直肠癌最主要的诊断方法是
A.CEA测定
B.腹部B超
C.纤维结肠镜检查
D.钡灌肠X线检查
E.直肠指检
参考答案:E
口呼吸引起的错牙合畸形属于()
A.遗传因素
B.环境因素
C.呼吸功能异常
D.全身因素
E.口腔不良习惯
–John. Father is not feeling well.
--I know. A doctor has been sent _______. But he hasn’t turned _______ yet.
A.for; up
B.out’ up
C.for; on
D.out; on