The nurse is assessing a pregnant woman in the clinic. In the course of the assessment, the nurse learns that this woman smokes one pack of cigarettes per day. The first step the nurse should take to help the woman stop smoking is to

A. assess the client’s readiness to stop.
B. suggest that the client reduce the daily number of cigarettes smoked by one-half.
C. provide the client with the telephone number of a formal smoking cessation program.
D. help the client develop a plan to stop.

把下面六个图形分为两类，使每一类图形都有各自的共同特征或规律，分类正确的一项是（）。

A．①②③ ④⑤⑥

B．CD③④ ②⑤⑥

C．①③⑥ ②④⑤

D．①③⑤ ②④⑥