The truck gained momentum as it rolled down the steep road.
A: motive
B: energy
C: force
D: dilemma
A: motive
B: energy
C: force
D: dilemma
举一反三
- How can the woman get to Jim’s A: Go down the road and turn left. B: Go down the road and turn right. C: Turn left and follow a road.
- Which of the following expressions is not correct (不正确)? A: If a system is only acted by conservative forces （保守力）, the mechanical energy（机械能）must be conserved （守恒）. B: If net external force is zero then the linear momentum of the system must be conserved. C: If net external force is zero, then the mechanical energy of a system must be conserved. D: If net external force is zero, then the mechanical energy of a system may not be conserved.
- What is the full name of the Belt and Road or the Belt and Road Initiative? A: The Silk Road Economic Belt and the 21st-Century Maritime Silk Road. B: The Silk Road and the 21st-Century Maritime Silk Road. C: The Silk Road Economic Belt and the Maritime Silk Road. D: The Silk Road Economic Belt and the 21st-Century Silk Road.
- The lorry lost its __________ as it tried to ascend the steep hill. A: memento B: membrane C: momentous D: momentum
- What has gained more momentum over the last decade?