我有以下代码来添加一个带有新分类法的下拉框，当前创建新帖子时的默认分类法是None. 例如，有没有一种方法可以定义默认值News.

function create_theme_taxonomy() {
    if (!taxonomy_exists(\'type\')) {
        register_taxonomy( \'type\', \'post\', array( \'hierarchical\' => false, \'label\' => __(\'Article Type\'), \'query_var\' => \'type\', \'rewrite\' => true ));
    }
}

function add_type_box() {
    add_meta_box(\'type_box_ID\', __(\'Article Type\'), \'article_type\', \'post\', \'side\', \'core\');
    remove_meta_box(\'tagsdiv-type\',\'post\',\'core\');
}   
function add_type_menus() {
    if ( ! is_admin() )
        return;
    add_action(\'admin_menu\', \'add_type_box\');
}
add_type_menus();

// This function gets called in edit-form-advanced.php
function article_type($post) {

    echo \'<input type="hidden" name="taxonomy_noncename" id="taxonomy_noncename" value="\' . 
            wp_create_nonce( \'taxonomy_type\' ) . \'" />\';
    // Get all type taxonomy terms
    $types = get_terms(\'type\', \'hide_empty=0\'); 
?>
<select name=\'post_type\' id=\'post_type\'>
    <!-- Display types as options -->
    <?php 
        $names = wp_get_object_terms($post->ID, \'type\'); 
        ?>
        <option class=\'type-option\' value=\'\'
        <?php if (!count($names)) echo "selected";?>>None</option>
        <?php
    foreach ($types as $type) {
        if (!is_wp_error($names) && !empty($names) && !strcmp($type->slug, $names[0]->slug)) 
            echo "<option class=\'type-option\' value=\'" . $type->slug . "\' selected>" . $type->name . "</option>\\n"; 
        else
            echo "<option class=\'type-option\' value=\'" . $type->slug . "\'>" . $type->name . "</option>\\n"; 
    }
   ?>
</select>    
<?php
}