Questions 9 to 12 are based on the passage you have just heard.

Directions: In this section, you will hear two 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.

  • A Learning others' secrets.
  • B Searching for information.
  • C Decoding secret messages.
  • D Spreading sensational news.
  • A They helped the U. S. army in World War Ⅱ.
  • B They could write down spoken codes promptly.
  • C They were assigned to decode enemy messages.
  • D They were good at breaking enemy secret codes.
  • A Important battles fought in the Pacific War.
  • B Decoding of secret messages in war times.
  • C A military code that was never broken.
  • D Navajo Indians' contribution to code breaking.