单项选择题

Most people who go online have mainly positive experience. But, (1) any endeavor—traveling, cooking, or attending school— there are some risks. The online world, like the (2) of society, is made up of a wide array of people. Most are (3) and respectful, but some may be rude and insulting, (4) even mean and exploitative. Children get a lot of benefits from being online, but they can also be (5) of crime and exploitation in this as in any other environment. Trusting, curious, and (6) to explore this new world and the relationships it brings, children need parental (7) and commonsense advice.
Although there have been some highly (8) cases of abuse involving the Internet and online services, reported cases are (9) infrequent. Of course, like most crimes (10) children, many cases go unreported, especially if the child is (11) in an activity that he or she does not want to discuss with a parent.
The fact that crimes are being (12) online, however, is not a reason to (13) using these services. To tell children to stop using these services would be like telling them to (14) attending school because students are sometimes (15) there. A better strategy would be to instruct children about both the benefits and dangers of cyber space in order that they could better protect themselves in any (16) dangerous situation.
(17) children need a certain (18) of privacy, they also need parental involvement and supervision in their daffy lives. The same parenting skills that (19) to the " (20) world" also works while online.

8（）

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