2018年12月四级阅读答案

Passage One—The latest in cat research 　　46,They have a natural ability to locate animals 　　47. Their mastery of cause and effect 　　48. They rely mainy on their hearing 　　49. They focus on what appears odd 　　50. They interact with the physical world much 　Passage Two—Imagine you enter a car 51. People would be driving in a more civilized 　　52. They could enjoy greater mobility 　　53Numerous professional drivers would have to 　　54. Retaining of employees 　　55Enable everyone to benefit fronewte