It could be used in 52 plants by mechanics looking to identify machine parts or by electricians wiring a 53 device.

　　A spokesman for the project said: "A car mechanic for 54 could find at a glance where a part on a certain car model is so that it can be identified and repaired. For the motorist the system could 55 accident black spots or dangers on the road."

　　In other cases the glasses could be worn by people going on a guided tour, 56 points of interest or by people looking at panoramas where all the sites could be identified.

　　[A] allow

　　[B] instance

　　[C] blank

　　[D] industrial

　　[E] frustrating

　　[F] items

　　[G] indicating

　　[H] highlight [I] user

　　[J] complicated

　　[K] white

　　[L] annoying

　　[M] successful

　　[N] articles

　　[O] simple