e下拉式菜单 <form action="echo3b asp"method=POST p>< select name-"City"size-“4” multiple> < option>北京市< option> < option>上海市< option> < option>广州市< option> < option>重庆市< option> </select><p p>< cinput type" submit"vlue"提交">p> </form>下拉式菜单 <form action="echo3b.asp" method="POST"> <p><select name="City" size=“4” multiple> <option>北京市</option> <option>上海市</option> <option>广州市</option> <option>重庆市</option> </select></p> <p><input type="submit" value=" 提交"></p> </form>