单项选择（每题1分）
Is this the reason _____ she explained in the report for her success in the job?
| A．what | B．that | C．how | D．why |
The question for them was to find out whether bees could tell each other the exact position of a feeding place.
| A．left | B．leaving |
| C．remained | D．remaining |
The primate brain is larger than of other animals.
| A．those | B．what | C．this | D．that |
After designing more experiments,they were able to clarify the procedure bees communicate information that they use to find and fetch food.
| A．by which | B．in which |
| C．by that | D．for which |
It was also apparent that the wagging dance, the bee moved sideways,sent another message.
| A．which | B．where | C．that | D．what |
All the bees had been at nearby feeding place were doing the circling dance.
| A．which | B．what | C．that | D．how |