下列反应的离子方程式书写正确的是
| A．Na2O 溶于水：Na20+ H2O=2Na+ + 20H— |
| B．向 Ca(C10)2 溶液中通入过量 C02 ： 2C10-+H20+C02=2HC1O+CO32- |
| C．用FeC13溶液腐蚀铜板：Fe3十十Cu=Fe2十十Cu2十 |
| D．碳酸钙溶于稀醋酸:CaCO3+2H+=Ca2++CO2 +H20 |
Everybody was touched _____ words after they heard her moving story. 
| A．beyond | B．without | C．of | D．in |
One of the most important questions they had to consider was _____ of public health. 
| A．what | B．this |
C．that | D．which |
Encourage your children to try new things, but try not to ___ them too hard.
| A．draw | B．strike | C．rush | D．push |
The computer was used in teaching. As a result, not only__________, but students became more interested in the lessons. 
| A．saved was teachers’ energy | B．was teachers’ energy saved |
C．teachers’ energy was saved | D．was saved teachers’ energy |
The children all turned ____ the famous actress as she entered the classroom. 
| A．looked at | B．to look at |
C．to looking at | D．look at |