7 137 Listen to a conversation and choose the correct words. 1 Harry is with Lily / Mark 2 They are at the park / a café. 3 There's a film / music festival there. 4 He's having a terrible / fantastic time. 5 The weather is very cold / hot. 6 They can meet at four / five o'clock.

The world of science doesn't have a bordres. We live in a world where discoveries are make constantly. There are many scientists . For example The great law of gravitation was discovered by Isaac Newtone. Radio was discovered by Alexander  Popov. Russian chemist Mendeleev invented the Periodic Table of Elements in 1869. Every time when scientists make discoveries we understand that we are just a speck in the huge world. The more of discoveries, the more questions. Consequently the world of science doesn't have a borders.