1A 7


In pairs. Choose the correct words from 5 and 6 to complete the sentences.


a He gave a very clear b Scientists


every year.


c The increase in the number of storms is strong climate change.


d The e Doctors life on other planets.


f Newton developed the natural phenomena.


g We use a barometer to


the effects of new drugs to see if they are effective. of gravity by observing


air pressure. h Copernicus used a mathematical model to that the Earth 8


revolves around the Sun. 1.1 Listen to the people talk about the big questions in 4 again.


Answer the questions by completing the table. Tick the correct speaker.


a Which speakers give an objective answer? b Are their answers supported by evidence? c Do the speakers give a clear, logical explanation?


Objective


Speaker 1 Speaker 2 Speaker 3 Speaker 4


9


How many ways can you think of to prove that the Earth is round? Explain your proof using evidence and a logical argument. There’s a clue on page 12.


14 English for the 21st Century • Unit 1 Supported by evidence Clear and logical of done by scientists suggests that there probably is about the way radiation works. that the Earth gets 50,000 tonnes lighter C21 SKILLS


COMMUNICATION: Objective and subjective arguments


When we present a theory or idea we should be objective, that is, we should discuss both sides of an argument equally. Giving only a subjective view does not give other people a chance to make their own decisions.


>> Do the exercises on page 20.


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