.

. ---All the building materials have been washed away.

---So I have heard. But there was no sign ______ a heavy rain was on the way last night.

A．when

B．If

C．which

D．that

孟浩然《与诸子登岘山》诗：“人事有代谢，往来成古今。江山留胜迹，我辈复登临……羊公碑字在，读罢泪沾襟。”该诗句可以体现（）

①文化是人类社会实践的产物②文化是由人创造的

③文化具有继承性④文化影响人的精神世界

A.①②③

B.①②④

C.①③④

D.②③④