“战国”一词出自汉代刘向的《战国策》。刘向叙录日：“万乘之国七，千乘之国五，敌哞争权，盖为战国。”这一时期，国与国之间战争频繁。发生在此时的著名战役有

①马陵之战②淝水之战③长平之战④牧野之战⑤城濮之战⑥桂陵之战    [ ]

A．①②③    

B．①③⑥    

C．④⑤⑥    

D．②④⑤

A 49-year-old client with acute respiratory distress watches everything the staff does and demands full explanations for all procedures and medications. Which of the following actions would best indicate that the client has achieved an increased level of psychological comfort（）

A. Making decreased eye contact.

B. Asking to see family members.

C. Joking about the present condition.

D. Sleeping undisturbed for 3 hours.