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
Article Contest—Teens Making a Difference!
No matter your age or what your life is, you can always make a difference. Teen Ink knows this, and so does Natalie Silverstein—author of SimpleActs: TheBusyTeen'sGuidetoMakingaDifference! For this contest, we want to know what simple acts you've done to make a difference! Please click here for online registration.
Follow all rules carefully to prevent disqualification.
Rules：
You must be a teen (aged 13—19) with a Teen Ink account to enter.
Submissions (提交) must relate to the topic (Teens Making a Difference).
Articles must be between 250～350 words.
Deadline: December 31 this year.
Guidelines and Details：
There's no size limit to an act of kindness—it doesn't matter how big or small your act of kindness is, we want to hear about it!
There is no limit to the number of pieces you can submit.
How to Submit：
Submit entries through our website. Other forms of submission will not be accepted. All entries submitted to Teen Ink are automatically (自动) considered for the contest.
Must include the words “Article Contest” in your submission's tags (标签) and title.
Prizes：
Winner and honorable mentions will have their articles published in Teen Ink magazine. Overall winner will receive a copy of Natalie Silverstein's book, SimpleActs: TheBusyTeen'sGuidetoMakingaDifference and a $25 Amazon gift card.
21．Where is this text probably taken from?
A．A guidebook. B．A webpage. C．A book review. D．A news report.
22．Which of the following will result in disqualification?
A．Mailing your entry. B．Writing a 320word article.
C．Submitting 2 entries. D．Uploading your entry on November 28.
23．What is the prize for each honorable mention winner?
A．They'll get a gift card.
B．They'll be presented with a book.
C．Their articles will appear in a magazine.
D．Their works will be recommended by Natalie Silverstein.
