题目

补全对话A:Hi,Dave.Do you know that the Great Wall is the longest wall of the world?B:Yes.And I really admire yourThey were so clever and brave.A:What do you think it was used for?B:It might be used for keeping the wind fromthe sand away.A:Oh,no.There used to be many wars in the north of China.So people built the Great Wall to prevent from entering China.B:Oh,I see.Its was to protect people's safety,wasn't it?A:Yes,you are right.At that time,the leader of China was Qing Shihuang.Thanks to the Great,he got of the wars and joined six countries into a big country.B:He must be the greatest emperor in Chinese history.A:No,he  be the greatest one.In fact,the people lived a hard life at that time.B:What was the Great Wall made ?A:Bricks and stones.Some of the stones are so huge that they  as much as two tons.B:Really?I wonder how they managed to move andup those heavy stones without modern machines.A:Yes,there remain many about it waiting for us to discover. 答案：【1】ancestors【2】blowing【3】enemies【4】purpose【5】victory【6】couldn't【7】of【8】weigh【9】lift【10】mysteries

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