Variant 10 share your ideas about the text from the history of aviation

In the 14^th century.

4. 
   Who was the first to study the problem of human flight?
   

Leonardo de Vinci.

5. 
   Describe the flying machine designed by Leonardo de Vinchi.
   

It was a type of flying machine the wings of which were operated by a men.


III. Translate the sentences into English:
1.Инсон парвозининг илмий тамоиллари буюк олим Леонардо де Винчи томонидан ўрганилган. (Научные принципы полета человека изучались великим ученым Леонардо де Винчи.)
The scientific principles of human flight were studied by the great scientist Leonardo de Vinci.
2.Леонардо де Винчи хаво оқимини ўрганиб, биринчи учиш аппаратини яратди. (Леонардо де Винчи изучал потоки воздуха и создал первую летающую машину.)