第四部分:短文改错:10% Besides Egyptians, people of Mexico also builded     　　　41._____________ pyramids. They didn’t build the pyramids for tombs. They   　　 42. _____________ were used to build a pyramid and then build a temple on    　　  43.____________ top of them. The pyramids of Mexico are not as high as    　　  44.______________ that of Egypt, but they are big. Each pyramid has a wide    　　　45.____________ stairway that go from the bottom to the top.              　　　46._____________ The biggest pyramid in Mexico is almost 2000 year  　　　　　　47.___________ old. Scientists think it spent 10,000 men more than ten years 　　　48.____________ to build. On top of it they build a temple to worship sun.    　　　49.____________ The temple is no longer there and people call it the pyramid 　　　 50.____________ of the sun.