Directions:In this section, you will hear
3 short passages. At the end of each passage, you will hear some 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).
Passage One Questions 26 to 29 are based on the passage you have just
heard.
A．The number of roles human beings play is much more than that of insects. B．The roles human beings play is more important. C．The insects have fewer opportunities to change their roles. D．Different individual performs different functions in human society but not the case in insect society.