托福词汇猜测题之surging

　　For every three Canadians in 1945, there were over five in 1966. In September 1966 Canada's population passed the 20 million mark. Most of this surging growth came from natural increase.

　　The word "surging" is closest in meaning to which of following?

　　(A) new

　　(B) extra

　　(C) accelerating

　　(D) surprising