| 作者 (Author) | Kulling, Monica |
| Summary: Alexander Graham Bell is at the World's Fair with his amazing invention but wonders if anyone will stop and listen. | |
| 等级 (MML) | MM Level-2.4 |
| 年级 (IL) | Lower Grades (LG K-3) |
| 字数 (Words) | 804 |
| 类型 (Fiction) | Non-Fiction |
| 系列 (Series) | Step into Reading: Step 3; |
| Topic: Biographies/Autobiographies-Biographies/Autobiographies (All); People-Inventors; | |
