[TẶNG BẠN] TRỌN BỘ Bí kíp học tốt 08 môn
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V. Fill in each blank with one suitable word.
How was a year defined in Prehistoric times? No one knows for (1) ......................., but it is thought that people might have (2) ....................... monuments, such as Stonehenge in England, to track the sun’s position in the sky in order to (3) ....................... the length of a year. The early Romans created a calendar based (4) ....................... the cycles of the moon. However, when Julius Caesar (5) ....................... Emperor of Rome around 45 B.C., he introduced the Julian calendar. This calendar marked time (6) ....................... measuring the Earth’s revolution (7) ....................... the sun. A few centuries later, Pope Gregory XIII appointed a team of learned men to help make the Julian calendar (8) ....................... accurate. It became known (9) ....................... the Gregorian calendar, and it is the system we still use (10) ....................... to chart the passage of year.
Tracking time
