We often say kids are blessed with endless creation, and that is a fact. I remember reading a story about how a teacher 21 to inspire the students in her class. The story happened in a 22 class for students in a primary school. The teacher drew a lot of 23 on the blackboard. Then the 24 was raised by the teacher that what came to 25 when they caught the first sight of the white sheep. The kids gave the teacher many answers. For example, some of them said the sheep 26 like white snow in winter. Others said they were like masses of marsh(共10分)完成下列填空:A . 将下列化学方程式改写成离子方程式,离子方程式改写成化学方程式:⑴ Na2CO3+2HCl==2NaCl+CO2↑+H2O ______________________;⑵ Fe+ Cu 2+== Fe2+ +Cu ____________________________。B.写出下列反应的离子方程式(1)实验室用锌与稀硫酸反应制氢气: ;(2)盐酸溶液与氢氧化钠溶液: ;(3)稀硫酸与氢氧化钡溶液: .