简答题Who might the speaker be?简答题n the future, do you think most people will live longer or shorter lives?简答题What have they learned?简答题Guess: Are the statements below true or false?简答题What does the research show? Read the sentences below. Then listen again and write the correct letters (a–h) in the table below. Two answers below are extra.简答题Fill in the gaps with words given in the box. Change the form where necessary.简答题There is a saying in English that “an apple a day keeps the doctor away.” What do you think this means?简答题What is the speaker mainly talking about?简答题What things do you do to stay healthy? What things do you avoid?简答题What are scientists studying?