题型：语法填空（语篇） 题类：常考题 难易度：普通
鲁教版（五四制）初中英语九年级Unit 1 When was it invented Period 5 Section B同步练习
It is(say) that an earthquake happened 2,000 years ago in China. The earthquake happened (all of a sudden)(without doubt), a lot of people died in this accident. At that time, a man named Zhang Heng decided(invent) something to stop people from (die) in an earthquake. He tried many times. At last, he succeeded. It(be used for) knowing about which place would have an earthquake. If an earthquake (happen) in the west, the ball in the western dragon's mouth of the (instrument) would fall. The story about Zhang Heng and his instrument (translate into) many languages. I think it's really a great (invent) in the world.
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