shark's fin appeared above water, Brian caught it.With his left hand holding onto the fin, Brian hit the shark in the gills (鱼鳃) with his right fist several times.On the fifth blow, "The shark trembled，" Brian says, "and swam back out toward open water."

　　"Are you OK？" Brian called out.

　　"He bit my fingers off！" McKenzie responded.

　　Two other surfers heard the yelling and swam over to help.Back on dry land, Brian drove Mckenzie to the hospital, about 25 miles away, where doctors removed part of her left fingers and repaired damage to her hand.

　　McKenzie realizes how lucky she was that her friend was there to help.For his part, Brian says he acted on instinct."I knew what I had to do to save my friend，" he says.

　　语篇解读：文章讲述了两个朋友去冲浪，其中一人被鲨鱼袭击，另一人勇敢击退鲨鱼，拯救朋友的故事。

　　5．What made McKenzie's board rise?

　　A．The pull of the shark.

　　B．The crash into a rock.

　　C．The strong waves.

　　D．The shark's body.

　　解析：选D　细节理解题。根据第二段第三句"She screamed as she felt the board rising, the shark's body breaking the surface."可知，鲨鱼的身体冲出水面使得她的冲浪板升了起来。故选D项。

　　6．What does the underlined word "it" in Paragraph 3 refer to?

　　A．McKenzie's left hand.

　　B．McKenzie's surfboard.

　　C．The aggressive shark.

　　D．The strong wave.

　　解析：选A　代词指代题。根据第三段第一句中的"leaving her on the surfboard, gripping its side with her left hand"和第二句可知，it指代麦肯齐被鲨鱼咬住的左手。

　　7．How did Brian help his friend McKenzie?

　　A．By removing the leash from her ankle.

　　B．By hitting the shark in its gills.

　　C．By helping her get on her board again.

　　D．By holding the shark's fin back toward open water.

解析：选B　细节理解题。根据第四段第二、三句"With his left hand holding onto the fin, Brian hit the shark in the gills ... On the fifth blow ... swam back out toward open water."可知，布