阅读下列短文,从每题所给的 A、B、C、D 四个选项中选出最佳答案。
A
If you have your own Acme Rocket Launcher, you can create rockets that show off yourself.
All you need is your Acme Rocket Launcher and a few simple household tools: a 500 ml plastic cola bottle, scissors, coloured paper, a board and glue.
What to do
Step 1: Clean the cola bottle from outside to inside and make it dry.
Step 2: Use coloured paper to draw one large and three small triangles(三角形) on the board. Cut out the triangles.
Step 3: Roll(卷起) the large triangle so that two of its sides touch and it forms a rocket's nose cone(前锥体). Glue the sides of the cone so that it holds its shape.
Step 4: Glue the only nose cone to the bottom of the bottle to be the top of the rocket.
Step 5: Glue the smaller triangles to the other end of the cola bottle, around its opening. The triangles will be the tail fins(尾翼).
Follow the instructions with your Acme Rocket Launcher and have a blast(爆炸).
() 1. How many triangles will be cut out for making the rocket?
A. One.
B. Two.
C. Three.
D. Four.
() 2. What can you get from Step 4?

() 3. In which section of a newspaper would you probably read the text?
A. DIY science.
B. Music world.
C. Story world.
D. Sports news.

1. D 2. C 3. A

1. 细节理解题。根据文中Step 2的描述"Use coloured paper to draw one large and three small triangles on the board. Cut out the triangles."可知，一共要剪出1个大三角形和3个小三角形，总计4个。
2. 细节理解题。Step 4的操作是将做好的火箭前锥体粘在可乐瓶的底部，作为火箭的顶部，对应选项C的图示：瓶身上方固定了锥形的头部，符合该步骤完成后的形态；A是剪好的全部三角形、B是单独的前锥体、D是处理好的空瓶子，均不符合Step4的结果。
3. 推理判断题。本文是教读者利用日常材料动手制作小火箭的操作指南，属于手工科学制作内容，最可能出现在报纸的DIY科学板块。