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Among the many ways in which people communicate through speech, public speaking—also called oratory—has probably received more study and attracted more attention than any other. Politicians campaigning for public office, salespeople presenting products, and preachers delivering sermons all depend upon this form of public communication. Even people who do not make speaking a part of their daily work are often asked to make public speeches: students at graduation or at pep rallies, for instance, or members of churches, synagogues, clubs, or other organizations. Nearly everyone speaks in public at some time or other, and those who perform the task well often become leaders.
Public speaking is not informal conversation between two people—nor is it free discussion in a small group or seminar. Speaking becomes public speaking when a person addresses a group of more than one, without interruption, an
A. always work in groups to prepare speeches for their employers
B. are given credit for the effect of the speech upon the audience
C. usually have no input into the contents of the speech
D. may have indirect influence upon the listeners

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Among the many ways in which people communicate through speech, public speaking—also called oratory—has probably received more study and attracted more attention than any other. Politicians campaigning for public office, salespeople presenting products, and preachers delivering sermons all depend upon this form of public communication. Even people who do not make speaking a part of their daily work are often asked to make public speeches: students at graduation or at pep rallies, for instance, or members of churches, synagogues, clubs, or other organizations. Nearly everyone speaks in public at some time or other, and those who perform the task well often become leaders.
Public speaking is not informal conversation between two people—nor is it free discussion in a small group or seminar. Speaking becomes public speaking when a person addresses a group of more than one, without interruption, an
A. is performed merely by politicians, sales-people and preachers
B. is one of the most important ways communicating through speech
C. is not only an informal conversation but also a free discussion
D. is a kind speaking performed by the public

[单项选择]Among the many ways in which people communicate through speech, public speaking has probably received more study and attracted more attention than any other. Politicians campaigning for public office, salespeople presenting products, and preachers delivering sermons all depend upon this form of public communication. Even people who do not make speaking a part of their daily work are often asked to make public speeches: students at graduation, for instance, or members of churches, clubs, or other organizations. Nearly everyone speaks in public at some time or other, and those who perform the task well often become leaders.
There are many reasons for speaking in public. A public speaker may hope to teach an audience about new ideas, for example, or provide information about some topic. Creating a good feeling or entertaining an audience may be another purpose. Public speakers, however, most often seek to persuade an audience to adopt new opinions, to take certain actions, or to see
A. most of them have been trained as public speakers
B. such activities is prevalent in the society
C. most of them have to do it when they study at college
D. the passage does not mention the reason

[单项选择]Drug use among teens concerns many people in California. Advocates of the "Stop Drugs Now" program, which was piloted in public schools in five California counties last year, argue that the program should be used throughout the state to decrease drug use among teenagers.
Which of the following statements, if true, would most strengthen the argument of the advocates of "Stop Drugs Now" that the program should be expanded statewide ？（）
A. School programs are far less important than parental messages in influencing a teenager’s decision to use drugs.
B. Drug use among teens in the five counties where the "Stop Drugs Now" program was piloted has been dropping steadily for over a decade.
C. Teenagers at the public schools where the "Stop Drugs Now" program was piloted reported higher average levels of drug use than did teenagers at private schools in the same counties where the program was not piloted.
D. There is evidence that teenagers who start smoking at an early age are more likely to experiment with illegal drugs than teenagers who do not smoke.
E. The percentage of teenagers who reported using drugs at the schools where the "Stop Drugs Now" program was piloted dropped more in the last year than in any other year over the last decade.

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