C．To offer readers information about a talent show.

　　D．To appeal to adults to make contributions to society.

　　解析：选B　写作目的题。本文介绍了Verizon Innovative App Challenge大赛的目的、如何报名参加、比赛的主要流程等内容。因此这篇文章的目的是邀请青少年参加这个比赛。

　　.阅读七选五

　　How to Be a Good Friend

　　A good friend, who wouldn't want one? Ever felt yours just not good enough but don't know where to improve? __1__ I used to annoy a lot of my friends before, just for the sake of having fun and from that, I've learned how to be a good friend, and stay as a good friend.

　　Listen.

　　No one likes being interrupted when they're talking. So, when someone talks, keep yourself quiet and listen to them, especially if they're feeling down, you need to be the shoulder for them to cry on. If you have any comment to make, be sure that you word it in a way where you don't sound too negative. __2__ When you just don't share the same interest or you're not in the mood to listen to them, politely let them know and ask them to understand.

　　Always smile.

　　__3__ The least you can do is, whenever you see your friends, smile and say hello. That way, if they had a bad day, you can make them feel better with your smile along with your ear, and maybe, you can share something funny to cheer them up.

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