写 作 ：
        请以“再次           ”为题目，写一篇文章。
        要求：①在横线处填写一个词或短语，将题目补充完整，然后写作。②可以写你的经历、见闻，也可以写你的感悟、认识。③可以大胆选择你最能驾驭的文体进行写作。④文中不要出现真实的地名、校名、人名等，否则会被扣分。⑤抄袭是一种不良行为，相信你不会照搬别人的文章，否则会影响你的成绩。⑥考虑到内容的充实，文章不要少于500字。

下列故事不属于林冲的是（       ）

阅读理解B
    Last Friday night l went to a great party．It was a birthday party for my teacher Mrs Brown．Students in my class all went to celebrate Mrs Brown's 40th birthday．We began to arrange(筹备)the party two weeks ago，but Mrs Brown knew nothing about it．
    We all met at a restaurant at 6：45 pm．There were 30 people．Mrs Brown's son took her to the restaurant and they arrived at seven o'clock．Just before seven，we all stayed in one room of the restaurant and made the room dark．
    When they got to the restaurant．Mrs Brown's son asked her to go into the room first．Then we all shouted．"Surprise!”
    Mrs Brown was really surprised．She jumped when she heard us．Then we sang Happy Birthday To You and she knew what was happening，We all had a great dinner and then a delicious birthday cake．
    For her birth-day,Mrs．Brown got a beautiful quilt(被子).We printed our photos on it．So it was a very special quilt．
    Mrs Brown enjoyed her evening，and we enjoyed it too．
根据材料内容选择最佳答案。

如果（ $\frac{a^3}{b^2}$ ）²÷（ $\frac{a}{b^3}$ ）²=3，那么a⁸b⁴等于（   ）

以DNA的一条链“…﹣A﹣T﹣C﹣…”为模板，经复制后的子链是（  ）