单选题 The international situation has been growing ______ difficult for the last few years.
[A] invariably [B] presumably [C] increasingly [D] dominantly

【正确答案】 C

【答案解析】increasingly越来越…地，日益；invariably不变地，始终如一地；presumably大约，大概；dominantly占优势地，支配地。句意：在过去的几年里，国际局势越来越令人难以捉摸。