中骨盆狭窄时主要引起()
A.胎膜早破
B.胎位异常
C.浮动胎头
D.胎头跨耻征阳性
E.持续性枕后位或枕横位
参考答案:E
下列词语中加点的字的读音全都不相同的一组是( )
A.纤维翩跹歼灭忏悔迁徙
B.凋零惆怅倜傥调唆雕塑
C.揣度喘气端倪湍急踹门
D.核对弹劾骇然氦气垓下
The little boy ________ in the mud all the morning. No wonder he is dirty from head to foot.[ ]
A.has played
B.is playing
C.has been playing
D.was playing