A.地址:<select name=""id=""multiple><option value ="">廣州</option><option value ="">深圳</option><option value ="">上海</option></select>
B.地址:<select name=""id=""><option value ="">廣州</option><option value ="">深圳</option><option value ="">上海</option></select>
C.地址:<select><option1>廣州</option1><option2>深圳</option2><option3>上海</option3></select>
D.地址:<select><option>廣州</option><option>深圳</option><option>上海</option></select>