肾的纵剖面颜色较深部位的名称和主要结构分别是（    ）

徐立平，中国航天科技集团公司高级技师。28年来，他冒着巨大的危险雕刻火药，被人们誉为“大国工匠”。0．5毫米是固体发动机药面精度允许的最大误差，而经他手雕刻出的火药药面误差不超过0．2毫。米，堪称完美。为了杜绝安全隐患，徐立平还自己设计发明了20多种整形刀具，有两种获得国家专利，一种被命名为“立平刀”。2016年2月被评为“感动中国2015年度人物”。

★王宽，河南郑州人，台上兢兢业业唱好戏，台下尽心尽力做善事。l998年退休后，王宽夫妇陆续收养了6名孤儿。为了供孩子吃饭穿衣、读书学艺，王宽放下一级演员的身段，去茶楼卖唱，一唱就是l6年，为了让别人多点戏，还自学了川剧变脸。如今，几个孩子都已长大成人，自食其力，而老两口却还在坚持资助老家的孩子，用行动传达爱的意义。2016年2月被评为“感动中国2015年度人物”。不同的经历、同样的精彩。

徐立平与王宽精彩人生的共同之处给你哪些感悟?

完形填空

    Last week I was in the boarding（登机）area of the airport excited about my Christmas trip home to see my parents. I was busy planning for the weekend,1 I was taken out of my daydreaming by an elderly woman talking 2 into her cellphone. She kept asking the person to 3 her where she was. She 4 the gate number again and again. She got a little louder each time she did that. Many people snickered（窃笑）because she was nearly 5 and thought how silly old people could be.

    Then I heard her say, “I'm 6, but I can't hear you. There seems to be something wrong with my hearing aid.” “That's too 7” I thought as I moved forward to board the flight. Then I noticed her 8 was becoming increasingly frantic（发狂似的）as she tried to understand the person on the other end of the phone. It was almost my 9 to board. I couldn't 10 looking back at the woman. It made me think how 11 I was to have my hearing. And I realized I could offer her some 12.

    I suddenly got out of the 13 and went to the woman. I showed her to 14 me the phone and shouted, “Let me help you. I'll tell you what the person is 15.” She looked at me and agreed 16. I took the phone from her,17 who I was, listened for a moment, and told the woman her husband was 18 her outside the airport as he could not enter the gate area. Finally, I pointed her in the 19 direction.

    It took me less than two minutes to finish the task, but my 20 in having been able to help her remains strong.

The athlete's years of hard training        when she finally won the Olympic gold medal.

在四棱柱 $P-ABCD$ 中，底面 $ABCD$ 为矩形，面 $PCD$ ⊥平面 $ABCD$ ， $PC$ = $PD$ = $BC$ = $\sqrt{2}$ ， $AB$ =2， $E$ 是 $CD$ 的中点．

（Ⅰ）求证： $AC$ ⊥ $PB$ ；

（Ⅱ）求BD与平面 $PAB$ 所成角的正弦值．