A. GIFTS B. INVITATIONS C. OFFERS D. SITUATIONS*READ THE FOLLOWING...

27. A. gifts B. invitations C. offers D. situations*Read the following passage and mark the letter A, B, C or D to indicate the correct answer to each of thequestions.THE VANISHING INVENTIONIn 1998, a Valencian professor made an amazing claim. Professor Antonio Cervilla discovered how to usewater as a substitute for petrol. The scientist said that you could drive from Bilbao to Valencia on just half a litreof water. His invention uses a molybdenum compound to break down water into hydrogen and oxygen. Unlikeother methods, no electricity is required and the reaction happens at atmospheric temperature. This impressivetechnology is based on the way plant enzymes break down water. The use of molybdenum is the perfect choicebecause, although rare, it is cheap and found all around the planet.Since the claims were made, nothing more has been heard about this fabulous technology. There is noexplanation for the disappearance anywhere on the Internet, apart from a list of similar inventions which have alsovanished. An inventor from the Philippines called Daniel Dingel developed a water- fuelled car but was arrestedand sentenced to 20 years in prison. If this technology were to become widely available, it would prove disastrousfor petrol station owners and would also save the planet from the impending environmental catastrophes.