人工环境不包括( ) A.一幢幢高大的城市建筑物 B.都江堰 C.南方低山丘陵区的“红色荒漠” D.喜马拉雅山上的高山草甸 答案:D 人工环境指人类在天然环境基础上,经长期社会劳动所创造的,须由人类介入才能维持的环境。 Although medical science________control over several dangerous diseases,what worries us is that some of them are recurrent.A.achievedB.has achievedC.will achieveD.had achieved