题目

某温度下，在一个2L的密闭容器中，加入4molA和2molB进行如下反应;3A(g)+2B(g)4C(s)+2D(g),反应一段时间后达到平衡，测得生成1.6molC,则下列说法正确的是 A.该反应的化学平衡常数表达式是K=                B.此时，B的平衡转化率是40% C.增大该体系的压强，平衡向右移动，化学平衡常数增大 D.增加B，平衡向右移动。B的平衡转化率增大Parents today also worry about their children’s diets. Some doctors give the following advice:     (   ) 【小题1】 According to the doctors’ advice ,what does junk food include ?A．milk and vitamins.B．Fruits and sugar. C．Vegetables and salt.D．Fat, oil, salt and sugar.(   ) 【小题2】In this passage, doctors think that teenagers should eat more ______ .A．food with no vitamins. B．fat and sugar C．vegetables and fruitsD．salt and oil(   ) 【小题3】The best title for this passage is ______ .A．Bad Habits B．junk FoodC．unhealthy Food D．advice on Healthy Eating