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。

　　D

　　(2016·洛阳高三模拟)I met my friend when we were in graduate school, and we enjoyed hanging out together outside of class. After receiving our degrees, we both left school to live in different states. That was 10 years ago.

　　We've kept in touch, but our phone conversations and twice­a­year visits became opportunities for my friend to talk endlessly about her problems. When I tried to fill her in on my own life, she obviously ignored.

　　In the past few years I've not visited her at all and been afraid of her occasional phone calls and visits to my house. She invites herself now because I no longer invite her. When she's at my home, she literally follows me from room to room, talking nonstop, until I make an excuse to get away from her. I tell her I need to take a nap, but I don't sleep. I sit in my room and read or enjoy the quiet.

　　Here's the worst part. She and her family, including two young children, are moving to our city. Her family has a small income, and they are buying a house in a grand neighborhood they can't afford. She asked if she and her husband and her children could stay at my home on their trips to our town to deal with house matters.

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