影响老年妇女骨质疏松的最主要因素是()。
A.雌激素缺乏
B.低钙摄入
C.大量饮酒
D.蛋白质摄入过多
参考答案:A
Ms. Hartfield will make an excellent executive because, when confronted with a problem, she knows () what course of action to take.
A.hastily
B.urgently
C.abruptly
D.instantly
氟尿嘧啶对下列肿瘤有良好疗效的是()
A.急性淋巴性白血病
B.胃癌
C.绒毛膜上皮癌
D.霍奇金病
E.睾丸癌