CT成像设备即将发生的重大变化是（）
A.大孔径CT
B.全身螺旋CT
C.多层螺旋CT
D.双层螺旋CT
E.平板探测器CT
参考答案：E
Faced with a bill for $10,000，________.
A．an extra job has been given to John
B．the boss has given John an extra job
C．an extra job has been taken
D．John has taken an extra job
台湾岛的面积有多少平方公里（）
A、36000
B、38000
C、33000
