4. （ ）When a bee has found some food, it does a little dance in the air.
举一反三
- A bee can tell other bees by doing tail-wagging dance that he has found food, which shows that bees have language.
- What does the professor mean when he says this A: Little is known about defining a substance as an air pollutant. B: The substance isn’t an air pollutant when there is a very little in the air. C: The substance can’t be judged to be an air pollutant only from its actual concentration level. D: The actual concentration level means little to peopl
- The air inside a house or office building often has higher concentrations of contaminants ____ heavily polluted outside air. A: than does B: more C: as some that are D: like of
- - I'd like to know _____ for the party.- I have no idea. A: why did she buy so little food B: what she has prepared C: whether will she dance D: when is she leaving
- A bee that has found honey is able to __...o collect the honey.