骨肿瘤及肿瘤样病变的影像学首选方法是（）
A.MRI
B.CT
C.X线平片
D.ECT
E.DSA
参考答案：C
Although their new factory building is still under construction, we have already placed order for 200 pairs of shoes.
A．the; an
B．a; an
C．/; an
D．/; /
恽树珏的儿科著作是
A．《保赤新书》B．《幼幼新书》C．《幼幼集成》D．《幼科发挥》E．以上都不是
