Passage TwoQuestions 19 to 21 are based on the passage you have just heard.[音频]
A. They avoid looking at them.
B. They run away immediately.
C. They show anger on their faces.
D. They make threatening sounds.
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Question 20[音频]
A. It turns to its owner for help.
B. It turns away to avoid conflict.
C. It focuses its eyes on their mouths.
D. It looks away and gets angry, too.
Question 21[音频]
A. By observing their facial features carefully.
By focusing on a particular body movement.
C. By interpreting different emotions in different ways.
D. By taking in their facial expressions as a whole.
Passage ThreeQuestions 22 to 25 are based on the passage you have just heard.[音频]
A. They have to look for food and shelter underground.
B. They take little notice of the changes in temperature.
C. They resort to different means to survive the bitter cold.
D. They have difficulty adapting to the changed environment.
Question 23[音频]
A. They have their weight reduced to minimum.
B. They consume the energy stored before the long sleep.
C. They can maintain their heart beat at the normal rate.
D. They can keep their body temperature warm and stable.
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