阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
A
Coolest Bookstores in the World
Where did you buy your last book？Chances are that you bought it on the Internet.But if you did, you missed the remarkable experience of browsing in a real bookstore.These days bookstores offer lots of great books and plenty more.
Eslite Dunnan Store
TIMEMagazine once named Eslite Dunnan Store in Taiwan province, China “Asia's best bookstore”．One visit to the store tells you why.The store, spread across five floors, offers a combination of restaurants, music and over 200，000 books.With its comfortable reading spots, visitors sometimes say it's like a library.Others have called it the “7Eleven of bookstores” because it's open 24 hours a day.
Book Garden
The world's biggest bookstore is Tehran, Iran's Book Garden with 700，000 square feet of space.In addition to restaurants and a theater, the Book Garden features a park on the roof.Visitors can pick up one of 1，000 free books to read while enjoying the fresh air and sunshine from the Book Garden's rooftop park.
Saraiva Bookstore
Rio de Janeiro's Saraiva Bookstore might be the world's most colorful bookstore.The visible upper level is lined with books arranged by their colors.This rainbow effect provides a color welcoming for shoppers as they arrive.A rainbow path also leads young readers into the children's section.
Liberia Acqua Alta
Venice, Italy, is a city surrounded with water.Its books are displayed in all things related to water such as boats, bathtubs to protect them when the shop floods during high tide.It overlooks one of Venice's many canals, and the smell of old books fills the air.
21．Which bookstore provides a special reading place on the roof?
A．Eslite Dunnan Store. B．Book Garden.
C．Saraiva Bookstore. D．Liberia Acqua Alta.
22．What do we know about Saraiva Bookstore?
A．It is open twentyfour hours a day. B．Shoppers can paint books with color.
C．It greets people with colorful books. D．Shoppers can find a rainbow there.
23．Why are the books in Liberia Acqua Alta kept in boats?
A．Because the store is known for floods. B．Because they match canals in Venice.
C．Because the store is surrounded with water. D．Because they can be preserved from water.
