C、N、S都是重要的非金属元素。下列说法正确的是
A．三者对应的氧化物均为酸性氧化物
B．三者的单质直接与氧气反应都能至少生成两种氧化物
C．相同温度下，等物质的量浓度的Na2CO3、NaNO3、Na2SO3溶液的pH大小顺序：NaNO3＜Na2SO3＜Na2CO3
D．CO2、NO2、SO2都能与H2O反应，其反应原理相同
相关试题
It is often ______ that human beings are naturally equipped to speak.
| A．said | B．to say | C．saying | D．being said |
I can’t leave. She told me that I ______ stay here until she comes back.
| A．can | B．must | C．will | D．may |
—— Do you mind my opening the window? It’s a bit hot in here.
—— ______ , as a matter of fact
| A．Go ahead | B．Yes, my pleasure |
C．Yes, I do | D．Come on |
It’s high time you had your hair cut ; it’s getting _______ . 
| A．too much long | B．much too long |
C．long too much | D．too long much |
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