Dusty Baker hit his 30th home run on the last day of the regular season, Burke couldn't contain his excitement. As Baker crossed home plate, Burke excitedly threw his arm in the air. Not knowing what to do, Baker lifted his arm, too. They slapped palms (击掌), and the move swept the clubhouse.

　　3．The wheelie (后轮平衡特技)

　　Daniel Canary bought his first penny­farthing bike (a type of bicycle with a large front wheel and a much smaller rear wheel) while working as a telegraph messenger and quickly became a local celebrity. In 1890, Canary dealt with the bike doing a wheelie at Niagara Falls. As the Chicago Tribune reported："Mr. Canary believes he was the first rider to perform the trick ... then regarded as impossible, of riding on the rear wheel, with the front wheel raised."

　　4．Air quotes

　　The first person to make history by punctuating with her hands, as noted in the Oxford English Dictionary, was described by a writer in the July 1927 edition of Science："Some years ago I knew a very intelligent young woman who used to inform us that her 'bright sayings' were not original by raising both hands above her head with the first and second fingers pointing upward. Her fingers were her 'quotation marks' and were very easily understood."

　　语篇解读：本文是一篇说明文。文章介绍了几个常见动作的起源。

　　5．Stan Musial bumped fists ________.

　　A．to greet B．to celebrate

　　C．to show anger D．to make signals

　　解析：选A　推理判断题。由第二段中的"who bumped fists instead of shaking hands to avoid catching colds"可推断，Stan Musial击拳是为了代替握手，而握手通常表示问候。

　　6．Why did Glenn Burke throw his arm in the air?

　　A．Because he felt helpless.

　　B．Because he scored in a game.

　　C．Because he didn't know what else to do.

　　D．Because he was very happy for his teammate.

　　解析：选D　细节理解题。由第三段中的"When teammate Dusty Baker hit his 30th home run ... Burke couldn't contain his excitement. As Baker crossed home plate, Burke excitedly threw his arm in the air."可知，Glenn Burke挥起胳膊是因为他为队友的成功感到高兴。

　　7．People use air quotes to ________.

　　A．stress the words that are being said

B．call listeners' attention to what is being said