ON WHAT DID THE ANCIENT EGYPTIANS BASE THEIR CALCULATIONS

8. - DAP AN DE THI GVDG TRUONG
Tiếng Anh DAP AN DE THI GVDG TRUONG

8. On what did the ancient Egyptians base their calculations?

A. Knowledge of the earth’s surface. B. Advanced technology.

C. Advanced tools of measurement. D. Observation of the celestial bodies.