Jawaban: E
The following text is for questions 20 and 22.
The Great Wall, one of the greatest wonders of the world, was listed as a World Heritage by UNESCO in 1987. Just like a gigantic dragon, it winds up and down across deserts, grasslands, mountains and plateaus, stretching approximately 21,196 kilometers from east to west of China.
With a history of about 2,700 years, some of the Great Wall sections are now in ruins or have disappeared. However, the Great Wall of China is still one of the most appealing attractions all around the world owing to its architectural grandeur and historical significance.
The Great Wall of China is the longest man-made structure in the world. Traversing northern part of the country, what was a huge military line of defense in the past has now become a unique world heritage site and a symbol of China. With a total length of 21,196.18 km (13,170.70 miles), equal to half the length of the Equator, the Great Wall of China is the longest feat of human engineering. The average height of the walls is 6 to 7 meters (20 to 23 feet), and the highest is 14 meters (46 feet). The average width is 6.5 meters (21.3 feet).
