wendang 12

发表时间：2012-11-30 阅读次数：992

36. Much of the time, snails keep moving.

37. When it rains, a snail draws its body into its shell.

38. Snails sleep for the whole spring.

39. Good sight helps snails to find food easily.

40. There are over 250 thousand teeth in a snail’s mouth.

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