“回南天”天气返潮现象，一般出现在我国华南地区每年的二、三月份，主要是因为冷空气走后，暖湿气流迅速反攻，致使气温回升，空气湿度加大，一些冰冷的物体表面遇到暖湿气流后，容易产生水珠。下表为“江门市2012年3月份部分天气数据”，据此回答下列各题。
根据材料，判断下列叙述哪项是正确的（）
A.15日与14日相比，夜晚大气逆辐射较强
B.15日至17日，江门有暖锋过境
C.12日至14日，连续几天的降水多为锋面雨
D.12日至17日，平均气温越高，相对湿度越大
参考答案：D
解析：
根据表格数据，15日是晴天，与14日相比，夜晚大气逆辐射较弱，A错。15日气温升高，可能是暖气团经过，但16至17日，气温又降低，可能是冷空气经过，所以B错。12日至14日，此时是3月份，锋面雨带还未在我国登陆，C错。12日至17日，基本上是平均气温越高，相对湿度越大，D对。
考点：区域天气特征的成因，锋面雨带的移动规律。
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| One day, a poor farmer took a bag of rice to the town. He didn't 1____________ what to do when the bag fell off his horse. The bag was too 2____________ for him to lift. He hoped that someone would come and 3____________ him. Before long a man came over. 4____________ the farmer's heart sank (下沉) when he 5____________ the man, because he was the great man in the town. The farmer was afraid to ask for help. As soon as he 6____________ to the farmer, the great man 7____________ his horse and said: " You need my help, don't you? Let me help you." Then he took one end of the bag 8____________ the horse. " 9____________ can I thank you? " " Well," the great man answered. " If you see anyone in need of help, do 10__________ for him."
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