Starting a stamp collection is easy and not very expensive. Before you start, you need to decide what kind of stamps you want to collect. Most people collect stamps that they are interested in: a certain country or an animal, a famous person or even a sport. Whatever you choose, you will find that there is a world of knowledge in stamps: you will learn about people, geography, building, history and culture.

You can collect stamps from letters, ask your friends to let you have their old stamps, or you can buy used stamps. When you get a letter with a stamp on it, carefully cut out the stamp. Leave lots of space around the stamp so that you will not damage it. Put the stamp in water and wait until you can safely remove the stamp. Carefully remove the stamp off the letter. Place the wet stamp between two clean pieces of paper. A stamp can get wrinkled(褶皱的) when it dries, so put some books on top.

小题1:What does the writer think of collecting stamps?

A．Hard

B．Expensive

C．Useful

D．Boring小题2:What does the underlined work “damage” mean?

A．损坏

B．保存

C．利用

D．删除小题3:What’s the correct order when we try to get a stamp on a letter?

①Remove the stamp off the letter.

②Place the wet stamp between two pieces of paper.

③Cut out the stamp.

④Put the stamp in water.

⑤Put some books on top.

A．①→②→⑤→③→④

B．③→④→①→②→⑤

C．④→①→②→⑤→③

D．③→①→④→②→⑤

白天，小枫同学在老师的指导下做了一个有趣的实验：找一个圆柱形的玻璃瓶，里面装满水．把一支普通铅笔放在玻璃瓶的一侧，透过玻璃瓶，可以看到那支笔，如图所示．如果把笔由靠近玻璃瓶的位置向远处慢慢移动，会看到什么现象？小枫记录了这个过程中所看到的现象，其中有错误的是（　　）

A．会看到铅笔尖逐渐变长

B．会看到至某一位置时，铅笔尖突然改变方向

C．会看到铅笔上有一条红、绿、蓝彩色光带

D．会看到铅笔倒立缩小的实像