将0.01mol Cl2通入含0.03mol Br－和0.03mol I－的混合液中，再加CCl4振荡，则CCl4层的颜色是（ ）
| A．紫黑色 | B．橙红色 | C．棕色 | D．紫色 |
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 |
粤公网安备 44130202000953号