[A]devices [B]instruments [C]readers [D]examiners

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[A]devices [B]instruments [C]readers [D]examiners

参考答案:

C本题考查名词词义的辨析。空格填入的名词与for IC cards 搭配,与magnetic systems(磁系统)作比较。首先排除[D]项examiners“主考者,检查人”,因为人和系统之间无法比较价格高低。[A]项“装置,设备”、[B]项“工具,手段”的用法为device/instrument for doing sth,如a device for opening bottles(一个打开瓶子的装置);an instrument for writing(书写工具)。所以[C]项readers正确,