Read More Tag not working in my custom theme page

hi,

i m using WP theme but my home page is custom ! i m adding more tag in my post but its not working on my home page:

here is my CODE:

[ Moderator Note: Please post code or markup snippets between backticks or use the code button. ]

<?php
$today = getdate();
$query = new WP_Query('&category_name=topstory&posts_per_page=1' );
echo '
<ul>';
while ( $query->have_posts() ) : $query->the_post();
	echo '
<li>';
	$queried_post = get_post($cat_id); ?>
	<h1><a>" title="<?php the_title_attribute(); ?>"><?php the_title(); ?></a></h1>
	<span class="date"><?php the_time('F j, Y') ?></span>
	<div class="clear"></div>
	<div class="maximg"><a>" title="<?php the_title_attribute(); ?>"><?php the_post_thumbnail(); ?></a></div>
<div class="contentpp">
<div class="post-excerpt">								<?php the_excerpt(); ?>
		</div>

		  </div>
	<?php
	echo '</li>
';
endwhile;
echo '</ul>
';

		?>