program propagates itself by modifying other programs to include a possibly changed copy of itself and that is executed when the infected program is(67). A virus often causes damage or annoyance and may be triggered by some event such as the occurrence of

The UNIX operating system is made up of three parts; the kernel, the shell and the programs. The kernel of UNIX is the(71)of the operating system: it allocates time and memory to programs and handles the filestore and communications in response to(72). The shell acts as an(73)between the user and the kernel. When a user logs in, the(74)program checks the username and password, and then starts another program called the shell. The shell is a command line(75)(CLI). It interprets the commands the user types in and arranges for them to be carded out. The commands are themselves programs: when they terminate, the shell gives the user another prompt(% on our systems).

A．hub

B．center

C．core

D．nucleus

An embedded operating system is the(71)program that manages all the other programs in an embedded device after initial load of programs by a(an)(72). It normally guarantees a capability within a specified(73)size and(74)constraint as well as with application programs. It also n0rmalty has small foot print including initial boot loader, OS kernel, required device drivers,(75)for the user data and so forth. It has very-likely structure of a normal operating system however mainly differentiated by some factors such as type of pre-installed device, functional limits, taking designed job only.

A．hardware

B．business

C．software

D．external

Program（ ）describes program&39;s objectives, desired output, input data required, processing requirement, and documentation.

A.specification B.flowchart C.structure D.address

Passage Two

Questions 26 to 30 are based on the following passage.

Online learning is also called distance education, which helps students who take classes by computer over the Internet to learn certain courses and earn a degree. And it has become more and more popular with both young people and educational institutions.

The School of Continuing and Professional Studies of New York University in Manhattan began online classes in 1992. Its Virtual School has taught more than 10,000 students from across the United States and other countries.

Last year，the school launched NYU Online. It offers NYU's first online Programs for a bachelor's degree. Programs are offered in three areas; leadership And management, information systems management and social sciences. The classes are highly interactive where students communicate with each other and their teachers. Some classes require students to log in at the same time so they can attend live lectures by a professor Students can also ask questions and work together on team projects.

The cost to attend NYU Online depends on how many classes a student is to take It costs as much as fifteen thousand dollars a year. NYU offers no financial aid for international students in this program. If you are interested in the program, you can gel more details at the website: www..nyu.edu. Many other schools, too, offer online education. Students should be especially careful of programs that offer a degree in return for little or no work. These are known as diploma mills, and are illegal in the United States.

Educational advisers also say that before you enter any program, make sure the work will be recognized in your country. You should also make sure the schools you are considering are officially approved.

26. The third paragraph is mainly about the __ of the programs of the School.

A. academic goal and system

B. courses and learning mode

C. learning methods and classes

D. courses and requirements

The relational database model requires the data be(110)through programs that don't rely on the position of the data in the database. This is in direct(111)to the other database mode, where the program has to follow a series of pointers to the data it seeks. A program(112)a relational database simply asks for the data it seeks; the DBMS performs the necessary searches and(113)the information. The(114)on how the search is done are specific to the DBMS and vary from product to product.

A．accessed

B．moved

C．read

D．wrote

The most accurate and most boring way to(105)Java is that it is a new computer programming language developed by Sun Microsystems that creates(106)independent programs that can be distributed and nm remotely. To run Java programs, a computer must have a Java interpreter. Currently(107)Java programs are small "applets" that are(107)as part of web pages.When you use a Java(108)browser to view a Web page that includes a Java applet, the browser loads the applet onto your computer through your modem or network. Then the Java interpreter runs the applet, which could include animation or sound, on your computer rather than transmitting the code bit by bit over Internet. A few thousand bytes of Java code can tam into a powerful program on your computer.So an applet could include(109)with Java interpreter.

A．command

B．comment

C．describe

D．discover

A computer virus is a computer program that is created to make and spread(71)of itself.

A．programs

B．virus

C．copies

D．files