题目

    Maria was a 42-year-old lady. She always said she had one of the world’s best  1 . She worked for National Park Service at the Statue of Liberty （自由女神雕像）in New York City. “  2   come here from all over the world, ”Maria said. “Helping them learn about‘Lady Liberty’is really   3  .”    Maria began her day just like one of the visitors. She took a fifteen-minute boat   4  to Liberty Island, where the statue   5  . Then she helped visitors see the exhibits in the museum. The museum is   6   the famous statue. In the museum, Maria often talk已知：如图，直角梯形中，，，求的长．