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阅读下面两篇短文,根据短文内容,从A、B、C三个选项中选出可以填入空白处的正确答案。

    Now people can pay by scanning (扫描) their faces while shopping. Is it 1 to pay by scanning other parts of our bodies? Amazon has a new technology that scans 2.

    The technology can tell if the person is the right one by scanning his or her hand. The scanner examines things such as finger prints. It then sends a picture to a certain center which can decide who the person is.

    In September 2019,Amazonmade a payment system for a US supermarket. People can pay3 by scanning their hands under a machine. Their hand scan is connected to their bank cards, so they can pay successfully. It's quite convenient, especially for 4 people. With this new technology, people 5take their cards with them. They just scan their hands.

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