It is recommended to have alternate text on these buttons, instead of have the screen reader read the URL. Here is an image button (Go button), followed by sample code to create it.
建议在这些按钮上使用替代文本，而不是让屏幕阅读器读取url。
They prefer no heading but if you do use a heading please consider using an image not text and consider using something like "Recommended Sites".
他们不愿意给广告来个标题，不过你一定要使用一个标题的话，请考虑使用一个图片而不是文本，在上面画上“推荐的站点”类似的字眼。
应用推荐