(单选题)
What can we know about sweet potatoes from the passage?
A.Sweet potatoes were first found in Africa.
B.The family of sweet potatoes includes yams.
C.Sweet potatoes are from American countries.
D.Sweet potatoes are closely related to lilies.
参考答案：C
参考解析：
细节理解题。根据第二段“First Found in American Countries.”可知红薯起源于美洲国家，而不是非洲，所以A项错误；C项正确。根据第三段第一句“They’re in the family of plants that includes morning glories（牵牛花）and are in a different family than yams（山药）”可知红薯属于包括牵牛花的植物科，与山药属于不同的科，所以B项错误；根据第三段第二句“Yams are from Africa and are more closely related to lilies（百合花）”可知山药与百合关系更密切，而不是红薯，所以D项错误。故选C。
知识点：
返回顶部