根据以下材料，回答下面试题
　　Only moments after announcing a policy of zero tolerance on cellphone(手机 ) use in the classroom, Ali Nazemi heard a ring. Nazemi, a business professor at Roanoke College in Virginia, took out a hammer and walked towards a young man. He smashed the offending device.Students' faces turned white all over the classroom.
　　This episode reflects a growing challenge for American college teachers in, as the New York Times puts it, a "New Class (room) War:Teacher vs.Technology". Fortunately, the rehashed-phone incident had been planned ahead of time to demonstrate teachers' anger at inattentive students distracted by high-tech devices.
　　At age 55, Nazemi stands on the far shore of a new sort of generational divide between teacher and student. The divide separates those who want to use technology to grow smarter from those who want to use it to get dumber. Perhaps there's a nicer way to put it. "The baby-boomers seem to see technology as information and communication," said Michael Bugeja,the author of Interpersonal Divide : the Search for Community in a Technological Age. "Their children seem to see the same devices as entertainment and socializing."
　　Bugeja's online survey of several hundred students found that a majority had used their cell phones, sent or read e-marl, and logged onto social-network sites during class time. A quarter of the respondents admitted they were taking the survey while sitting in a different class.
　　The Canadian company Smart Technologies makes and sells a program called
　　SynchronEyes.It allows a classroom teacher to monitor every student's computer activity and to freeze it at a click. Last year, the company sold more than 10,000 licenses.The biggest problem, said Nancy Knowlton, the company's chief executive officer, is staying ahead of students trying to crack the program's code."There's an active discussion on the Web, and we're monitoring it."Knowlton said. "They keep us on our toes."
　　第16题 Prof. Nazemi smashed the student's cellphone with a hammer because_____.
　　A.students in his class didn't listen to his announcement
　　B.he hated new gadgets such as cellphones
　　C.he no longer tolerated cellphone use in the classroom
　　D.he wanted to show how distractive the cellphone was
　　第17题 According to the passage high-tech devices can makeyoungsters_____.
　　A.more intelligent B.more stupid
　　C.study more easily D.get more information
　　第18题 "The babyboomers" in Paragraph 3 probably refers to_____.
　　A.the generation of people like Ali Nazemi
　　B.the generation of people like Ali Nazemi's students
　　C.the very young babies
　　D.the people who were born in the 1980s
　　第19题 The biggestproblem for the Canadian company Smart Technologies is_____.
　　A.students may soon decode their program SynchronEyes
　　B.whether they have the right to allow teachers to monitorstudents
　　C.they must sell the program without the students' knowing ofit
　　D.they have to discuss whether the SynchronEyes is useful onthe Web
　　第20题 The best title of this passage is probably_____.
　　A.Different Opinions Between Teachers and Students
　　B.Classroom Chaos over Gadget Use
　　C.The Development of Classroom Wars
　　D.Keep Us on Our Toes

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