For questions 1-8, read the text below and decide which answer (А, В, C or D) best fits each gap. There is an example at the beginning (0).
Messages from the Stone Age
The incredible pre-historic Chauvet cave art in France is painted in 0 _____ colours and dates back to a period around thirty thousand years ago when early humans first started to create rock art. Although various 1 of this art have been found in caves in Western Europe, very few people have seen the art at Chauvet because it is located 2 inside an inaccessible underground cave system. Those who have seen it say that it is very impressive, showing animals 3 horses, rhinos and cows, and that the artwork is good enough to 4 modern compositions.
The first scientists to 5 the Chauvet paintings missed some other important 6 however. The walls of the cave are also marked with a series of lines and symbols, that were initially 7 as insignificant. But recent research has suggested that these marks may represent humankind’s first steps towards the development of writing, which is 8 people to rethink their ideas about when written communication first started.