填空题
Proofread the passage as required. Each indicated line contains a maximum of one error. Correct the passage in the following way: for a correct line, put the sign " √" in the corresponding blank; for a wrong word, underline the wrong word and write the correct one in the blank; for a missingzzpy word, mark the position of the missing word with the sign " ∧ " and write the word you believe to be missing in the blank; for an unnecessary word, cross the unnecessary word with the sign " — "and put the word with the sign " — " in the blank. Remember to write the answers on the answer sheet. The world is full of wonderful places, both natural and man-made. Easter Island lays in the south-eastern Pacific Ocean, about 3,600 81.______ kilometers west of mainland Chile. The island is called Easter Island because of it was discovered on Easter Sunday in 1772 by Dutch 82.______ explorer Jacob Roggeveen. Inhabited by Polynesians since 300 or 400 CE, Easter Island is now a World Heritage Site. The most amazed sight on it is the giant statues carved out of 83.______ the volcanic rock. These massive stone figures have made Easter Island a famous site. They were probable made by Polynesians 84.______ between about 1000 and 1600 CE. One mystery about these statues is how the primitive Polynesians, using only the simplest stone tools, 85.______ carved and then move these statues. The answer seems to be that they 86.______ were pulled along the rails made from trees by lots of people together. This could also be the reason why there are few tree on the island. 87.______ Over the centuries, Easter Island has suffered from deforestation, disease, war and climate changes. As result, most of the island's native Polynesian 88.______ identify has been lost. However, the island's magnificent stone figures 89. ______ will keep people fascinating in Polynesian history and culture for many 90.______ years to come.