1.Answer based on your opinion on the convenience of using coins. 2.You can discuss factors such as ease of carrying, usage in transactions, and comparison with other forms of currency like digital payments or paper money.

1. 根据您对使用硬币便利性的看法进行回答。 2. 您可以讨论诸如携带的便利性、交易中的使用以及与其他货币形式（如数字支付或纸币）的比较等因素。