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在钻研教材和了解学生的基础上，教师要设计教学活动如何进行，具体说，也就是要编写______、______和课时教学计划等三个计划。
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假设某程序语言的文法如下：S→a｜b｜(T)T→TdS｜S其中：VT=a，b，d，(，)，VNS，T，S是开始符号。考查该文法，称句型(Sd(T)db)是S的一个 (33) ，其中， (34) 是句柄： (35) 是素短语； (36) 是该句型的直接短语； (37) 是短语。 （33）处填（）。
假设某程序语言的文法如下：S→SaT｜TT→TbR｜RT→PdR｜P P→fSg｜e其中：VT=a，b，d，e，f，g，VNS，T，R，P，S是开始符号。那么，此方法是 (38) 方法。这种文法的语法分析通常采用优先矩阵，优先矩阵给出了该文法中各个终结符之间的优先关系 (大于，小于，等于，无关系)。在上述文法中，某些终结符之间的优先关系如下：b (39) a：f (40) g；a (41) a；d (42) d。 （38）处填（）。
就材料3和材料4，概括材料所反映的主要问题，并对该问题进行简单分析。要求：概括准确，分析透彻，条理清晰，字数不超过250字。
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 corner 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 (身影) 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.
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