以下哪项不是我国艾滋病流行的四个时期？（）
A、传入期
B、扩散期
C、增长期
D、平缓期
参考答案：D
—You wouldn't be interested in two tickets for tonight's concert, would you?
—_______, I wouldn't.
A．Not much
B．very much
C．too much
D．that much
恩格斯自然辩证法的基本思想是什么？
