选择题：23. 观察颈椎椎间孔病变,正确的摄影体位是( )(本题4.0分) A、正位 B、侧位 C、

题目内容：

23. 观察颈椎椎间孔病变,正确的摄影体位是( )(本题4.0分)
A、正位
B、侧位
C、斜位
D、过屈位
E、颈椎侧位

参考答案：

The reason that Tom is absent from class today is

The reason that Tom is absent from class today is ( ). A.because he is sick B.

Fill in the blanks with appropriate conjunct:I hear you are going abroad. ______

131[填空题,0.7分] Fill in the blanks with appropriate coordinator or subordinator:__

Ten minutes earlier, ( ) we could have caught the last train. A.and B.but C.

液晶显示器LCD是一种利用液晶的( )制成的显示器。(本题2.0分) A、光电效应 B、霍尔效应 C、磁光效应 D、扭曲-向列效应