A、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">必须经依法登记，自记载于不动产登记薄时发生效力</span></p>
B、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">合同生效时设立</span></p>
C、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">依法属于国家所有的自然资源，所有权必须登记</span></p>
D、<p><span style="font-family: \'Microsoft YaHei\'; font-size: 13px; ">未经登记，不动产交易合同无效</span></p>
A、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">必须经依法登记，自记载于不动产登记薄时发生效力</span></p>
B、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">合同生效时设立</span></p>
C、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">依法属于国家所有的自然资源，所有权必须登记</span></p>
D、<p><span style="font-family: 'Microsoft YaHei'; font-size: 13px; ">未经登记，不动产交易合同无效</span></p>