19. A．connecting

　　B．touching

　　C．joining

　　D．supporting

　　解析：选C。“我希望看到我的家人和我一起参加毕业典礼。”join是“加入，陪伴”之意，符合语境；而connect是“和……联系”；touch是“联系；触摸”；support是“支持”。

　　20.A.wait

　　B．stand

　　C．bear

　　D．expect

　　解析：选A。can’t wait to do是“等不及干某事”，符合语境；而stand是“忍耐”，相当于bear；can’t expect to do是“不能够指望干某事”。

　　.阅读理解

　　A

　　Bicycle Safety

　　　Operation　Always ride your bike in a safe, controlled manner on campus (校园). Obey rules and regulations. Watch out for walkers and other bicyclists, and always use your lights in dark conditions.

　　Theft Prevention　Always securely lock your bicycle to a bicycle rack－even if you are only away for a minute. Register your bike with the University Department of Public Safety. It’s fast, easy, and free. Registration permanently records your serial number, which is useful in the possible recovery of the bike stolen.

　　Equipment

　　Brakes　Make sure that they are in good working order and adjusted properly.

　　Helmet　A necessity, make sure your helmet meets current safety standards and fits properly.

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