本刊自今年第2期体育知识大奖赛起,对竞赛规则做了一些改变,要求参赛者将答卷剪下装入信封内。这个改变是根据“中华人民共和国邮政法实施细则”做出的。信封是用户传递书面信息的载体,它的主要作用是保护信息完整准确地寄达目的地。信封上除了收、寄件人地址、姓名、邮政编码、邮票、日戳等保证信 Since the second edition of the Sports Knowledge Grand Prix this year, we have made some changes to the competition rules, asking contestants to cut the questionnaire into envelopes. This change is made in accordance with the Implementation Rules of the Postal Law of the People’s Republic of China. Envelope is a carrier for users to transmit written information. Its main function is to protect the information completely and accurately to the destination. In addition to the envelope on the envelope, the sender address, name, zip code, stamp, date stamps and other letters of guarantee