Tom()more than twenty pounds on the novel.
A.spent
B.paid
C.cost
D.took
参考答案:A
吗啡禁用于()
A.分娩镇痛
B.胃肠绞痛
C.肾绞痛
D.晚期癌痛
E.心肌梗死剧痛
底模拆除时的混凝土强度应能保证其表面及棱角不受损伤。( )