单项选择题 我国对食用油中的敌敌畏农药残留限量指标为( )。

单项选择题 Did you enjoy your college life?().A. Yes, it was rich and colorfulB. No, it is interestingC. I like my college very much

单项选择题 新鲜猪肉烧成的肉汤（）。