下列是为疼痛患者实施止痛措施，错误的是()

A．药物与非药物止痛方法联合使用

B．当患者出现明显疼痛时，护士才可采用止痛措施

C．对中等程度疼痛的患者，可采用非麻醉性止痛药

D．疼痛原因未明，禁止使用任何镇痛药

E．给药后20～30分钟，须评估和记录镇痛效果及不良反应

Cathy was a secretary of ABC Ltd. Last Monday, she was late for the office by five minutes after she got out of bed late that morning. It was the first time that Cathy did not arrive at the office on time. The regulation of the company requires the employees to report for their duties punctually.To avoid problems, Cathy told the company that it was the traffic congestion that caused her to be late. This did not affect Cathy in the performance of her duties for the company. The company has discovered that Cathy’s explanation of her lateness was a lie.Required:In relation to the Employment Ordinance (Cap 57), advise the company as to whether there is any ground for the company to dismiss Cathy summarily. (10 marks)