A-A+
A.The building method the builders use to save
问题详情
A.The building method the builders use to save energy.
B.The limit of the flow of air between inside and outside.
C.The use of man-made building materials.
D.The limit of air-flow and the man-made materials.
参考答案
正确答案:D
解析:细节题。短文提到,建筑者们为了不浪费能源,他们建造能限制室内与室外之间的空气流动的建筑物,他们还开始使用人造建筑材料。据目前所知,这些材料会释放出有害气体。正是这两个方面导致了室内空气污染,因此本题选D。