下述哪个不属临床麻醉的工作内容
A．意外情况的防护和治疗B．保障安全C．方便外科手术D．治疗预激综合征
参考答案：D
We are organizing a lot of activities to celebrate the _______ birthday of the Communist Party of China
these months. [ ]
A. nineteen
B. ninety
C. nineteenth
D. ninetieth
圣西门的实业制度
