匹配题(冒号前面是题干，后面是匹配段落)

　　45.It is believed: C

　　46.the happiest: D

　　47.some people: J

　　48.Compared with: E

　　49.in the late: H

　　50.the totally: E

　　51.The national index: B

　　52.Some negative : F

　　53.Many: G

　　54.According to: I