A．The third paragrap
B．The first paragrap
C．The last paragrap
D．The last but one paragrap
参考答案A
解析:综合理解题。短文的第一、二段说的是股关节骨折这种病在老年人中发病率高以及致病的原因。从第三段到最后一段都是在讲如何采取措施有效地避免这种伤害。在第三段中有这样一句话“a few modifications could prevent a lot of accidents”作为后边几段开始介绍避免伤害的措施的引言，也是一个总述，故答案为[A]。
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A．offer advice on how to prevent hip fracture
B．emphasize the importance of health precaution
C．discuss the seriousness of hip fracture
D．identify the causes of hip fracture
单选题
The third paragraph examines America’s future-mindedness from the__________perspective．
A．future
B．realistic
C．historical
D．present
The third paragraph examines America’s future-mindedness from the__________perspective．
A．future
B．realistic
C．historical
D．present
A．Economic stagnatio
B．Environmental destructio
C．High divorce rate
D．Neglect of histor