二年级附加题：难住很多同学，原来可以这样解答 

欢迎来到我频道，我会分享很多有趣知识，希望大家喜欢，如果喜欢我的频道欢迎订阅哦！期待你们的到来！
Welcome to my channel, I will share a lot of interesting knowledge. I hope everyone likes it. If you like my channel, please subscribe! Looking forward to your arrival!