填空题 ID Card For a new student, the ID card will be mailed to his/her mailing address approximately 1working days after his/her enrollment in classes. For 2reasons, the student needs to make sure that his/her mailing address is a 3and accurate 4address.
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【正确答案】 1、10,    2、security,    3、valid,    4、national    
【答案解析】