Questions 16 to 18 are based on the recording you have just heard.

Directions: In this section, you will hear three recordings of lectures or talks followed by three or four questions. The recordings will be played only once. After you hear a question, you must choose the best answer from the four choices marked A), B), C) and D). Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.
  • A Build a machine that can detect lies.
  • B Develop a magnetic brain scanner.
  • C Test the credibility of court evidence.
  • D Win people’s complete trust in them.
  • A They are optimistic about its potential.
  • B They are sceptical of its reliability.
  • C They think it is but business promotion.
  • D They celebrate it with great enthusiasm.
  • A It is not to be trusted at all.
  • B It does not sound economical.
  • C It may intrude into people’s privacy.
  • D It may lead to overuse in court trials.