等腰三角形一边长为3，另一边长为6，则其周长是（ ） A．12 B．15 C．1

阅读理解。

     Life is like the four seasons. Now I am very old, but when I was young, it was the spring of my life.

I played a lot, and then I started school. I learned many new things. Like a flower, I grew bigger every day.

There were happy days and sad days, some days the sun shone, and some days it didn't. In my twenties, I

had a good job. I was strong and happy. Then I married and had a child. In those days I didn't have much

time to think or to play. Every day I was busy and worked hard. I started to get some white hair. The

summer of my life passed quickly.

     Then the days got shorter. Leaves fell from the trees. My child was a university student and then an

engineer. My home was much quieter. I started walking more slowly. One day I stopped working, I retired.

I had more time. I understood this was my autumn, a beautiful time when the trees change color and give us

delicious fruits.  

     But the days kept getting shorter and colder. Winter has come. I am older and weaker. I know I do not

have many days left, but I will enjoy them to the end.

1. What does the writer think his life is like?

A. spring

B. summer

C. autumn

D. four seasons

2. The writer was very busy in the _______ of his life.

A. spring

B. summer

C. autumn

D. winter

3. According to the passage, which of the following ages is during the autumn of his life?

A. 15

B. 33

C. 62

D. 87

4. The best title of the passage can be _______.

A. Four Seasons.

B. Four Seasons in My Life.

C. Four Season In a Year

D. My Life

商检法及其实施条例规定，须实施检验的进出口商品目录由国家质检总局制定、调整并公布实施。 ( )

除热清肺汤功效与作用

水泥硬化包括溶解、胶化、（）三个阶段

A.凝固

B.固化

C.结晶

D.分解

绘图题：绘已知线段五等分步骤图。