票证管理人员和用票人员要经常检查票证安全情况，做好（）。
A、防盗
B、防火
C、防潮
D、防虫蛀
E、防丢失
参考答案：A, B, C, D, E
—What happened? I called you several times yesterday evening, but I couldn't get through.
—Sorry, my sister and I ________ on the phone all the time.
A．talked
B．have talked
C．were talking
D．have been talking
在中国的传统文化中，佛家以（）修行营造和谐心境。
A、无欲
B、无为
C、中庸
D、仁政
