Вставьте в предложения пропущенные слова, используя данный ниже список. Chief, building, means, civilization, barriers, bracket, were embedded, cantilever, supports, extending, side, suspended, beam, suspension, woven mats, by means of, bank, handrails, crossing.
1. The story of bridge-___ is the story of ___.
2. Great rivers are important ___ of communication, for in many parts of the world they have been, and still are, the ___ roads.
3. But they are also ___ to communication.
4. From this, at a later stage, a bridge on a very simple ___ or ___ principle was evolved.
5. Timber beams ___ ___ into the banks on each ___ of the river with their ends ___ over the water.
6. These made simple ___ for a central ___ reaching across from one bracket to the other.
7. A simple bridge on the ___ principle was made by early man ___ ___ ___ ropes.
8. Two parallel ropes ___ from rocks or trees on each ___ of the river, with a platform of ___ ___ laid across them, made a secure ___.
9. Further ropes as ___ were added.