6 . 阅读下面的材料,在答题卡相对应的题号区域内填入适当的内容(每空不多于3个单词)或括号内单词的正确形式。
Strange things were 1 (happen) in the countryside of northeast Hebei. For three days the water in the village wells 2 (rise) and fell. Farmers noticed that the well walls had deep cracks in 3 (they). A smelly gas came out of the cracks. In the farmyards, the chickens and even the pigs were too nervous 4 (eat). Mice ran out of the field 5 (look) for places to hide. Fish jumped out of their bowls and ponds. 6 about 3:00 am on July 28th, 1976, some people saw 7 (brightly) lights in the sky. The sound of planes could 8 (hear) outside the city of Tangshan even when no planes were in the sky. In the city, the water pipes in some buildings cracked and burst. 9 the one million people of the city, 10 thought little of these events, were asleep as usual that night.