Falls were the primary reason for injury with over three­quarters of the injuries occurring as the result of a fall. The severity of fall­related injuries had a lot to do with the height of the fall. Patients who were injured after falling from a height over 20 feet were 10 times more likely to be treated than patients who were injured falling from 20 feet or lower.

　　“We found that the climbers who fell from heights higher than 20 feet took up 7 percent of the patients treated for a rock climbing­related injury，”explained the study author Lara McKenzie，PhD, director at the Center for Injury Research and Policy at Nationwide Hospital. “This trend，combined with the fact that rock climbers have a higher hospitalization rate than other sports and recreational injuries, demonstrates the need to increase injury prevention efforts for climbers.”

　　1．Which body part is most likely to get injured for a climber?

　　A．The arm.

　　B．The ankle.

　　C．The knee.

　　D．The hand.

　　答案：B　细节理解题。根据第二段“The ankle was the most common body part to be injured(40 percent)．”可知踝关节是最容易受伤的部位，因此答案是B。

　　2．How many women climbers in America got injured while climbing a rock between 1991 and 2008?

　　A．About 40,000.

　　B．About 30,000.

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