2019年6月四级真题(第二套)

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

Directions:In this section, you will hear three passages. At the end of each passage, you will hear three or four questions. Both the passage and the questions will be spoken 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.
    16.
  • A It has kept growing over the centuries.
  • B Its top is hidden in clouds of volcanic smoke.
  • C Its height changes with each volcanic eruption.
  • D It has a recorded history of 1500 years.
    17.
  • A They are now a tourist destination.
  • B They attract a lot of migrating birds.
  • C They provide shelter for the farmers.
  • D They make good fields for farming.
    18.
  • A They nest on the volcano's slopes.
  • B They feed on certain small mammals.
  • C They compete with each other for food.
  • D They match large mammals in strength.