Read the text in 3 again and answer the yes/no questions. a Does everyone think we lead healthy lives now?
b Is working in an office now more dangerous than working in a factory 50 years ago? c Are air pollution levels lower now than 50 years ago? d Do more people die from diseases now than 50 years ago?
Units 9 & 10
5
Put these stages of thinking creatively in the correct order (1–5).
Evaluate each alternative. Define the problem. Choose the most effective solution. State your goal. Think of possible alternatives.