It’s such a surprise! Never did she dream of _______ a chance for her to be sent abroad for further study.

A．there to be

B．there having

C．there being

D．there is

纵隔气肿X线摄影体位除常规体位外，还必须加照

A．前弓位

B．侧位

C．侧卧水平正位

D．仰卧前后位

E．切线位