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
Culinary herbs are fragrant plants which are fit to eat and used in small amounts to add flavor to dishes. Mostherbs are found in food and also have medicinal uses. There are four herbs for you.
    
        
            | l    Curry leaves The curry tree is native to India and Sri Lanka. Theleaves are   dark green and shiny, releasing a pleasant nut-like scent when they are fried   in oil. They are a main component ofSouth Indian cuisine, used in the same   way as bay leaves arein Western cuisines.  |                                                                                            | 
        
            | l    Shiso Shiso is a Japanese herb with a unique flavor, whosegreen leaves   are often used as a garnish(装饰) for traditionalJapanese dishes.Whether red   or green,it can be used invarious other ways: mixed into salads, put into   green tea, or added to stir-fries. |         | 
        
            | l    Basil Basil has shiny, deep green, pointed leaves and   asweet-and-savory flavor, which is used in both fresh and driedforms to   flavor dishes ranging from Italian sauces to meatdishes to Asian curries.   When cooking, add it towards the endto maintain flavor. |         | 
        
            | l    Mint Mint has a delicately sweet flavor and creates a distinctcooling   feeling due to the menthol(薄荷醇) in the herb. Used for cooking and a   variety of medicinal purposes, mint has softbright green leaves that are   commonly used in drinks like minttea,as well as dishes like Vietnamese pho   and Thai stir-fries. While dried mint is used in tea making, fresh mint is   thepreferred form of the herb for cooking. |         | 
    
21.Which of the following statement about Curry leaves is true?
A. They are only native to Sri Lanka.
C. They smell pleasant, like fried nuts.
B. They enjoy great popularity among Westerners.
D. They play an important role in South Indian cuisine.
22. Which herbs can be used both in tea drinks and stir-fries?
A. Mint and Basil.                        B. Basil and Shiso.
C. Curry leaves and Basil.                D. Mint and Shiso.
23. Where is the text probably taken from?
A. A biology textbook.                    B. An academic paper.
C.A botanical magazine.               D.A commercial poster.