疏风定痛丸中含有
A．玫瑰花、款冬花、扁豆花、佛手片B．刺猬皮、九香虫C．黄精、党参、天冬D．杏仁、柏子仁、砂仁E．厚朴、肉桂、砂仁
参考答案：B
Tom pretended______it but in fact，he knew it very well.
A．not listen to
B．not to hear about
C．not to have heard about
D．not to be listening to
管件安装前，应检查管件内壁有无侵蚀，或各球头球面有无碰伤，各接头体螺纹有无损坏，有上述情况者（）
