已知5-(-2x+y)=6,则2x-y=( )
A.-1
B.0
C.1
D.2
∵5-(-2x+y)=6,
∴5+2x-y=6,
∴2x-y=1.
故选C.
You can never imagine what great difficulty I had ________ his parents.
A.finding
B.of finding
C.to find
D.about finding
一足月新生儿,顺产,生后1分钟Apgar评分8分,HR70次/分,轻度三凹征,口周青紫,双肺闻及湿啰音。出生1小时后上述症状明显改善,HR降至45次/分,除仍有口唇轻度青紫外,余均正常,最可能的诊断是()
A.产前感染性肺炎
B.正常生理性特点
C.产时感染性肺炎
D.新生儿肺透明膜病
E.吸入性肺炎