题目

Years ago, a farmer and a baker(面包师) were neighbors. Each week, the farmer would sell a kilo of butter to the baker. And at the same time, the baker would sell the farmer a kilo of _______. This kind of relationship _______ for some time.One day, the baker decided to _______ the butter that the farmer sold him. _______, he found that the butter was not a full kilo. The baker was quite _______ with this because he _______ the full price for it. He thought the farmer cheated(欺骗) him and he took the farmer to the judge(法官).The judge asked the farmer if he weighted the butter _______在密闭容器中，反应N2(g)+3H2(g)2NH3（g）；ΔH＜0， 达到甲平衡。在仅改变某一条件后，达到乙平衡，改变的这一条件是A．增大压强B．升高温度 C．增大N2的浓度D．加入适当催化剂