____ by accident ____ by design, he arrived too late to help us.
A、Not only; but also
B、Neither; nor
C、Whether;or
D、Both;and
【正确答案】：C
【题目解析】：【考点点击】本题考查并列连词的含义。【要点透析】 Not only. but also .和bothand.都表示“不仅…而, Neithernor.意为“既不也不…”, Whetheror意为“或者……或者…”。本句意为:无论是偶然还是必然,他都来得太迟了,所以没有帮到我们。故C项符合题意。
