Accordingtothepassage，whatisonedisadvantageofskyscrapersthathavemirroredwalls?
A.Theexteriorsurroundingairisheated。
B.Thewindowsmustbecleaneddaily.
C.Constr uctiontimeisincreased.
D.Extr aair-conditioningequipmentisneeded.
正确答案：A[解析]见第三段最后一句话，“装有镜面墙的摩天楼会加热它周围空气的温度，也会影响周围的建筑物”。
