By watching the armillary sphere made by Zhang Heng, one could find out ______.( ).
A: the rising and falling of the stars
B: how an eclipse developed
C: when an earthquake would strike
D: the rotation speed of the earth
A: the rising and falling of the stars
B: how an eclipse developed
C: when an earthquake would strike
D: the rotation speed of the earth
举一反三
- Zhang Heng invented the world’s first water-powered armillary sphere and the world’s first seismometer.
- What was invented by Zhang Heng to detect a distant earthquake?
- He asked his teacher () . A: if there was a monster in Loch Ness B: when was Albert Einstein born C: how would the scientists find out the result D: where could he find the library
- The ancient people believed that ______. A: the earth was spinning on the axis of the sky B: the sky was a hollow sphere spinning around the earth C: the patterns of stars on the sky would never change D: the stars around the sky were not stationary
- What was invented by Zhang Heng to detect a distant earthquake? A: star catalogue B: seismometer C: sundial D: compass