A red light is usually a ______ of danger.
A red light is usually a ______ of danger.
A flashing red warning light on a CRT normally indicates:
A flashing red warning light on a CRT normally indicates:
Whoever drives through the red light should be fined.
Whoever drives through the red light should be fined.
If the red object is illuminated with green light it appears<br/>________. A: black B: red C: green D: white
If the red object is illuminated with green light it appears<br/>________. A: black B: red C: green D: white
Among the traffic lights, red light is placed ______. A: at the bottom B: in the middle C: at the top D: below the green light
Among the traffic lights, red light is placed ______. A: at the bottom B: in the middle C: at the top D: below the green light
When we drive the car,we are ______ to stop the car at a red light
When we drive the car,we are ______ to stop the car at a red light
When the white light hits ____object, the light will not be absorbed, but it will be bounced out. A: red B: blue C: black D: white
When the white light hits ____object, the light will not be absorbed, but it will be bounced out. A: red B: blue C: black D: white
(Red and green) light, (if mixing) (in) the right proportion, (will give) us yellow. A: Red and green B: if mixing C: in D: will give
(Red and green) light, (if mixing) (in) the right proportion, (will give) us yellow. A: Red and green B: if mixing C: in D: will give
If it is green light you can ,the red light you should .( ) A: go ;stop B: stop ;stop C: stop,go D: go;go
If it is green light you can ,the red light you should .( ) A: go ;stop B: stop ;stop C: stop,go D: go;go
If a soldier took a red light for a green light he probably would（） A: be left behind alone B: advance along C: go with the others D: stop
If a soldier took a red light for a green light he probably would（） A: be left behind alone B: advance along C: go with the others D: stop