解析：选D　这里是指作者"也是"一个无线电爱好者。

　　15．A.informs B．limits

　　C．preserves D．follows

　　解析：选B　Jaymac腿脚不便，残疾在身体上"限制"了他。

　　16．A.polish B．create

　　C．meet D．support

　　解析：选C　作者可以通过无线电"认识"外面的世界。

　　17．A.talks B．agreements

　　C．doubts D．debates

　　解析：选A　通过无线电作者可以跟世界上别的无线电爱好者"说话"。

　　18．A.worry about B．look at

　　C．care about D．laugh at

　　解析：选B　这里是指可以通过两种方式来"看待"生活。

　　19．A.sleep B．step

　　C．feed D．focus

　　解析：选D　第一种方式是把目光"集中"在好的、积极的事情上面。

　　20．A.self­pity B．confidence

　　C．shock D．joy

　　解析：选A　而第二种是只关注那些消极的东西，在自怜自艾中哭泣，故选A项。

　　Ⅱ.阅读理解

　　My dad, Elvin Elliott, always loves farming. Even though he turns 82 this year, he'll be out on the tractor this summer, happily making hay for his 50 beef cows.

　　Last year I took a vacation day from work to shoot photos of Dad and my brother Terry, who takes time off every year to help with making hay. Terry says it's still a vacation for him because he enjoys being out in the fresh air, driving a tractor and helping Dad. As I watched Dad work with Terry, I thought how lucky I was to grow up on our farm.

　　My mom, Uzelia, was a city girl, but she supported Dad's dreams and became his best farmhand. They started in 1961 on a rented farm, tending 18 acres of tobacco and milking 18 cows. In 1975 they bought their own farm, and eventually milked as many as 130 Holsteins.

　　It was my job to drive the cows to the barn and bottle­feed the baby calves. Sometimes I'd have as many as 15 calves - and they all wanted to be fed at the same time. I used to tap them lightly on the nose with a stick. Before long they all knew to wait their turn. I would feed two, and when they finished, two more would come up.

My favorite haymaking memories are of break time, when we'd get "square nabs" peanut butter crackers and a Coke.