参考答案：全国最大的食品经销商沃尔玛近期宣布，计划在5年内向粮食银行和饥饿救援组织捐赠20亿美 元。这是沃尔玛迄今为止最大慈善举措之一。

解析：
Wal-Mart, the nation’s largest grocer, announced plans recently to donate $ 2 billion over five years to food banks and hunger relief organizations. This has been one of the largest charitable efforts that Wal-Mart has undertaken.