题目内容：
What does Cary Cooper say about recent trends in the workplace?A. He believes that a long working day is counter-productive.
B. He has doubts about the results of the Quality of Working Life survey.
C. He says that employers should accept the link between working hours and safety.
D. He argues that further research is needed into the relationship between work and health.
参考答案：
答案解析：