下列各物质的学名是：Na2S2O3叫硫代硫酸钠；CaSx叫多硫化钙；Na2O2叫过氧化钠；KO2叫超氧化钾。试综合上述命名规律，分析回答：Na2CS3应读做
| A．硫代碳酸钠 | B．多硫碳酸钠 | C．过硫碳酸钠 | D．超硫碳酸钠 |
相关试题
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 |
Edward, you play so well. But I ______ you played the piano. 
| A．didn’t know | B．hadn’t known |
C．don’t know | D．haven’t known |
She brought with her three friends, none of ______ I had ever met before. 
| A．them | B．who | C．whom | D．these |
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