Passage Three

　　Questions 22 to 25 are based on the passage you have just heard.

　　22. A.Characteristics of sand.

　　B.How animals live in the desert.

　　C.A snake's special way of moving:

　　D.Techniques of skiing.

　　23. A.To climb hills.

　　B.To gain traction.

　　C.To fool its enemies.

　　D.To rest as it moves.

　　24. A.Wavy lines.

　　B.Circular lines.

　　C.Perpendicular lines.

　　D.Parallel lines.

　　25. A.Lower body temperatures.

　　B.Decreased energy consumption.

　　C.Greater ability to conceal itself.

　　D.Wider range of vision.