Questions 19 to 21 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.
    19.
  • A Scientists tried to send a balloon to Venus.
  • B Scientists discovered water on Venus.
  • C Scientists found Venus had atmosphere.
  • D Scientists observed Venus from a space vehicle.
    20.
  • A It resembles Earth in many aspects.
  • B It is the same as fiction has portrayed.
  • C It is a paradise of romance for alien life.
  • D It undergoes geological changes like Earth.
    21.
  • A It might have been hotter than it is today.
  • B It might have been a cozy habitat for life.
  • C It used to have more water than Earth.
  • D It used to be covered with rainforests.