A 24-year-old client on the labor unit is being coached in the Lamaze method by her husband. On assessment, the nurse finds the client to be 5 cm dilated, 90% effaced, at +1 station with contractions coming every 2 to 3 minutes and lasting 35 to 40 seconds. The client has asked for pain relief. What’s the nurse’s best action

A. Check maternal blood pressure and pulse and fetal heart rate in response to contractions.
B. Realize that it’s too early to give pain medication, and encourage the husband to continue with the Lamaze coaching.
C. Arrange for a sonogram to determine fetal position.
D. Perform a vaginal examination to determine dilation, effacement, and station.

党的十七大报告指出：提高自主创新能力，建设创新型国家，是国家发展战略的核心，是提高综合国力的关键。这说明 [ ]

A．主要矛盾在事物发展过程中处于支配地位，起决定作用

B．矛盾的主要方面处于支配地位，起着主导作用

C．事物的性质主要是由主要矛盾的主要方面决定的

D．矛盾的主要方面与次要方面既相互排斥，又相互依赖