Some of the earliest mechanical devices were designed to raise water from streams for the irrigate of crops.()
A: earliest mechanical
B: were designed
C: raise
D: irrigate
A: earliest mechanical
B: were designed
C: raise
D: irrigate
D
举一反三
- 中国大学MOOC: Who were some of the earliest Confucians?
- Mud from the bottom of the pond can be used to ________ the crops. A: sow B: irrigate C: fertilize D: weed
- who were the earliest invaders in England?
- The earliest kites were made of_______.
- As its name suggests, a space elevator is designed to raise things into space.
内容
- 0
The earliest paintings were found on pottery pieces.
- 1
The earliest known settlers on the British Isles were ( ).
- 2
Chinese kites in ancient times ________ in the shape of birds. A: design B: had designed C: were designed D: have been designed
- 3
The first paragraph mainly talks about ______. A: the problems caused by river water B: the necessity to irrigate the field C: the water shortage in some countries D: the canals carrying water to fields
- 4
The success of mechanics in discovering reliable and useful laws of nature suggested to Galileo that all nature is designed ______________ mechanical laws.