校正
重新
劳累
退休
retire [rɪˈtaɪə(r)] vi.退休，退役；退下，撤退；就寝 例句：If they prove ineffective they should be demoted or asked to retire. 句意：如果事实证明他们已无力胜任，应该将他们降级或让他们退休。故答案为D。
