一般聚落比较密集的是（ ）
A．温暖湿润的平原地区
B．两极地区
C．高山地区
D．高原地区
温暖湿润的平原地区，自然环境优越，聚落一般比较密集．
故选：A．
咀嚼片正确的服法有
A．置药片于舌根部，贴近咽喉黏膜
B．咀嚼时间一般控制在5分钟左右
C．在口腔内咀嚼的时间宜充分
D．咀嚼后可用少量水(温开水)送服
E．中和胃酸时，宜在餐后1～2小时服用
— Hi, Jack!When did you arrive in Berlin?
— Last weekend. I _________ a different culture since then.[ ]
A. was experiencing
B. will be experiencing
C. have been experiencing
D. had been experiencing
