38. D.　 根据第三段最后一句话“Because they can hear and watch, too.”可得出答案D。

37. C. 根据第三段的句子“You can see a lot and learn a lot”和对整篇文章的理解，可推断出答案为C。

36. D. 根据第一段的句子“TV brings the outside closer (close adv.接近地) to people’s homes. Some people say the world is smaller than before - because of TV”，可知答案为D。

35. C. 在课文提到的动物有：fox, frog and tortoise，故答案为 C。

C

34. A. 根据生活常识和短文最后的句子“Now the tortoise is swimming in the river happily and laughing at the fox”可推断出答案为A。

33. D. 根据第二段的句子“Just at that time a tortoise comes up and sees all this . He goes up quickly and bits the fox’s tail” 可知答案为D。

32. B. 根据生活常识可作出回答B。

31. C. 根据第一段的内容可知答案为C。

30. D. 根据句子“some students like to eat junk food, especially Sally. What’s worse is that she doesn’t like to exercise, so she is very fat”可知答案为D。

B

29. A. 根据句子“He goes to the swimming club three times a month in winter”可知答案为A。