1. C.You decide to present your point of view; you explain your reasoning seriously to your friend.
    c.你决心要表明你的观点；你认真向朋友解释你的理由。

2. We all laughed at the absurdity in his reasoning.
    我们都嘲笑他的推理的荒谬。

3. What´s the hypothesis of this reasoning?
    这个推理的前提是什么?

4. However, King´s theory was thought unconvincing by many people as it was based upon reasoning, not experimental proof.
    然而，金的理论被很多人认为是不能令人信服的，因为它是根据推理得来的，而不是通过实验证明的。

5. Your reasoning is right theoretically.
    你的推理在理论上是正确的。