88. Around the area of Aswan there are a lot of important old temples, which____ ____about 1250BC.

A.dated from                  B. began with           C. started with                 D. opened from

岩层产状和厚度不变，若坡向与倾向相同，当坡角越接近倾角时，则露头宽度（）

A、越小

B、越大

C、无变化