21. What is How It Feels to Float mainly about? A. girl's space adventures. B. Challenges of growing up. C. The murder of a teenage girl D. An old woman's happy life. 22. What kind of book is Tio Can Keep a Secret? A. A fairy tale B. A love story.所有C. mystery storv完 D. science-fiction story. 23. What do Forest of a Thousand Lanterns and Dune have in common? A. Both are one of a book series. B. Both have an authentic setting. C. Both have been adapted to movies.D Both involve secking magie power.