具有创伤性的检查是（）
A.螺旋CT和电子束CT
B.放射性核素肺通气／灌注扫描
C.磁共振显像
D.超声心动图
E.肺动脉造影
参考答案：E
—Tom, you look tired this morning. What’s wrong?
—I was so busy that I didn’t go to bed________12 o’clock last night.
A．until
B．when
C．though
D．unless
民事纠纷的解决方式有哪些？
