写出下列反应的化学方程式和离子方程式：

（1）铁与硫酸铜溶液反应化学方程式：______；离子方程式：______．

（2）钠与水的反应化学方程式：______；

（3）碳酸钙与盐酸反应离子方程式：______．

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.