题目内容
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
A
by which是介词+which构成的定语从句,表方式。
by which是介词+which构成的定语从句,表方式。
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