Lighting the dark sky for a few seconds.
举一反三
- Prior to the formation of a tornado,_________. A: the sky is cloudy B: the sky is very dark C: the sky is cloudless D: a black line stretches across the horizon
- 中国大学MOOC: A good first impression is usually formed within the first few seconds.
- After been in exposed to normal lighting, dark adaptation (night vision) returns after a recovery period of about
- There are dark clouds in the sky; it looks as if it _______. A: would rain B: rained C: had rained D: is going to rain
- The idea puzzled me so much that I stopped for a few seconds to try to ____.