The speed of light being extremely great, we cannot measure it by ordinary methods.
举一反三
- The great speed of light explains why we think we see things at the exact moment they are happening.
- Because of the great speed of light, we see a lamp light up almost at the exact moment （）. A: we turn it on B: when we turn on it C: that we turn on it D: which we turn it on
- We usually measure the processing speed in today’s computer according to the _________.
- Set methods are also commonly called ________ methods and get methods are also commonly called ________ methods.
- At this moment of great sadness, we cannot but __________ together with the nation for the loss of lives in the disaster.