Humour is their “________”. They do not have to switch it on deliberately, and they cannot switch it off.
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举一反三
- Our plane is about to take off. Please ___________ your electronic devices.A. switch on B. switch off C. turn on D. turn down A: switch on B: switch off C: turn on D: turn down
- Ladies and gentlemen,please switch _______ your mobile phones!The plane is taking off. A: over B: on C: to D: off
- Which ____________ do I press to turn it off? A: switched B: switch C: switches D: switching
- Kids, will you please _____ the TV? It`s time to go to bed. A: switch off B: switch on C: put off D: put on
- Upon departure, please switch off / turn off the air-conditioner.
内容
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I ______ (switch off) the air conditioner, already.
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Both sides of the switch should be placed in the OFF position before turning the MASTER switch ON or OFF, starting the engine, or applying an external power sources. A: AVIONICS B: master C: TEST
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Always ______ your computer when you've finished. A: switch off B: put off C: take off D: send off
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Your phone need to be during meeting! ( ). A: open B: turn off C: close D: switch off
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简述if、if……else、switch、for、do……while语句的作用