C. sensitive ears D. good eyes
25. Why does the author mention bees, ants, toads, and turtles in the last paragraph?
A. To describe some unusual kinds of pets.
B. To measure distances traveled by various animals.
C. To compare their home-finding abilities with those of homing pigeons.
D. To interest the reader in learning about other animals.
答案: 21. A 22. C 23. D 24. B 25. C
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