题目

请阅读下面文字，并按照要求用英语写一篇150词左右的文章。Text 1A:How do you find digital payments？B. Listen up! My answer lies in the questions. Who needs cash to buy stuff when you have a card？Why stop at a bank when your phone has the cash？Who needs a wallet when you can have an c-wallet？Or who needs a smart-phone when you are smart？Text 2A:Are you ready to accept a cashless world？B:Truth to tell，I am not sure. Listen to Hema's story，. Hema Fresh，the supermarket chain brand of Alibaba Group，whose type of retail is characterized by its cashless natu8．DNA分子结构的发现，标志着生物学研究进入了下列哪一阶段（　　）A．观察阶段B．实验阶段C．分子生物学阶段D．调查阶段