代码里的这一行是干什么的？

tszjcaosong

google_ad_client = &quot;pub-*****480282*****&quot;;<br />google_ad_width = 468;<br />google_ad_height = 60;<br />google_ad_format = &quot;468x60_as_rimg&quot;;<br /><font color="red">google_cpa_choice = &quot;CAAQycb8zwEaCB6untvYU66lKJnA93MwAA&quot;;</font><br />google_ad_channel = &quot;8428880397&quot;;<br />//--&gt;<br />&lt;/script&gt;<br />&lt;script type=&quot;text/javascript&quot; src=&quot;http://pagead2.googlesyndication.com/pagead/show_ads.js&quot;&gt;<br />&lt;/script&gt;<br /><br />红色的那一行。是干什么的？