题目

阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。 Teenage Brains in the Digital World When it comes to technology, adults won't be able to keep up with their children. It took the radio 38 years to reach 50 million people, but it took only 20 years for the phone to reach the same number, and 13 years for the television. In contrast, it took Facebook 3.6 years. . Over the 15 years, digital communication has brought in more changes than the printing press did in 1570. And those most likely to use them in this world are teenagers, whose brains appear to have an extraordinary capacity to adapt to the world around them., enabling teenagers to keep up with the increasing pace of digital technology and giving them an advantage when it comes to multitasking (多重任务处理). In the US, on average teenagers spend 8.5 hours a day using computers, mobiles, and other devices to learn, interact and play. , such as talking on the phone while you're watching TV. As they stare at these screens, they're taking in and sorting through an incredible amount of information. . YouTube indicates that teenagers all over the world are watching the same clips and laughing at the same joke, indicating that they are more global­minded than teenagers in the past. They may be keen on texting their friends and posting updates on social media sites. . By the age of 30, our brains will become more set in their ways, making it harder for us to adapt and cope with the new technology. A. However, there is a cut­off B. Twitter only needed 88 days C. There are concerns about how to make friends online D. There is an advantage of the growing digital trend E. Having a more flexible brain means certain parts of it haven't developed yet F. This means that the teenage brains can adapt to new technology G. This increases to 11.5 hours if you include all the multitasking that goes on 答案：【1】B【2】F【3】G【4】D【5】A

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