Ок,я тупая хэлп номер 4,заблаговременно спасибо

1 A curved piece of glass is called a lens.

2 People began to make eyeglasses in the 13th century.

3 They made things look bigger.

4 It was Hans Zippershey.

5 They were 30 times bigger.

6 He studies the dark skies, the Moon, the Sun and planets going around Jupiter.

7 He discovered Jupiter's satellites.