He said he had been to Hong Kong ____ and he would go there _____ once

again.[      ]

A. long before, before long

B. before long, long before

C. long ago, before long

D. long before, long before

常用的进度计划工具是（）

A.SWOT矩阵

B.波特五力模型

C.诺兰模型

D.甘特图