题目: (故事细节题)The Three-North Afforestation Program (三北防护林) refers to the forestation in________,________ and ________China. ( )
northwest
north
northeast
none of the above
题目: (故事细节题)The Three-North Afforestation Program (三北防护林) refers to the forestation in________,________ and ________China. ( )
northwest
north
northeast
none of the above