D

Analysis of test questions: A. Improper collocation. If the original sentence is compressed, it means "the central idea requires the ability to have ……", and the subject and object do not match, so it can be changed to "summarizing the central idea requires the ability to have …". B. semantic repetition. "Can be called" means what can be called, and delete "can be said". C. illogical. A man is a man. Feudal tradition discriminates against women, so when a woman is very successful, it is called a woman who is not inferior to a man, which means that a woman is no worse than a man. This sentence is not about the separation of male workers and female workers, but about the separation of young workers and elderly workers. There are men and women among the elderly workers, so "don't let a man" be changed to "be old and strong".