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Blu – ray  was first commercially _______ in 2006 and it uses a blue laser to read or write data to a disc.

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3-D _______ is used to produce complex tools and components.

Retinal implants are meant to partially restore vision to people who have lost their _____.

Choose one word in each group that has the underlined part pronounced differently from the rest.

It is thought that

Google ______ cars may transform the way we move around cities in the future.

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In less than a decade, you will carry a_______laser pen capable of sealing wounds.