在selenium with java中，如何选择当鼠标悬停在按钮上时可见的按钮内的隐藏下拉列表

我正在写一个selenium程序来解析好市多网页上的评论。

我想对评论进行排序，并一次获取一页已排序的评论。 问题在于，选择下拉列表隐藏在按钮元素下，只有当鼠标悬停在其上时才可见。我能够访问按钮，但无法访问select元素

DOM:

<div class="bv-dropdown"> 
 <div class="bv-dropdown-target" role="menu"> 
  <span id="bv-dropdown-select-reviews" class="bv-dropdown-label"> Sort by: </span> 
  <button type="button" class="bv-focusable" aria-haspopup="true" aria-expanded="false" role="menuitem" aria-labelledby="bv-dropdown-select-reviews bv-dropdown-title-reviews"> 
   <span id="bv-dropdown-title-reviews" class="bv-dropdown-title">   Most Relevant           </span> 
   <span class="bv-dropdown-arrow" aria-hidden="true" role="presentation"> ▼ </span> 
   <span class="bv-off-screen">Menu</span> 
  </button> </div> 
  <select class="bv-select-cleanslate bv-dropdown-select" aria-hidden="true" aria-labelledby="bv-dropdown-select-reviews" tabindex="-1">  
   <option value="relevancy" selected=""> Most Relevant </option>  
   <option value="mostHelpful"> Most Helpful </option>  
   <option value="positive"> Highest to Lowest Rating </option>  
   <option value="negative"> Lowest to Highest Rating </option>  
   <option value="mostRecent"> Most Recent </option>  
  </select> 
</div>

WebElement sortSelection = driver.findElement(By.xpath("//div[@class='bv-dropdown']"));

    Actions action = new Actions(driver);
    action.moveToElement(sortSelection).moveToElement(driver.findElement(By.xpath("//select[@class='bv-select-cleanslate bv-dropdown-select']/option[@value = 'mostRecent']"))).click().build().perform();

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请帮忙

这与下面的答案不同吗？是的，主要问题是下拉列表是隐藏的，我的代码无法访问元素