〔R43〕 My first is chiefly made of stone,
My second grows on trees.
I am edible, unlike a pine cone,
But you do not cook me as you do peas.
〔译注〕 我的第一部分主要是石头做的，
我的第二部分长在树上。
我可以吃，不像松的球果，
但你不会烹煮我，像你烹煮豌豆一般。
〔提问〕 If I am something you must crack before you
eat me, what am I?
〔谜底〕
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