阅读下列短文，从每题所给的A、B、C、D四个选项中选出最佳选项。
A
POETRY CHALLENGE
Write a poem about how courage, determination, and strength have helped you face challenges in your life.
Prizes
3 Grand Prizes: Trip to Washington D．C.for each of three winners, a parent and one other person of the winner's choice.Trip includes roundtrip air tickets, hotel stay for two nights, and tours of the National Air and Space Museum and the office of National Geographic World.
6 First Prizes: The book Sky Pioneer: A Photobiography of Amelia Earhart signed by author Corinne Szabo and pilot Linda Finch.
50 Honorable Mentions: Judges will choose up to 50 honorable mention winners, who will each receive a Tshirt in memory of Earhart's final flight.
Rules
Follow all rules carefully to prevent disqualification.
■Write a poem using 100 words or fewer.Your poem can be any format, any number of lines.
■Write by hand or type on a single sheet of paper.You may use both the front and back of the paper.
■On the same sheet of paper, write or type your name, address, telephone number, and birth date.
■Mail your entry to us by October 31 this year.
语篇解读：本文是一篇应用文。这是一则诗歌比赛的参赛须知，就比赛宗旨、奖项设置和参赛规则给出了相关信息。
21．How many people can each grand prize winner take on the free trip?
A．Two. B．Three.
C．Four. D．Six.
解析：选A 细节理解题。根据Prizes部分的3 Grand Prizes中的“for each of three winners，a parent and one other person of the winner's choice”可知，对特等奖获得者来说，他可以带一名家长和另一个人参加这次免费的旅行，故选A。
22．What will each of the honorable mention winners get?
A．A plane ticket.
B．A book by Corinne Szabo.
C．A special Tshirt.
D．A photo of Amelia Earhart.
解析：选C 细节理解题。根据Prizes部分的50 Honorable Mentions中的内容可知，评委选出的50名荣誉奖获得者会获得一件T恤衫。
23．Which of the following will result in disqualification?
A．Typing your poem out.
B．Writing a poem of 120 words.
C．Using both sides of the paper.
D．Mailing your entry on October 30.
解析：选B 细节理解题。根据Rules部分的第一条规则可知，参赛作品不得超过100词，所以B项中提到的“一首120词的诗作”是违规的。
