β—紫罗兰酮是存在于玫瑰花、番茄等中的一种天然香料，它经多步反应可合成维生素A1。下列说法正确的是（ ）
| A．β—紫罗兰酮与中间体X互为同分异构体 |
| B．1molβ—紫罗兰酮最多能与2molH2发生加成反应 |
| C．维生素A1易溶于NaOH溶液 |
| D．中间体X可使酸性KMnO4溶液褪色 |
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 |
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