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题型：名词解释
问题：
萃取液
题型：名词解释
Beijing leading schools say “No” to students’ mobile phones.
Three reasons make some leading schools in Beijing discourage middle school students from bringing mobile phones to campus.
First, it is dangerous for children to bring valuable mobile phones along to school for it is possible for them to be lost during physical exercise and other activities and may cause unnecessary trouble to teachers.
Second, mobile phones are bad for students’ studies. Many teachers complain that some students have phone calls in class, disturbing themselves and others.
Third, mobile phones serve as a hotbed for students’ vanity（虚荣）. A new Grade One senior high school student in a leading school asked his parents to buy a 4000-yuan colored-screen mobile phone, which turned out to be his fifth one ever since he entered the middle school.
Most headmasters and teachers in leading schools of Beijing thought that IC telephones on campus have made it very easy for
students to get in touch with others, so middle school students should not bring mobile phones to school at present.
1. According to the passage, without mobile phones, how can the students get in touch with others?
A. By writing letters to each other. B. By sending e-mails.
C. By using IC telephones. D. By no means.
2. Which is NOT the reason that makes the schools say “No” to students’ mobile phones?
A. It is not safe for children to bring mobile phones to school.
B. It may give students a feeling of vanity.
C. It is bad for students’ studies.
D. Most headmasters and teachers don’t want students to bring mobile phones to campus.
3. Why did the new Grade One student ask to buy him the fifth mobile phone since he entered the school?
A. His family had a lot of money.
B. He wanted to show that his family was very rich.
C. His parents loved him too much.
D. The first four mobile phones were all lost.
4. What is the writer’s attitude towards students’ bringing cell phones to school?
A. negative. B. acceptable. C. not mentioned. D. positive.