造成胎儿宫内生长迟缓最常见的原因是（）。
A.臀位
B.胎盘早剥
C.高龄初产
D.妊高征
E.经产妇
参考答案：D
传动轴
As our eyes ranged over the broad shoulders of the mountain, the conception of its () grew upon us.
A. multitude
B. gratitude
C. latitude
D. magnitude
