The supply of oil can be shut off unexpectedly at any time, and in any case, the oil wells will all run dry in thirty years or so at the present rate of use.
举一反三
- The short run can be defined as any period of time:
- After finished vulcanization, turn off the oil pump, and shut off the total power.
- I asked him for some oil, but he hadn't_______. A: any B: some C: oil D: one
- 中国大学MOOC: By law, any American citizens over 35 years can run for the presidency.
- By law, any American citizens over 35 years can run for the presidency. A: 正确 B: 错误