1. The words "Youth Summit" refer to______.
A. visits to the Nixon Library
B. the Chinese students' visit to the U. S.
C. a meeting discussing relations between China and the U. S.
D. activities to strengthen the ties between the Chinese and American students
2. The student from Shanghai thought about the time 25 years ago because it was when Nixon ______
A. died
B. visited China
C. became U. S. president
D. started building the library in his name
3. The text is mainly about ______.
A. the China-U. S. relations
B. the Nixon Library
C. President Nixon
D. The Youth Summit
C
Targ Targeting teens
Using the web makes teens a target. Posting too much personal information for those millions of cyber eyes to see can cause some big problems and can even invite a thread to your life.
As Mary learned, not everyone on the Internet is who he or she says they are. Adults will sometimes pose as other teens, posting fake photos and nice messages to gain trust. They use their fake identity to access the personal information of others, such as home address, phone number, or school name.
“That’s not the most common scenario(一系列可能发生事件),” says David Finkelhor , a sociology professor at the University of New Hampshire. “Only 3 percent of teens aged 10 to 18 who use the Internet report being asked to meet offline. But the danger is real.”
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