白银黄金钢铁和铜的价格近几天都有了比较大幅度的下降。两两年期和10年期的美债收益率持续的走强，商品交易上的衰退迹象越来越明显。当前由于美联储的鹰派态度，以及申请失业救济金的人数逐渐的增高，充分的呈现出了
I have a sample program, which needs to execute 3 methods in a particular order. And after executing each method, should do error handling. Now i did this in a normal fashion, w/o using delegates like
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