Упр.21 Unit 3 Рабочая тетрадь ГДЗ English Михеева 9 класс

Read the text and complete it with the derivatives of the words on the right.

Spectacles

Transparent objects were used to help (1) ______ defective eyesight in antiquity: the best-known case is that of the Emperor Nero, who watched (2) ______ performances in the arena holding in front of one eye a jewel with (3) ______ curved facets.

Lenses placed close to the eyes were first used towards the end of the 13th century. Nothing is known of the (4) ______ inventor, or of the date or place of discovery, as it was the work of an (5) ______ illiterate artisan, but Edward Rosen fixes the period of discovery to the five years after 1280.

The creator of this (6) ______ invention was probably a glass (7) ______ worker who made ornaments and glass discs for windows.