A．switc
B．batter
C．speake
D．built－in chi
参考答案A
解析:事实细节题。对于新问世的信用卡的特点，新闻中继续谈到“The card is apparently the first to put a voice recognition chip，a microphone，speaker and a battery into a credit card．”，可见它具有选项[B]、[C]和[D]中提到的装置，而没有选项[A]switch“开关”。
语音识别技术成为信用卡防欺诈的新手段，语音激活的信用卡具有内置的识别芯片与麦克风，用户必须通过语音输入密码进行验证，即使窃贼盗得信用卡甚至密码也难以进行盗刷，其用途定位于卡失窃以及互联网在线认证环境。
语音识别技术成为信用卡防欺诈的新手段，语音激活的信用卡具有内置的识别芯片与麦克风，用户必须通过语音输入密码进行验证，即使窃贼盗得信用卡甚至密码也难以进行盗刷，其用途定位于卡失窃以及互联网在线认证环境。
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