| 1 | Graphite is used in making lead pencils. | |
| 2 | Graphite is a soft black substance. | |
| 3 | About half of all Soviet reactors employgraphite rather than water. | |
| 4 | Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. | |
| 5 | Imagine climbing diamond mountains, or hiking around the graphite shores of a lake of tar. |