It is that the pork with the “lean-meat powder”（瘦肉精）has been widely all over the country

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(答案→)A. terrifying; distributed
B. terrified; negotiated
C. terrifying; distinguished
D. terrified; discriminated
解析：考查ing形容词和近义词辨析。修饰物用以ing结尾的形容词，排除B、D；distribute“分配，分散”，negotiate“谈判”；distinguish“区分，辨别”；discriminate“”歧视，区别。句意“含有瘦肉精的猪肉已经分散到全国的消息是骇人听闻的。”故选A。