线路中线曲线圆心向直线的延长线作垂线，垂足与直缓点间的距离称为内移值。
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Joyce thinks ________________.
A. TV programs are not all bad
B. TV programs are a waste of time
C. TV programs are too violent
What is Joyce’s opinion on news reports?
A. They are full of lies.
B. They are superficial.
C. They provide information.
David thinks news reports are________________.
A. a waste of time
B. biased
C. interesting
Which of the following is NOT true?
A. David and Joyce disagree on the role of news reports.
B. David thinks TV has bad effects on children.
C. David thinks if we don’t like the program, we can just switch it off.
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