战略采购属于事前工作，供应管理属于事中工作，供应商绩效考核以及更换供应商属于事后工作

若直线y=kx+b是曲线y=lnx+2的切线，也是曲线y=ln（x+2）的切线，则b=（）。

医生准备为肝癌病人进行肝动脉插管化疗前，要获得病人的知情同意，其道德价值不包括

A．维持社会公正
B．保护患者自主权
C．解脱医生责任
D．协调医患关系
E．保证医疗质量

21～22. 某混凝土重力坝最大底宽75m，横缝间距20m，纵缝间距25m。坝体稳定温度场计算已完成，坝体基础约束区稳定温度为7°C。水泥选用大坝水泥，根据水泥品种和用量，水泥水化热引起的温升值为22°C。拟在秋季浇筑基础部位混凝土，坝址处月平均气温15°C，月平均水温8°C，每m3混凝土材料用量如下：水—110kg，水泥—208 kg，卵石—1712 kg，砂—468 kg。

根据该坝施工总进度计划，连续4个月的月平均高峰浇筑强度为2.0万m3，配备运浇机械时，月不均衡系数取2.0，月工作小时数取500小时，坝体基础块层厚1.5m，采用平层浇筑法，铺层厚度0.5m，混凝土初凝时间132分钟，运输时间（包括装卸运）18分钟，混凝土运输延误系数取0.85，混凝土施工的运浇设备能力应不小于多少？

A．164 m3/h

B．80 m3/h

C．159 m3/h

D．155 m3/h

局灶性或全身性癫痫发作是星形细胞肿瘤最重要的临床表现。神经功能障碍和颅内压增高常常在病变后期出现。

There are many kinds of friends. Some are always (1) you, but don’t understand you. Some say only a few words to you, but understand you. Many people will step in your life, but only (2) friends leave footprints.

I shall always recall the autumn and the girl with the (3) . She will always bring back the friendship between us. I know she will always be my best friend.It was the golden season. I could see the yellow leaves (4) with the cool (5) . In such a season, I liked walking alone on the roads covered with leaves, (6) to the sound of them.Autumn is a (7) season and life is uninteresting. The free days always get me (8) . But one day, the sound of a violin (9) into my ears like a stream flowing in the mountains. I was so surprised that I jumped to see what it was. A young girl, standing in the wind, was (10) in playing her violin.

I had (11) seen her before. The music was so nice that I listened quietly. Lost in the music, I didn’t know that I had been (12) there for so long but my existence did not seem to disturb her.Leaves were still falling. Every day she played the violin at the comer of the building (13) I went downstairs to watch her performance. I was the only listener. The autumn seemed no longer lonely and life became (14) . (15) we didn’t know each other, I thought we were already good friends. I believe she also loved me.Autumn was nearly over. One day, when I was listening carefully, the sound suddenly (16) . To my astonishment, the girl came over to me.

"You must like music from the violin." she said."Yes. And you play very well. Why did you stop’." I asked.Suddenly, a (17) expression appeared on her face and I could feel something unusual."I came here to see my grandmother, but now I must leave. I once played very badly. It was your listening every day that (18) me. " she said."In fact, it was your playing (19) gave me a meaningful autumn," I answered, " Let’s be friends. "The girl smiled, and so did I. I never heard her play again in my life. I no longer went downstairs to listen to her. Only thick leaves were left behind. But I will always remember the fine figure of the girl. She is like a (20) —so short, so bright, like a shooting star giving off so much light that makes the autumn beautiful.

第（6）空应选择（）

A.watching 

B.listening 

C.seeing 

D.hearing