题目

珠江三角洲利用其紧邻港澳的位置，国家特殊的政策，成为我国最早发展_____经济的地区之一                                                                                      (    )  A、外向型         B、内销型        C、辅助型          D、内向型Li Ming is so careful that he always looks over his exercises to there are no mistakes.A. make sure B. find out C. think of D. work out