下列何种现象不能提示胎儿窘迫
A.胎心率>160次/分
B.胎心率<120次/分
C.头皮血液pH值<7.2
D.头位时羊水含胎粪
E.宫缩时出现早期减速
参考答案:E
The time he has devoted in the past ten years ________ the disabled is now considered ________ of great value.
A.to help;being
B.to helping;to be
C.to help;to be
D.helping;being