某有机物的结构简式如图所示，则下列有关该有机物的说法正确的是( )
| A．该有机物最多可以和2 mol NaOH发生反应 |
| B．该有机物能使溴水、酸性高锰酸钾溶液褪色，发生的反应均为氧化反应 |
| C．该有机物与银氨溶液可发生银镜反应 |
| D．该有机物遇FeCl3溶液显黄色 |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
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 |