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
The Horn Book Magazine
The Horn Book Magazine is one of the most famous resources in the field of children's and young adult literature.
Want to write for the Magazine?
We are always on the lookout for good magazine articles and welcome your submissions (note: reviews are assigned in-house). Submissions must be original, unpublished works. Articles should be of a critical nature on some aspect of children's literature and should be no longer than 2, 000 words; contributors are advised to have a familiarity with The Horn Book Magazine. Submissions may be sent by email to magazine@hbook.com. They can also be mailed to: The Horn Book Magazine, 300 The Fenway, Palace Road Building, Suite P-311, Boston, Massachusetts 02115.
Find us online
Check our website for special web-only features. Visit hbook.com/category/news / for links to new reviews, articles, booklists, events, awards, and more.
The Horn Book's blog Read Roger reports on publishing news; our Out of the Box blog takes a look at what comes into the Horn Book offices, covering books not reviewed in our publications. At Calling Caldecott, you will find conversation centered on the Caldecott Medal. Lolly's Classroom features teachers talking about using trade books in the classroom.
Blowing our own horn
To subscribe to the Horn Book's publications, visit hbook.com/subscriber-info. You can also reach us by phone at 1-877-523-6072 (U.S.) or 760-317-2335 (outside the U.S.); by email at hbmsubs@pcspublink.com.
Back issues are available for sale, but supplies are limited. To order back issues, write to The Horn Book, Inc., 7858 Industrial Parkway, Plain City, Ohio 43064. Call 866-270-9072.
21. What do we know about readers' submissions?
A. They can be a book review.
B. They can be a published article.
C. They should be longer than 2,000 words.
D. They should focus on children's literature.
22. Which blog offers publishing news?
A. Read Roger.
B. Out of the Box.
C. Calling Caldecott.
D. Lolly's Classroom.
23. How can readers buy back issues?
A. By calling 866-270-9072.
B. By sending emails to magazine@hbook.com.
C. By visiting hbook.com/category/news/ for a payment link.
D. By writing to The Horn Book Magazine's address in Boston.
