题目内容：
While many countries use the smarter EMV cards，the US still clings to its old magstripe technologv． 参考答案：
答案解析：
单选题：While many countries use the smarter EMV cards，the US still
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- 题目类型：单选题
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A quarter of the world's prisoner population is in America.
A quarter of the world's prisoner population is in America.
Questions 9 to 12 are based on the conversation you have ju
Questions 9 to 12 are based on the conversation you have just heard.A．It is wel
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