Zhang Heng invented the world’s first water-powered armillary sphere and the world’s first seismometer.
举一反三
- The world's first robot was made by Russians.
- What was invented by Zhang Heng to detect a distant earthquake? A: star catalogue B: seismometer C: sundial D: compass
- NASDAQ is the world’s first electronic stock market.
- ____is generally regarded as the world's first official paper money.
- China is the world's first largest aviation market nowadays.