A number of milk companies suffered a loss of reputation______ the deadly chemical Melamine found in milk powder,_____did celebrities(名人) who appeared in their advertisements.
A.for; so B.due to; as C.owing to; such D.since; as
答：B
译：许多牛奶企业因奶粉中发现的致命化学添加剂而声誉遭损,一如那些出现在广告中的名人.
析：第一空四个词（组）均可表示原因,for,since后跟从句,但本题中found in milk powder 为过去分词作定语,修饰前面的名词,所以排除AD.
表示前面的情况也适用于后者,用so did .,不用such did...排除C.
as 可引导非限制性定语从句,意为“正如...那样”,位置可前,可中,可后,因主句较长,did提前.故B为最佳选择.