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2. 乐乐分享了美国人Lipman的发明故事，并邀请大家用“解决问题五步法”来梳理这个发明过程。请你读一读，选一选，完成表格。
A. Lipman always loses his pencils and erasers.
B. He thinks, “I can put the eraser and pencil together!”
C. His erasers are very small. His pencils are very short.
D. Now eraser-tipped pencils are everywhere.
E. He uses glue. The rubber falls off. He uses a small piece of iron sheet（铁片）and puts it around the rubber. This time, it works!
A. Lipman always loses his pencils and erasers.
B. He thinks, “I can put the eraser and pencil together!”
C. His erasers are very small. His pencils are very short.
D. Now eraser-tipped pencils are everywhere.
E. He uses glue. The rubber falls off. He uses a small piece of iron sheet（铁片）and puts it around the rubber. This time, it works!
答案
① A ② C ③ B ④ E ⑤ D
