Native to the US, pygmy rabbits weigh less than 1 pound and live in the American West. They are believed to be the smallest rabbits in the world. Their habitats have been destroyed by development. Several populations, such as the Columbia Basin pygmy, almost went extinct and were saved by zoo breeding programs. Pygmy rabbits also rely on winter cover by digging tunnels through the snow to escape predators, but lesser snowfall is leaving them exposed.

　　All of this gives new meaning to dressing up in a giant bunny costume this Easter.

　　41 The writer mentions Easter at the beginning of the passage in order to_______.

　　A. show the importance of Easter Day B. introduce the issue about bunnies

　　C. remind people of Easter traditions

　　D. discuss the relationship between Easter and bunnies 42. The word "culprit" ( Paragraph 2) is closest in meaning to______.

　　A. criminal B. judge C. victim D. producer

　　43. According to the passage, some rabbits can now be easily Uncovered by predators because they_______

　　A. are exposed lo more skillful hunters

　　B. have moved to habitats with fewer plants

　　C. haven't adapted themselves to climate change

　　D. can't change their fur color into white in the fall and the spring

　　44, The problem faced by volcano rabbets and rock rabbits is that________.

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