[单项选择]The five general electronic commerce categories are business-to-consumer, business-to-business, business processes, consumer-to-______, and business-to-government.
A. consumer
B. government
C. business
D. customers

Passage Five
In general, cognitive(认知的) psychologists who study memory, language, and thought see these human behaviors as information processing involving input, processing (coding and storage ), and retrievel (检索). Perhaps the best and most obvious way to describe the information processing view of thought is to compare the human being with a computer. Information is coded and fed into a computer in an organized way. When the computer is asked to produce a part of that information, the machine searches its memory and outputs the information on a screen or prints it out. For example, we might ask for the names of all people hired by a large multinational bank on July 12, 1984. This relatively simple task is equivalent to asking you to search your memory for the names of the first seven presidents of the United States. Then we might ask the computer to tell us who among the workers hired on July 12, 1984, was the most productive. This task is more complex because t

It’s five minutes before the exam and you are in a state of fear. You just have to pass it, but how You didn’t even open the book the night before and you hear a voice in your head saying "Cheat, cheat " So what are you going to do, ignore it and fail or go for it It’s a tough decision many students must make.
Most young people believe that cheating is wrong. However, they have cheated at least once in their high school years. So, why do they do it Are they too lazy to study Perhaps, it’s not as simple as that. According to some experts, one main reason why students cheat is that they see their friends get away with it.
It has never been easier to cheat than it is today. With all the technology available, students needn’t cheat by looking over their shoulders anymore. They use mobile phones to send answers to each other during a test. There is also the Internet, with hundreds of websites giving tips on the art of cheating in
A. it is a matter of failure or success
B. they have never cheated before
C. they didn’t prepare for the exam
D. it is a matter of honesty or dishonesty