西亚和北非地区的大多数房屋墙壁厚、窗户小、色浅,这是因为( )
A:受传统文化影响的缘故
B:为了适应炎热干燥、多风沙的气候
C:受宗教影响的缘故
D:防冬季的寒冷
Greg wanted to climb a mountain, but he ended up ____ (help) thousands of people to have a better life.
7×4____28
8×4____31
8×5____44
9×5____44