—I told you that he would go abroad for further study.

—Actually I had little doubt_____ it was true.

A．whether

B．since

C．that

D．if

颅脑CT扫描采用的听眶线是（）

A．外耳孔与外眼眦的连线

B．外耳孔上缘与眶下缘的连线

C．外耳孔与眉上缘中点的连线

D．外耳孔与鼻翼的连线

E．外耳孔上缘与眶上缘的连线