A:减少城市的噪声和光污染
B:减轻热岛效应和美化环境
C:减轻光化学烟雾的污染
D:降低空气中可吸入颗粒物的数量
某同学看远处的物体时,其光路如图,则下列说法中正确的是( )
决____ 夫____ 期____
快____ 天____ 朋____
In society, some greedy businessmen hide from their r____ and only worry about money.