Cl2、SO2均能使品红溶液褪色。后者因为品红分子结构中的发色团遇到亚硫酸后结构发生改变，生成不稳定的无色化合物。其漂白原理可用下面的反应方程式表示：
下列说法正确的是
| A．品红分子结构中，19个碳原子都可能在同一平面上 |
| B．SO2和Cl2分别使品红溶液褪色的原因可以用同一原理解释 |
| C．“无色化合物”分子中，19个碳原子都可能在同一平面上 |
| D．品红溶液中同时通入Cl2、SO2，漂白效果会更好 |
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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