高手请入内3？

The professor could hardly find sufficient grounds _______ his arguments in favour of the new theory.A) to be based on B) to base onC) which to base on D) on which to base这句话什么意思，选什么好呢？

热心网友

D) on which to base教授几乎找不到充分的根据来证明他新理论中提出的论点.

热心网友

选A教授不能找到足够的论据来证明他的新理论的论点击.