在下列诸因素中,哪项与幼婴易患呼吸道感染无关
A.免疫反应较差
B.细支气管内径较窄
C.各级支气管尚未建立
D.呼吸道SigA分泌较少
E.咳嗽反射弱
参考答案:C
Do you know the answer _____________ the question?[ ]
A. to
B. of
C. at
D. in
连词成句。
1. the, at, Turn, cinema, left (.)
_________________________________
2. go, Then, straight (.)
3. It's, the, on, left (.)