题目内容：
根据材料回答题：
A. Other scientists are now searching for evidence to prove this.
B. A Swiss writer named Erich Von Daniken wrote that the Nazca lines were designed as a landing place for UFOs.
C. Scholars differ in interpreting the purpose of the designs.
D. The largest pictures may have been the sites for special ceremonies.
E. Seen from the ground, it looks like lines scratched into the earth.
F. He called Nazca "the largest astronomy book in the world".
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答案解析：