It is greatly            that Arthur gave back the money he found. [      ]

A. in his credit    

B. to his credit 

C. at his credit   

D. with his credit

近年来，道德现象高频“出镜”。一方面表现为媒体对道德问题的关注度和民众对道德失范的痛恨度“居高不下”；一方面表现为一批批草根“道德英雄”、无名志愿服务者等“最美”人物纷纷闪亮登场。这说明（）

①人们对髙尚道德有强烈的渴求

②道德力是国家硬实力的基础

③思想道德建设需大力加强

④道德滑坡危及人类存亡

A.①②

B.①③

C.②④

D.③④