p = p.next; // 指针后移，易错点2：忘记移动指针会导致死循环
cursor.execute(
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5) What’s the connection between NFTs and cryptocurrency?Non-fungible tokens (NFTs) aren't cryptocurrencies, but they do use blockchain technology. Many NFTs are based on Ethereum, where the blockchain serves as a ledger for all the transactions related to said NFT and the properties it represents.5) How to make an NFT?
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