CLOSE TEST READING (TEST 1,2,3,4,5) P.3

How do we choose the signs and symbols which we use each day? Just imagine if green and red, (32)_____ are used for traffic lights, were replaced with purple and pink.

They'd work just the same ,so why have been fixed on red as the colour of warning signals and things like that? Of course, when it comes to fashion, humans (33)______ their choice of colour quite freely.

Colours for cars change from year to year too. In spite of all this variation there are one or two psychological facts that never change. (34)_______ , humans perceive things that are yellow or red being nearer than things of any other colour.

This is important in road safety (35)_____ . It means that motorists treat an oncoming red or yellow car with extra caution.

Whereas they might try to (36)______ in a blue car’s path, they will wait if the ongoing car is one of those danger colours-red or yellow.