原发性胆汁性肝硬化（）
A．血氨升高
B．血清胃泌素升高
C．血清ALP活力明显升高
D．胃酸缺乏
E．血清脂肪酶升高
参考答案：C
It was not what he said but the way he said it ________ hurt his son deeply. [ ]
A. when
B. where
C. that
D. As
什么叫内聚能密度？它与分子间作用力的关系如何？如何测定聚合物的内聚能密度？
