A False news stories are worse than deep fake videos. B Deep fake videos may acquire the credible appearance. C Deep fake videos always present things that have occurred. D Specialists can easily identify deep fake videos.

A support B generate C create D undermine

A The media industry need not take them seriously at present. B Most of them are far more perfect now. C It is hardly easy to tell whether they are artificial. D Some of them are persuasive at the first glance.

A carefree B pessimistic C anxious D confuse

A The Political Influence of Fake Videos B Strategies to Address Fake Videos C Looming Threats of Fake Videos D The Prevailing Dangers of Fake Videos

A Because it had a striking and alarming effect. B Because it can reflect the environment to its user. C Because it can be used to negotiate the world aroud them. D Because the white cane has had its day.

A Blind people depend on their devices to a great extent. B The sounds can alert wearers when obstacles are encountered. C The sound to express signals interferes with the user's hearing. D It's a good approach to add sounds to devices.

A a particular profession B a vibrating device C a three-dimensional image D sounds with specific meanings

A Dr. Rus's new devices will completely replace canes B Dr. Rus's new system helps users walk around without collisions C Dr. Rus's new system can guide directions and perform specific tasks D the belts warn a wearer when he is on a collision course with an obstacle

A It has been upgraded in 1921. B It completely imitates the design of white canes. C It needs further improvement. D It is slightly inferior to James Biggs's invention.