【正确答案】 B

【答案解析】解析：concerning prep．关于(注：一般用存一个名词后面作定语，偶尔可以放句首：She said nothing concerning you．Then they drew up their declaration concerning the war．Concerning your letter I’m pleased to inform you that your plans are quite acceptable to us．)。judging from／by用……来衡量，从……判断。viewing是动词view的现在分词形式。considering prep．考虑到，鉴于，由于。