能进行处理器调度C.在进程处于临界区时不能进行处理器调度D.在系统调用完成并返回用户态时能进行处理器调度4、下列选项中,导致创建新进程的操作是()。
I.用户登录成功 II.设备分配 III.启动程序执行A.仅I和IIB.仅II和IIIC. 仅I和IIID. I,II,III5、下列关于进程和线程的叙述中,正确的是()A.不管系统是否支持线程,进程都是资源分配的基本单位,B.线程是资源分配的基本单位,进程是调度的基本单位C.系统级线程和用户级线程的切换都需要内核的支持D.同一进程中的各个线程拥有各自不同的地址空间6、系统为某进程分配了4个页框,该进程已访问的页号序列为2,0,2,9,3,4,2,8,2,4,8,4,5,若进程要访问的下页的页号为7,依据LRU算法,应淘汰页的页号是()A.2B.3C.4D.87、假定有个请求分页存储管理系统,测得系统各相关设备的利用率为:CPU为10%,磁盘交换区为99.7%:其他1/O设备为5%。
试问:下面()措施可能改进CPU的利用率?I.增大内存的容量II.增人磁盘交换区的容量III.减少多道程序的度数IV.增加多道程序的度数V.使用更快速的磁盘交换区VI.使用更快速的CPUA.I、II、III、IVB.I、IIC.II、III、VD. II、VI8、下列指令中,不能在用户态执行的是()A.trap指令B.跳转指令C.压栈指令D.关中断指令9、下列选项中,在用户态执行的是()。
2019高考物理一轮选训练导(3)李仕才一、选择题1、(2017·福建省厦门市高中毕业生3月第一次质量检测)如图所示,在水平地面上竖直固定一绝缘弹簧,弹簧中心直线的正上方固定一个带电小球Q,现将与Q带同种电荷的小球P,从直线上的N点由静止释放,在小球P与弹簧接触到速度变为零的过程中,下列说法中正确的是( )A.小球P的电势能先减小后增加B.小球P与弹簧组成的系统机械能一定增加C.小球动能的减少量等于电场力和重力做功的代数和D.小球P速度最大时所受弹簧弹力和库仑力的合力为零解析:选B.小球下落的过程中,电场力一直对小球做正功,小球P的电势能一直减小,选项A错误;因Q对P做正功,故小球P与弹簧组成的系统机械能一定增加,选项B正确;小球动能的减少量等于电场力和重力以及弹力做功的代数和,选项C错误;小球P速度最大时所受弹簧弹力、重力以及库仑力的合力为零,选项D错误;故选B.【链接】历史上有些科学家曾把在相等位移内速度变化相等的单向直线运动称为“匀变速直线运动”(现称“另类匀变速直线运动”),“另类加速度”定义为,其中v0和v s分别表示某段位移s内的初速和末速。
A>0表示物体做加速运动,A<0表示物体做减速运动。
而现在物理学中加速度的定义式为,下列说法正确的是()A.若A不变,则a也不变B.若A>0且保持不变,则a逐渐变小C.若A不变,则物体在中间位置处速度为D.若A不变,则物体在中间位置处速度为【答案】C2、(2018届山东省、湖北省部分重点中学联考)如图所示,宽为L=0.6m的竖直障碍物中间有一间距d=0.6 m的矩形孔,其下沿离地高h=0.8 m,与障碍物相距S=1.0 m处有一小球以=5 m/s的初速度水平向右抛出。
空气阻力忽略不计,g取10 m/s2.为使小球能无碰撞地穿过该孔,小球离水平地面的高度H可以为()A. 1.5 mB. 1.4 mC. 1.3 mD. 1.2 m【答案】AB3、如图所示,半径为R的光滑圆环竖直放置,N为圆环的最低点。
第10章常见错误和程序调试Common error and program debug本章概要Summary of the chapter程序调试是程序设计过程中一个必不可少的环节,调试过程中的错误处理则是保证程序正确性的必要手段。
本章将常见的一些错误列举出来,以方便进行程序调试。
C语言是一种介于高级语言与低级语言之间的中级语言,允许直接访问物理地址,能进行位操作,可以直接对硬件进行操作。
程序员使用C语言编写程序会感到限制少、灵活性较大、功能强,可以编写出能解决复杂问题的、运行效率高、占用内存少的高质量程序,不仅用来编写系统软件,也用来编写应用软件,所以得到广泛应用。
正因为如此,C语言受到愈来愈广泛的重视,从初学者到高级软件人员,都在学习C和使用C语言。
但是要真正学好、用好C并不容易。
因为C语言允许编程人员有较大的自由度,从而放宽了语法检查,C编译程序对语法的检查不如其他高级语言那样严格,因此,往往要由程序设计者自己设法保证程序的正确性。
这就使人感到难以掌握,尤其是初学者,容易出错,出了错还不知什么原因、如何处理。
另外,C语言有些语法规定和其他高级语言不同,学习过其他高级语言的读者往往按照使用其他高级语言的习惯来写C程序,这也是出错的一个原因。
调试一个C程序要比调试一个其它高级语言的程序更困难一些。
需要不断积累经验,提高程序设计和调试程序的水平。
10.1常见错误分析(Common error analyse)程序出错有三种情况:①语法错误。
由于违背了C语言的语法规定而引起的。
如双引号或括号不全、do-while 语句缺少while、使用关键字作变量名等,对这类错误,编译程序一般都能检测出来,给出“出错信息”。
并且告诉你在哪一行出错。
只要细心,是可以很快发现并排除的。
②逻辑错误。
由于程序的结构或算法错误引起的。
程序并没有语法错误,程序运行过程中也没有发生错误,只是最后的运行结果并不是希望的结果。
例如,有下面的程序段:main( ){ int sum=0, i=1;while(i<=100)· 204 ·第10章常见错误和程序调试sum=sum+i;i++;printf("%d\n", sum);}语法并无错误。
2017年高中数学第一章坐标系阶段质量评估北师大版选修4-4编辑整理:尊敬的读者朋友们:这里是精品文档编辑中心,本文档内容是由我和我的同事精心编辑整理后发布的,发布之前我们对文中内容进行仔细校对,但是难免会有疏漏的地方,但是任然希望(2017年高中数学第一章坐标系阶段质量评估北师大版选修4-4)的内容能够给您的工作和学习带来便利。
同时也真诚的希望收到您的建议和反馈,这将是我们进步的源泉,前进的动力。
本文可编辑可修改,如果觉得对您有帮助请收藏以便随时查阅,最后祝您生活愉快业绩进步,以下为2017年高中数学第一章坐标系阶段质量评估北师大版选修4-4的全部内容。
第一讲坐标系一、选择题(本大题共10小题,每小题5分,共50分,在每小题给出的四小选项中,只有一项是符合题目要求的).1.原点与极点重合,x轴正半轴与极轴重合,则点(-2,-2\r(3))的极坐标是( )A.错误!B.错误!C.错误!ﻩD.错误!解析:由直角坐标与极坐标互化公式:ρ2=x2+y2,tan θ=错误!(x≠0).把点(-2,-2错误!)代入即可得ρ=4,tan θ=错误!,因为点(-2,-2错误!)在第三象限,所以θ=错误!.答案: B2.在极坐标系中有如下三个结论:①点P在曲线C上,则点P的极坐标满足曲线C的极坐标方程;②tan θ=1与θ=错误!表示同一条曲线;③ρ=3与ρ=-3表示同一条曲线.在这三个结论中正确的是()A.①③B.①C.②③D.③解析: 在直角坐标系内,曲线上每一点的坐标一定适合它的方程,但在极坐标系内,曲线上一点的所有坐标不一定都适合方程,故①是错误的;tan θ=1不仅表示θ=错误!这条射线,还表示θ=错误!这条射线,故②亦不对;ρ=3与ρ=-3差别仅在于方向不同,但都表示一个半径为3的圆,故③正确.答案: D3.可以将椭圆\f(x2,10)+错误!=1变为圆x2+y2=4的伸缩变换( )A.错误!ﻩB.错误!C.错误!ﻩ D.错误!解析: 方法一:将椭圆方程\f(x2,10)+错误!=1化为错误!+错误!=4,∴错误!2+错误!2=4,令错误!得x′2+y′2=4,即x2+y2=4,∴伸缩变换错误!为所求.方法二:将x2+y2=4改写为x′2+y′2=4,设满足题意的伸缩变换为错误!代入x′2+y′2=4得λ2x2+μ2y2=4,即错误!+错误!=1,与椭圆错误!+错误!=1比较系数得错误!解得错误!∴伸缩变换为错误!即错误!.答案: D4.极坐标方程4ρsin2错误!=5表示的曲线是( )A.圆ﻩB.椭圆C.双曲线的一支ﻩD.抛物线解析:若直接由所给方程很难断定它表示何种曲线,因此通常要把极坐标方程化为直角坐标方程,加以研究.4ρ·sin2\f(θ,2)=4ρ·错误!=2ρ-2ρcosθ=5,化为直角坐标方程:2错误!-2x=5,化简,得y2=5x+错误!。
2021年忻州师范学院网络工程专业《计算机组成原理》科目期末试卷A(有答案)一、选择题1、某容量为256MB的存储器由若干4M×8位的DRAM芯片构成,该DRAM芯片的地址引脚和数据引脚总数是()。
A.19B.22C.30D.362、一个存储器系统中,常常同时包含ROM和RAM两种类型的存储器,如果用lK×8位的ROM芯片和lK×4位的RAM芯片,组成4K×8位的ROM和1K×8位的RAM存储系统,按先ROM后RAM进行编址。
采用3-8译码器选片,译码信号输出信号为Y0~Y7,其中Y4选择的是()。
A.第一片ROMB.第五片ROMC.第一片RAMD.第一片RAM和第二片RAM3、假设寄存器的内容为00000000,若它等于-128,则该机器采用了()。
A.原码B.补码C.反码D.移码4、在浮点机中,判断原码规格化的形式的原则是()。
A.尾数的符号位与第一数位不同B.尾数的第一数位为1,数符任意C.尾数的符号位与第一位相同D.阶符与数符不同5、关于浮点数在IEEE754标准中的规定,下列说法中错误的是()。
I.浮点数可以表示正无穷大和负无穷大两个值Ⅱ.如果需要,也允许使用非格式化的浮点数Ⅲ.对任何形式的浮点数都要求使用隐藏位技术IⅣ.对32位浮点数的阶码采用了偏移值为l27的移码表示,尾数用原码表示6、一次总线事务中,主设备只需给出一个首地址,从设备就能从首地址开始的若干连续单元读出或写入多个数据。
这种总线事务方式称为()。
A.并行传输B.串行传输C.突发传输D.同步传输7、在计数器定时查询方式下,正确的描述是()。
A.总线设备的优先级可变B.越靠近控制器的设备,优先级越高C.各设备的优先级相等D.对硬件电路故障敏感8、CPU中不包括()。
A.操作码译码器B.指令寄存器C.地址译码器D通用寄存器9、在计算机系统中,作为硬件与应用软件之间的界面是()。
目录目录 (1)第1章C语言编程 (4)练习1.1 (4)练习1.2 (5)练习1.3 (5)第2章编程初步 (6)习题2.1 (6)习题2.2 (7)习题2.3 (9)习题2.4 (10)第3章条件判断 (12)习题3.1 (12)习题3.2 (14)习题3.3 (19)习题3.4 (21)第4章循环 (24)习题4.1 (24)习题4.2 (26)习题4.4 (27)习题4.5 (29)第5章数组 (31)习题5.1 (31)习题5.2 (33)习题5.3 (35)习题5.4 (36)习题5.5 (39)第6章字符串和文本的应用 (41)习题6.1 (41)习题6.2 (50)习题6.3 (53)习题6.4 (53)第7章指针 (57)习题7.1 (57)习题7.2 (59)习题7.3 (61)习题7.4 (63)习题8.1 (65)习题8.2 (67)习题8.3 (69)习题8.4 (73)第9章函数再探 (79)习题9.1 (79)习题9.2 (80)习题9.3 (83)习题9.4 (85)第10章基本输入输出操作 (87)习题10.1 (87)习题10.2 (89)习题10.3 (91)习题10.4 (92)第11章结构化数据 (95)习题11.1 (95)习题11.2 (99)习题11.3 (103)习题11.5 (114)第12章处理文件 (119)习题12.1 (120)习题12.2 (121)习题12.3 (125)习题12.4 (127)第13章支持功能 (132)习题13.1 (133)习题13.2 (133)习题13.3 (135)《C语言入门经典(第4版)》课后练习参考答案第1章C语言编程练习1.1 编写一个程序,用两个printf()语句别离输出自己的名字和地址。
练习1.2将上一个练习修改成所有的输出只用一个printf()语句。
练习1.3编写一个程序,输出下列文本,格式如下所示:"It's freezing in here," he said coldly.第2章编程初步习题2.1 编写一个程序,提示用户用英寸输入一个距离,然后将该距离值输出为码、英尺和英寸的形式。
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否则就听不成啦!Part 1 Compound Dictation(每小题: 分)Directions: In this section you will hear a passage or passages three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks with the information you have just heard. Finally, when the passage is read for the third time, you should check what you have written. Questions 1 to 10 are based on the following passage.I would like to tell you something about a plane that you may have heard something about. Have you traveled on any of the new 1.passenger on one of these planes, try to imagine a jet which is more than seventy meters long and more than five 2.3. height throughout. Such a plane costs at least twenty-five million dollars to build. It costs at least $6,000 to fill this plane with4.a great5.and they are all needed when the plane is full of passengers. The jet holds more than 400 passengers.6.that number in one jet plane!Is there any danger that the jet's engine will fail? 7.fact, has been done to make it safe. 8.is the case that not all of the engines are necessary at any one time. 9.gaintstoriestallfueltheaterImagineFortunatelyOn each plane there are twice as many engines as the needs to fly(There are also two mechanical pllots to take charge of the planeD. keep up with2.Hot metal ________ as it grows cooler.A. contractsB. reducesC. condensesD. compresses3.Although the pay is not good, people usually find social work________ in other ways.A. payableB. respectfulC. gratefulD. rewarding4.I'm in no ________ this evening to listen to popular music.A. feelingB. attitudeC. moodD. tendency5.He is one of the most ________ singers in his country.A. preferredB. knownC. favorable6.Jack will ________ his nervousness once he's in front of thecamera.A. get awayB. get offC. get throughD. get over7.I didn't know what to do but then an idea suddenly ________to me.A. happenedB. enteredC. occurredD. hit8.He has been ________ of murdering the Japanese visitor.A. blamedB. chargedC. accusedD. arrested9.We've ________ salt. Ask Mrs. Jones to lend us some.A. run away withB. run downC. run off10.Regardless ________ his appearance, he is innocent.A. toB. inC. ofD. for11.________, I've decided to travel by sea, as it is obviouslycheaper and more comfortable.A. At second thoughtB. On second thoughtC. In second thoughtD. From second thoughts12.Nobody knows the age of the earth ________ certain.A. byB. inC. withD. for13.The government is believed to be considering ________ a lawmaking it a crime to import any kind of weapon.A. to passB. have passesC. passed14.________ half way through the exercise, the teacher changedhis mind and collected all our papers.A. When onlyB. Being onlyC. When we were onlyD. Having been15.Austin did not have time to go to the concert last nightbecause she was so busy ________ her trip to America.A. to have prepared forB. to prepare forC. preparing forD. being prepared for16.The capital gathers in many of the elite (精英) of China, yetsome cannot ________ their talents into full play because of the fierce competition.A. carryB. bringC. holdD. take17.Some newly-married couples think that it will give them asense of achievement to properly rear a child and to see him or her ________ to be a useful person.A. fall outC AD C D D C C D C B D D C C B B B C A"Within the last wild lands of North America lives an animal that inspires respect and fear around the world. It is the grizzly bear (灰熊). Grizzlies (灰熊) can sprint thirty-five plus miles an hour, smell fish at nine or more miles, and drag a thousand-pound animal up steep mountains. The grizzly bear is one of a very few remaining on earth that can kill a human in physical combat. It can remove a human head with a single hit, or cause serious harm to a person in rapid order. Within the last wilderness areas where they live, they are the undisputed king of all beasts. I know this all very well. My name is Timothy Treadwell, and I live with the wild grizzly." Timothy Treadwell (April 29, 1957-October 5, 2003), born Timothy Dexter, gave a warning here that we should all pay attention to. Animals, particularly the bears he knew well, can be deadly. As it turns out, Treadwell should've taken his own advice and respected the danger these animals present. He should've kept his distance from them. If he had, he might be with us today.Who was Timothy Treadwell?Treadwell was an environmentalist and bear enthusiast who lived among the Coastal brown bears of Katmai National Park in Alaska for approximately 13 seasons. At the end of his thirteenth season in the park in 2003, he and his girlfriend Amie Huguenard (age 37) were killed and partially eaten by a brown bear. The attack was notable because of the unusual lifestyle of the victims, and the survival of an audio recording of the attack. Treadwell's life, work, and death were the subject of the 2005 documentary film by Werner Herzog titled Grizzly Man.Life StoryBorn in Long Island, New York, much of what is known of Timothy Treadwell's life is documented by Treadwell himself. Treadwell characterized himself as an actor, recovering alcoholic, former drug user, and hero of the wild. According to his personal accounts, he became involved with drugs after failing to gain the role won by Woody Harrelson in the TV comedy Cheers. Treadwell claimed to his parents that he was second-choice for the role, but this has not been independently verified.Interest in bearsinterested in bears and, in the last 5 years of his life, documentedmany of his experiences and interactions with bears via home video.Treadwell attributed his recovery from drug use to his relationshipwith bears.By 2001, Treadwell became notable enough to receive extensivemedia attention both on television and in environmental circles.Through his videos, he became known for attempting to createpersonal relationships with the bears he worked with.As an activist, he actively communicated with the public, includingtraveling throughout the United States to educate school childrenabout bears, and appearing on the Discovery Channel, Late Showwith David Letterman, and Dateline NBC to discuss his experiences.He was also a co-author, with Jewel Palovak, of the book Among Grizzlies: Living with Wild Bears in Alaska, where he described his adventures in Alaska.Treadwell, along with his friends Jewel Palovak, and formerAmerican Gladiator Jonathan Byrne founded Grizzly People, apolitical organization devoted to protecting bears and preservingtheir wilderness home. Despite the organization's name, Treadwelldid not associate with grizzly bears, a term properly applied only tobrown bears that live farther inland.DeathIn October 2003, Treadwell and his girlfriend, Amie Huguenard,visited Katmai National Park in Alaska. Treadwell, who never carriedany means of defense against bear attacks, chose to set hiscampsite near a stream where bears commonly feed in the fall.Treadwell was in the park later in the year than usual, at a timewhen bears fight to gain as much fat as possible before winter, andlimited food supplies cause them to be more aggressive than inother months. It has been noted that food was scarce that fall, andthe bears were therefore more aggressive than usual.On October 6, 2003, Treadwell and Huguenard's bodies werediscovered by the Kodiak air taxi pilot who arrived at their campsiteto pick them up from their trip. A large elderly male bear (taggedBear 141) protecting the campsite was killed by park police whilethey attempted to get the bodies. A second adolescent bear waskilled a short time later after it charged the park police. It was latershown that the first animal had consumed parts of the couples'usually encountered, though this point is disputed.A video camera, with the lens cap in place, was recovered at thesite. The video camera had been turned on at some point during thefatal attack, presumably by Huguenard, but the camera recordedonly six minutes of audio before running out of tape. Treadwell'shead, partial backbone, and left arm and hand still wearing his wristwatch were recovered at the scene. Huguenard's partial body wasfound nearby somewhat buried in dirt.Methods and CriticismTreadwell's methods were generally thought unsound by bearexperts and public alike. He named many of the bears heencountered and often moved close enough to them that he couldtouch them and interact with them on a personal level.Many wildlife experts objected to his methods, believing that hisattitude toward the bears was too brave, that he ignoredwell-known dangers of working with bears, and that he thought ofthem too much as people. Experts also believe that he endangeredthe animals by making them too comfortable with humans, thusincreasing the likelihood of dangerous encounters in the future. Hisdeath by bear attack is seen by some as a natural conclusion of hismethods of interacting with bears.His critics also note that while Treadwell believed that he wasprotecting bears, control experts have stated that incidents of illegalhunting in the area were low and did not affect the population level.However, according to the "Grizzly People" organization hefounded, five bears were killed in the year after his death, whilenone had been killed while he was present in Katmai. This last pointis disputed.Grizzly Man, the FilmIn 2005, director Werner Herzog released Grizzly Man, a documentary about Treadwell's work with wildlife in Alaska, which aired on the Discovery Channel and is frequently rerun. It includes some of the film that Treadwell took, and also interviews with people who knew him, and his appearance on David Letterman. Grizzly Man is generally considered to have a critical take on Treadwell, his methods and his character; many people say thatGrizzly Man made Treadwell look mentally unbalanced. However,Herzog does praise Treadwell's films and pictures.1.There are not many animals that can, like the grizzly,________________.A. inspire respect and fearB. live in wilderness areasC. kill a human in physical combatD. sprint thirty-five plus miles an hour2.Why was the attack on Treadwell and Huguenard notable?________________A. They were partially eaten.B. They had an unusual lifestyle.C. They were filmed by Werner Herzog.D. They were attacked by a brown bear.3.What did Treadwell characterize himself as in his personalaccounts? ________________A. A TV actor in the comedy Cheers.B. A man from Long Island, New York.C. A grizzly bear.D. A hero of the wild.4.Treadwell attributed his recovery from drug use to________________.A. his relationship with bearsB. his experiences in the wildC. his several visits to AlaskaCBDACDCinteracting with bears incidents of illegal hunting (1.Prior to the successful completion of the Panama Canal,________.A. France bought a strip of land across the Isthmus of PanamaB. Malaria was wiped out as a killer diseaseC. one country failed in its attempts to build a canalD. American doctors were honored for their work2.The building of the Panama Canal represents ________.A. man's unyielding desire for progressB. man's unceasing thirst for dangerC. man's ability to resist diseaseD. man's spirit of invention3.What was given priority by the United States?A. Buying a strip of land.B. Starting the building the canal immediately.C. the prevention of illness.D. the Spanish-American War.4.The author presents details according to ________.A. order of importanceB. spatial (空间的) orderC. simple listingD. time order5.What is the main idea of the passage?A. The elimination of yellow fever.B. The discovery of gold in California.C. The efforts recorded in the building of the Panama Canal.D. The work of American medical heroes.Questions 6 to 10 are based on the following passage.At one time a traveler could learn about a region by looking at the houses. For example, he or she could understand what building materials were available. In areas with many wood houses, the traveler would have guessed that there were nearby forests. Stone houses would have indicated that stones were easy to get. However, a closer look at the houses would have told the traveler even more about the area.People used to build houses that fitted the climate of their areas. For example, in desert regions there is a big difference between daytime and nighttime temperatures. Therefore, many desert people built houses with very thick walls. These thick walls served a useful purpose in the houses. For example, in the winter the thick walls absorbed the sun's warmth during the day and radiated the heat at night. Desert people were relatively comfortable in their homes, or residences, at all times because they built them to fit the desert climate.Then the supply of fuel for electricity became both cheap and easy to get. The effect on housing was immediate. People began to build their homes according to fashion instead of utility. Houses no longer reflected the availability of building materials or climate.Houses with steep roofs could be found in the tropics, the warm regions of the Earth, even though these pointed roofs originated in snowy regions of the world. Heavy snow falls off a slanted (歪斜的) roof. Another example is the use of glass. Houses made almost completely of glass could be found in very cold places. Yet ordinary glass does not insulate (绝缘) well because it neither keeps out cold air nor keeps in warm air. As long as fuel was cheap and easy to get, people could build any type of house any place.6.What are two things that a traveler could learn about an areaby looking at the houses?A. The climate is poor and so are the people living in it.B. The climate in the area and the kind of building materialseasy for the people to reach.C. There is a forest nearby and they are on the top of amountain.D. They are near a house and its owner is not there at themoment.7.The main idea of Paragraph 1 is that ________.A. wood is a forest productB. there are no stones in forestsC. houses used to tell about a regionD. people used to travel to learn about houses8.The main idea of Paragraph 2 is that ________.A. thick walls absorb heat from the sunB. people built houses to fit the climateC. people are comfortable in their housesD. in the desert, daytime temperatures are lower thannighttime temperatures9.The main idea of Paragraphs 3 and 4 is that ________.A. heavy snow does not stay on steep roofsB. ordinary glass does not insulate wellC. fuel is used to produce electricityD. the supply of fuel affects home building10.What does "radiate" (Para. 2) mean?A. Give off.C A CD D B D B D C。