He is a man with no moral _______. A: scruple B: scrutiny C: security D: scourge

上个世纪，人类经历了两次世界大战，生灵涂炭。可翻译为： A: The two world wars in the last century caused mankind untold sufferings. B: In the last century, mankind underwent the scourge of two world wars and endured the hardships. C: Last century saw the mankind undergoing untold sufferings brought by the two world wars. D: In the last century, mankind experienced untold sufferings by the two world wars.