Indicate the specific meaning of each letter and number code in XK5040 machine tool model.

（1）is the science of hiding information.Where as the goal of cryp to graphy is to make data unreadable by a third party.the goal of steganography is to hide the data from a third party.In this article,I will discuss what steganography is,what purposes it serves,and will provide an example using available software. There are a large number of steganographic（2）that most of us are familiar with(especially if you watch a lot of spymovies),ranging from invisible inkandmicrodotstosecretingahiddenmessageinthesecondletterofeachwordofalargebodyoftextandspreadspectrumradiocommunication.With computersandnetworks,there arem any other ways of hiding informations,suchas: Covertchannels(c,g,Lokiandsomedistributeddenial-of-servicetoolsusetheInternetControl（3）Protocol,orICMP,asthecommunicationchannelbetweenthe“badguy”andacompromicyedsystem) HiddentextwithinWebpages Hidingfilesin“plainsight”(c,g.whatbetterplaceto“hide”afilethanwithanimportantsoundingnameinthec:\winntsystem32directory) Nullciphers(c,g,usingthefirstletterofeachwordtoformahiddenmessageinanotherwiseinnocuoustext) steganographytoday,however,issignificantlymore（4）than the example about suggest,allowing ausertohidelargeamountsofinformationwithinimageandaudio.Theseformsofsteganographyoftenareusedinconjunctionwith cryptographysothe information is double protected;firstitisencryptedandthenhiddensothatanadvertisementfirst.find the information(an often difficult task inandofitself)and the decryptedit. The simple stapproachtohidingdatawithinanimagefileiscalled（5）signatureinsertion.In this method,we can take the binaryrepresentationofthehiddendataandthebitofeachbytewithinthecovertimage.If weareusing 24-bitcolor the amount and will be minimum and indiscriminate to the human eye.

A.Cryptography

B.Geography

C.Stenography

D.Steganography@@@SXB@@@A.methods

B.software

C.tools

D.services@@@SXB@@@A.Member

B.Management

C.Message

D.Mail@@@SXB@@@A.powerful

B.sophistication

C.advanced

D.easy@@@SXB@@@A.least

B.most

C.much

D.less

UML-based tools are often used for J2EE/.NET application analysis and design, both because UML's object orientation is ideal for the J2EE/.NET implementation(66)and because of the expanding scope and complexity of today's enterprise endeavors.(67)the approaches diverge at the coding/implementation phase, a common set of analysis and design techniques applies to both J2EE and.NET.

The use of a virtual, machine(VM)architecture is also common to J2EE and .NET. Application development tools(68)intermediate-level code instead of platform-specific binary code, which means the VM interprets that code in real time or performs Just-In-Time(JIT)compilation; the Microsoft VM always runs JIT-compiled code. This VM-based model results in(69)-independent applications and is conducive to the late-binding technique that's(70)to the OO approach.

A．block

B．model

C．module

D．group

?Read the following letter.

?Choose the best word to fill each gap.

?For each question (19 -33), mark one letter (A, B, C or D) on your Answer Sheet.

?One answer has been given as an example.

Most managers make decisions under conditions of risk. and the managers at Super Drinks are no exception. With 10 percent of the domestic soft-drink market under its (19) the company has now (20) its horizons and moved into the wine industry.

Having (21) ＄110 million buying the Taste Wine corporation. Super Drinks are currently in the process of (22) to the wine business the same tools that have made coke a popular soft drink in the world -- money, muscle and marketing. The firm is trying to (23) its newly acquired wine business to the soft-drink mold that has proved (24) .

Can Super Drinks make this (25) pay off? The company is optimistic. For example. while Taste grossed only ＄65 million the year it was (26) , Super Drinks' executives believe it will gross over ＄1 billion by the end of the 2010s. nearly 15 times Taste's current (27) . On the other hand. there are several things that Taste has going for. One is the Super Drinks' money and management expertise that are available for this wine (28) The other is that while Taste, in the past, (29) only the New York table wine business and produced sweeter wines that (30) less than 10 percent of the domestic market, the Taste wine brand was the most commonly (31) of all. Building on these (32) , the management hopes to. via effective decision making, make Taste wine almost as (33) as Super Drinks.

(19)

A．guidance

B．direction

C．control

D．management

The potential of closed-circuit television and other electronic teaching tools is so great that it is inspiring to imagine "the school of tomorrow". Televised lesson will be given in a central building having perhaps four or five master studios. The lesson will be carried out into classrooms all over a city, or even an entire country. After a televised lesson has been given, the classroom teacher will take over for the all-important "follow-up" period. The students will ask any troublesome questions, and difficult points will be cleared up through discussion. The teacher in the classroom will have additional electronic tools. On the teachers desk, the traditional bright red apple will have been replaced by a multiple-control panel (控制板) and magnetic tape players. The tape machines will run prerecorded lessons which pupils will follow by headphones. The lesson will be specifically connected closely to the students levels of ability. For instance, while the class as a whole studies history, each student will receive an individual history lesson directed to his particular level of ability. Should questions arise, the students will be able to talk directly to the teacher on individual "intercoms" (对讲装置) without disturbing the rest of the class. In this way, the teacher will be able to conduct as many as three classes at the same time.

The closed-circuit television will probably carry lessons to______.

A．only a single classroom in the school

B．all the schools with classrooms

C．all the classrooms in the world

D．all the classrooms in a city or a country

Imagine a world in which we are assigned a number that indicates how influential we are. This number would help determine【C1】______you receive a job, a hotel-room upgrade or free samples at the supermarket. If your influence score is【C2】______, you dont get the promotion, the suite or the cookies without charge. This is not science fiction. Its happening to millions of social network users. If you have a Facebook, Twitter or LinkedIn account, you are already being【C3】______—or will be soon. Companies【C4】______names like Klout, Peerlndex and Twitter Grader are in the【C5】______of scoring millions, eventually billions, of people on their【C6】______of influence. Yet the companies are not simply looking at the number of【C7】______or friends youve gathered.【C8】______, they are beginning to measure influence in more【C9】______ways, and posting their judgments—in the form. of a score— online. To some, its an inspiring tool—one thats【C10】______the democratization of influence. No longer must you be a public【C11】______, a politician or a media personality to be【C12】______influential. Social scoring can also help build a personal brand. To critics, social scoring is a brave new technoworld, where your rating could help【C13】______how well you are treated by everyone with whom you【C14】______. Influence scores typically range from 1 to 100. On Klout, the dominant player in this space, the average score is in the high teens. A score in the 40s【C15】______a strong following. A 100, on the other hand, means youre Justin Bieber. On Peerlndex, the average score is 19. A(n)【C16】______100, the company says, is "god-like." Companies are still improving their methodologies—examining through data and【C17】______other networking sites. Industry professionals say its important to focus your digital presence on one or two areas of interest. Dont be a generalist. Most importantly: be passionate, knowledgeable and trustworthy. 【C18】______, scoring is subjective and, for now, imperfect: most analytics companies rely heavily on a users Twitter and Facebook【C19】______, leaving out other online activities, like blogging or posting YouTube videos.【C20】______influence in the offline world—it doesnt count.

【C1】

A．whether

B．unless

C．since

D．that

UML-based tools are often used for J2EE/.NET application analysis and design, both because UML's object orientation is ideal for the J2EE/.NET implementation(66)and because of the expanding scope and complexity of today's enterprise endeavors.(67)the approaches diverge at the coding/implementation phase, a common set of analysis and design techniques applies to both J2EE and.NET.

The use of a virtual machine(VM)architecture is also common to J2EE and .NET. Application development tools(68)intermediate-level code instead of platform-specific binary code, which means the VM interprets that code in real time or performs Just-In-Time(JIT)compilation; the Microsoft VM always runs JIT-compiled code. This VM-based model results in(69)-independent applications and is conducive to the late-binding technique that's(70)to the OO approach.

A．block

B．model

C．module

D．group

Electronic Teaching

The potential of closed-circuit television and other new electronic teaching tools is so great that it is fascinating to visualize "the school of tomorrow"

Televised lessons will originate from a central building having perhaps four or five master studios. The lessons will be carried into classrooms all over a city, or even an entire country.

After a televised lesson has been given, the classroom teacher will take over for the all-important "follow-up" period. The students will ask any troublesome questions, and difficult points will be cleared up through discussion.

The teacher in the classroom will have additional electronic tools. On the teacher's desk, the traditional chalk and erasers will have been replaced by a multiple-control panel and magnetic tape player. The tape machines will run pre-recorded lessons which pupils will follow by headphones. The lessons will be specifically geared to the students' levels of ability. For instance, while the class as a whole studies history, each student will receive an individual history lesson, directed to his particular level of ability.

Should question arise, the students will be able to talk directly to the teacher on individual "intercoms" without disturbing the rest of the class. In this way, the teacher will be able to conduct as many as three classes at the same time.

With the rapid development of computer science, students will be aided with specially prepared multimedia software to study their subjects better. Homework will possibly be assigned and handed in via electronic mail system. Students can even take examinations on their computer linked with the teacher's and get the score instantly. They will get certificates or diplomas if they pass all the required examinations. Experts believe that this type of education will be very popular in the years ahead.

In paragraph one, what does "the school of tomorrow" mean?

A．The school with a central building.

B．The school with four or five master studios.

C．The school with television.

D．The school with televised lessons and electronic teaching tools.

Electronic Teaching

The potential of closed-circuit television and other new electronic teaching tools is so great that it is fascinating to visualize "the school of tomorrow".

Televised lessons will originate from a central building having perhaps four or five master studios. The lessons will be carried into classrooms all over a city, or even an entire country.

After a televised lesson has been given, the classroom teacher will take over for the all important "follow-up" period. The students will ask any troublesome questions, and difficult points will be cleared up through discussion.

The teacher in the classroom will have additional electronic tools. On the teacher's desk, the traditional chalk and erasers will have been replaced by a multiple-control panel and magnetic tape player. The tape machines will run pre recorded lessons which pupils will follow by headphones. The lessons will be specifically geared to the students' levels of ability. For instance, while the class as a whole studies history, each student will receive an individual history lesson, directed to his particular level of ability.

Should question arise, the students will be able to talk directly to the teacher on individual "intercoms" without disturbing the rest of the class. In this way, the teacher will be able to conduct as many as three classes at the same time.

With the rapid development of computer science, students will be aided with specially prepared multimedia software to study their subjects better. Homework will possibly be assigned and handed in via electronic mail system. Students can even take examinations on their computer linked with the teacher's and get the score instantly. They will get certificates or diplomas if they pass all the required examinations. Experts believe that this type of education will be very popular in the years ahead.

In paragraph one, what does "the school of tomorrow" mean?

A．The school with a central building.

B．The school with four or five master studios.

C．The school with television.

D．The school with televised lessons and electronic teaching tools.