— Has ______ problem been solved?    

— Not yet. We're trying to think of ______ way out, but it's quite difficult to find one. [ ]

A. a; the    

B. the; a    

C. a; a      

D. the; the

关于心理应激，错误的说法是（）

A.可引起生理反应

B.可引起心理和行为反应

C.对身心健康产生不利影响

D.经过认知评价

E.可能提高工作效率