题目

A. concerts B. contacts C. various D. imagine E. situationsCan you 【1】 the world without money? It is quite impossible. Money-they say—makes the world go round. Why is that so? Well, think of all the 【2】 in which you have to pay for the things you buy—like food, clothes, medicine, newspapers or for the services you get, like a new hair style or car repairs. Think of the entertainment you have to pay for-tickets to 【3】 ,sports matches, favorite books, CDs and holidays. You can have it all if you’ve got the money.Money has played an important role in every civilization. It has 10L密闭容器中有1mol N2O4气,在一定条件下反应进行到4 min达到平衡: N,测得容器内每100mL混合气中含NO2  0.368 g,下列说法正确的是(   ) A.N2O4的分解率为80% B.平衡时N2O4与原N2O4物质的量之比为1∶2 C.若温度不变,平衡体系的压强为原来的1.4倍 D.前4 min NO2的平均反应速率为0.02 mol•L-1•min-1  
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