棉子饼中有毒有害物质主要有（）和（）。
参考答案：游离棉酚；环丙烯脂肪酸
If I _______ plan to do anything I wanted to, I’d like to go to Tibet and travel through as much of it as possible.
A．would
B．could
C．had to
D．ought to
病人吞咽梗阻，胸膈痞闷，口干咽燥，舌质偏红，苔薄腻，脉弦滑，选方
A．启膈散B．增液汤C．五汁安中饮D．大黄甘草汤E．通幽汤
