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Unit 2 English around the world (60分钟81分) Part A 一、阅读理解(共8小题;每小题2分,满分16分) A It was originally built to defend an empire(帝国),but now parts of the Great Wall of China are crumbling(破碎)so badly that they need someone to hurry to their defense. About 2,000 kilometers,or 30%,of the ancient fortification(防御工事) built in the Ming Dynasty has disappeared due to natural and human damage,according to the Beijing Times.And the situation could worsen,experts are warning as not enough is being done to preserve what remains. “It’s a great pity to witness the Great Wall in such terrible situation,” Mei Jingtian,a volunteer who has worked for three decades to safeguard the structure and has founded the Great Wall Protection Association,tells CNN. About 8,000 kilometers of the structure dates from the Ming period between the 14th and 17th centuries and is considered by some to be the original Great Wall.Of this,2,000 kilometers is made up of naturally occurring earthworks—and so only 6,000 kilometers of actual Ming Dynasty wall was ever built.Stretches(延伸)built in other eras make up a total length estimated up to 21,000 kilometers. Many visitors to China associate the Great Wall with a widely restored stretch of Ming era wall at Badaling near Beijing,but this is far from typical of most of the structure. | 
