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Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "

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问题     Australian children are visiting social media websites at an increasingly younger age, a new survey suggests, with one in five "tweens" (children between the ages of about 10 and 14) admitting they have chatted to someone online they do not know.
    The report ’Tweens, Teens and Technology" by online security company McAfee found that children in the tweens age【C1】________of 8 to 12 were【C2】________technology faster than expected, with 67 percent using a social media website.【C3】________the age eligibility for Facebook being 13, one in four (26 percent)【C4】________using the site— although 95 percent said they had their parents’【C5】________to do so.
    The most【C6】________site for tweens was Skype (used by 28 percent),【C7】________children were also using Instagram, according to the survey of 500 youngsters geographically【C8】________of Australia’s online population.【C9】________the survey found that one in five tweens (19 percent) said they chatted to someone online that they did not know,【C10】________seven percent said they had shared personal information.
    Australia’s Communications Minister Stephen Conroy said it was【C11】________that children talk to strangers online. "It shows we must remain【C12】________to online threats," he said. The findings suggest the age at which children first use social media is【C13】________, given a 2012 McAfee survey of teens aged 13-17 found the average age they opened their first social network【C14】________was 13. On average, tweens were using three or four devices that can be Internet【C15】________, with 66 percent of them【C16】________mobile phones and/or tablets. Fifty-four percent said they used a tablet for more than an hour a day.
    Most tweens use their devices to【C17】________the Internet, and on average spend about 1.5 hours a day browsing the web, the survey said. "Both parents and schools are encouraged to keep a close【C18】________on their child’s online behavior to ensure they have safe online【C19】________," said Andrew Little proud, president of McAfee Asia-Pacific. "By working closely with child psychologists, we have seen that online behaviors firmly set in the tween age group so active education is【C20】________within eight to 12 age bracket."
【C15】
选项 A、funded
B、touched
C、enabled
D、confined
答案C
解析 少年儿童能在网上进行聊天等活动的前提条件是他们使用的设备(devices)接通网络。C项enabled有“启用的，允许的”之意，代入句中表示“可连接因特网的”。A项funded“提供资金的”，说这些设备是互联网提供资金的，不符合事实。B项touched“触摸到的”，被网络触摸到的，语义不通顺。D项confined“受限制的”。如果这些设备受到网络限制，就不能实现后面所说的少儿每天平均会花1.5小时上网。
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