Luyện tập đề thi IELTS Listening History Of Time-Measurement | IELTS Listening Practice

History of time-measurement

Primitive measurements by observing
Two time keepers:
The 1.            31﻿
Natural events, such as winds and rains, rivers flooding, plants flowering , and the cycles of breeding 2.            or 32 behaviour.
Precise measurements
They became important for organising activities for:
﻿3.            33﻿
﻿4.            4﻿
The oldest time keepers were discovered in Mesopotamia and 5.            ﻿.

Time Keeper
Disadvantages
The sundial
In different parts of the year, the time for day 6.            
.
The clepsydra (Water clock)
The changing pressure and 7.            
     were what the flow of water still relied on.
The 8.            
﻿
The time duration was 9.            
.
Fire candle clock
The burning  10.            
      or the rate of burning, was subject to the candles wax.

Time Keeper	Disadvantages
The sundial	In different parts of the year, the time for day 6. .
The clepsydra (Water clock)	The changing pressure and 7. were what the flow of water still relied on.
The 8.	The time duration was 9. .
Fire candle clock	The burning 10. or the rate of burning, was subject to the candles wax.

. . .

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