There has been a gradual change toward hands-free technology in recent years, particularly in the gaming world. Recently Xbox released the Kinect device, which lets users control their Xbox and play certain games using only their hands, legs and voices. But still, most of these devices have been more of a gimmick than a practical way to use one’s hands to control a mobile device. Johansen said a replaceable filter（滤光器）would be a cheapconvenient way for most consumers.

　　And even as companies like The Eye Tribe work to create such a product for the average user, making the eye-controlled technology more accessible and less expensive will have similar benefits for physically disabled users.

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　　．Which of the following is the main idea of the passage?

　　AAn introduction of eye-controlling technology．

　　B An introduction of a new device.

　　C. An introduction of smart-phones.

　　D. An introduction of a new technology for the disabled.

　　68．The underlined word “gimmick” probably means .

　　A. a way

　　B. a trick

　　C. a lie

　　D. a dream

　　69．According to the passagewe can learn that ___________.

　　A. the eye-controlling technology was first developed for the blind

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