使用CR摄影，对哪些信息的显示优于常规X线胸片（）
A.肺间质纤维化
B.间质性肺炎
C.肺结节性病变
D.肺泡病变
E.以上都不是
参考答案：C
中国最早的民族保险公估人可以追溯到（）年上海商人创办的上海益中公证行。
A.1921
B.1927
C.1935
D.1939
--- “Where have you been?”
--- “I got caught in traffic; otherwise _____ sooner.”
A．I would be here
B．I have been here
C．I had been here
D．I would have been here
