从供选择的答案中选出应填入下面一段英文中______内的正确答案。 Java was introduced by Sun Microsystems

从供选择的答案中选出应填入下面一段英文中______内的正确答案。

Java was introduced by Sun Microsystems in 1995 and instantly(1)created a new sense of the interactive possibilities ofthe Web. Both ofthe major Web browsers include a Java(2)virtual machine. Almost all major operating system developers (IBM, Microsoft, and others) have added Java(3)compilers as part oftheir product offerings.

The Java virtual machine includes an optional just-in-time compiler that(4)dynamically compiles bytecode into executable code as an alternative to(5)interpreting one bytecode instruction at a time. In many(6)cases, the dynamic JIT compilation is faster than the virtual machine interpretation.

JavaScript should not be(7)confused with Java. JavaScript, which originated at Netscape, is interpreted at a higher level, is easier to learn than Java, but(8)lacks some of the portability of Java and the speed of bytecode. Because Java applets will run on almost any operating system without(8)requiring recompilation and because Java has no operating system-unique extensions or variations, Java is generally regarded as the most strategic(10)language in which to develop applications for the Web.

供选择的答案：

1．confused 2．compilers 3．dynamically 4．requiring 5．cases

6．interpreting 7．language 8．virtual 9．created 10．lacks

从下面提供的答案中选出应填入下列英文语句中______内的正确答案。

(1)whether to go with a shared or switched fast LAN technology once you start to max out your shared Ethernet of token-ring LAN is tough call. Users and analysts involved in(2)high-speed LANs have leamed the benefits of each. However there are trade-offs to each, and(3)which fast LAN technology to choose is critical for(4)network performance problems and(5)costly purchasing mistakes.

供选择的答案：

(1) avoiding (2) clipping (3) choosing (4) deciding

(5) dissolving (6) ensuring (7) evolving (8) implementing

(9) knowing (10) solving

计算机网络中对等实体间通信时必须遵循约定的标准协议。不同的协议有不同的功能，如：

(1)：用于网络管理；

(2)：用于移动电话无线上网；

(3)：可用于家庭拨号上网；

(4)：一种面向比特的数据链路通信规程；

(5)：一种路由选择协议。

A．SNMP

B．PPP

C．RIP

D．WAP

从供选择的答案中选出应填入下列叙述中()内的正确答案：

(1)PC总线(A)

(2)输入设备(B)

(3)网络技术(C)

(4)CPU(D)

(5)汉字技术(E)

供选择的答案

A～E：①EISA、PCI、DMA ②键盘、光笔、显示器

③EISA、ISA、PCI ④P5、80386、DRAM

⑤路由器、网桥、PowerPC ⑥触摸屏、摄象机、鼠标器

⑦Internet、TCP/IP、Gateway ⑧CD-ROM、ISA、MPC

⑨国标码、外码、MPC ⑩PowerPC、Pentium、Super SPARC

(11)内码、GB2312-80、字模 (12)X.25、PCI、数据压缩技术

从供选择的答案中选出应填入下列叙述中()内的正确答案：

数据库系统是由(A) 、(B) 、(C) 和软件支持系统组成，其中(A) 是物质基础，软件支持系统中(D) 是不可缺少的，(B) 体现数据之间的联系，(C) 简称DBA。常见的数据模型有多种， 目前使用较多的数据模型为(E)模型。

供选择的答案

A～D：①计算机硬件 ②C语言 ③CPU ④数据库管理系统

⑤数据库 ⑥主菜单 ⑦人 ⑧网络管理系统

E： ①层次 ②网状 ③关系 ④拓朴

从供选择的答案中选出应该填入下面（)中的正确答案。A.汇编程序是指（)。①用汇编语言写的程序②符号程序③汇编语言的处理程序B.为了实现递归子程序的正确调用，人们必须用（)来保存（)及有关信息。①堆栈②线性表③队列④树⑤入口点⑥返回地址⑦断点C.UNIX操作系统是（)研制的，它是用程序语言（)书写实现的。①Bell实验室②DEC公司③IBM公司④PASCAL⑤并发PASCAL⑥MODULA⑦C

从供选择的答案中选出应填入英语文句中()的正确的答案。

Software products may be (A) into four basic types: application programs, programming language processors, operating systems, and system utilities.

Application programs are programs that (B) useful tasks such as solving statistical problems, or keeping your company's books.

Programming language processors are programs that (C) the use if a computer language in a computer system. They are tools for the development of application programs.

Operating systems are programs that (D) the system resources and enable you to run application programs.

System utilities are special programs that (E) the usefulness of or add capabilities to a computer.

A～E: ① manage ② perform ③ support ④ reduce

⑤ divided ⑥ enhance ⑦ implemented ⑧ introduce

⑨ ranked ⑩ run

从供选择的答案中选出应填入下列叙述中()内的正确答案：

在高级语言中，子程序调用语句中的(A) 在个数、类型、/I匝序方面都要与子程序说明中给出的(B) 相一致。用高级语言编写的程序经编译后产生的程序叫(C) 。用不同语言编写的程序产生(C) 后，可用(D) 连接在一起生成机器可执行的程序。在机器里真正执行的是(E)。

供选择的答案

A、B；①实际参数 ②条件参数 ③形式参数 ④局部参数

⑤全局参数

C～E：①源程序 ②目标程序 ③函数 ④过程

⑤机器指令代码 ⑥模块 ⑦连接程序 ⑧程序库

从供选择的答案中选出应填入下列叙述中()内的正确答案：

多媒体技术中，图形格式一般为两类，即(A) 和(B) 。具体的存储方式有许多种，通常用图形文件的后缀名来区分，如以(C) 为后缀名的，则是以ASCII方式存储的图形；而(D) 则不是图形文件的后缀名。多媒体中的视频信息是指(E)。

供选择的答案

A：①灰度 ②位图 ③函数 ④高分辨率

B：①彩色 ②场 ③矢量 ④低分辨率

C：①DIF ②MPG ③JPG ④BMP

D：①DIB ②WMF ③T1F ④WAV

E：①屏幕图像刷新频率 ②图像扫描输入频率

③动态图像 ④静止图片

从供选择的答案中选出应填入英语文句中()的正确的答案。

Software quality assurance is now an (A) sub-discipline of software engineering. As Buckly and Oston point out, (B) software quality assurance is likely to lead to an ultimate (C) of software costs. However, the major hurdle in the path of software management in this area is the lack of (D) software standards. The development of accepted and generally applicable standards should be one of the principal goals of (E) in software engineering.

A: ① emerging ② emergent ③ engaging ④ evolve

B: ① effective ② effortless ③ light ④ week

C: ① balance ② growth ③ production ④ reduction

D: ① usable ② usage ③ useless ④ useness

E: ① management ② planning ③ production ④ research