下列哪些成分常存在于新鲜植物中
A．苯醌B．萘醌C．菲醌D．蒽酮E．羟基蒽醌
参考答案：D
I’m quite interested in Spanish history, the civil war in Spain _______.
A．in particular
B．in common
C．in advance
D．in general
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