D．go to the health center after the doctor's work ends

　　【解析】　细节理解题。根据“Cancel an Appointment”中的说明“Please call 541­346­2770 at least 2 hours before your scheduled check­in time to cancel an appointment.”可知，取消预约须至少提前两小时，因此如果明天不能按约定时间去，应尽早打电话取消预约。

　　【答案】　C

　　2．The health center can help you when you have ________.

　　A．a toothache

　　B．serious cancer

　　C．heart diseases

　　D．mental health problems

　　【解析】　推理判断题。根据“Services Offered”中的说明“Our board­certified physicians，nurse practitioners and dentists are prepared to address general medical care needs”可知，该健康中心会有牙医，因此牙痛可以前往就医。其他选项的病症不在健康中心的服务范围内。

　　【答案】　A

　　3．Who can enjoy the service of the health center?

　　A．Both teachers and students from the University of Oregon.

　　B．Students who have already graduated from the University of Oregon.

　　C．Only students who are studying in the University of Oregon now.

　　D．Any person who feels sick when he is in the University of Oregon.

　　【解析】　细节理解题。根据“A Healthcare Facility for Students”中的说明“We serve only students currently enrolled (在读) at the University of Oregon.”可知，该健康中心只服务于俄勒冈大学的在校学生。

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