题目

 下列四个反应的生成物都是C,若C的化学式为A2B5,则正确的化学方程式应为(   ) A.2AB2+B2=2C                    B.3AB2+B2=2C C. 4AB2+B2=2C                  D.AB2+4B2=2C 答案:C It was ________ late to catch a bus after the party; therefore he called a taxi.    A. too very     B. much too     C. too much      D. far
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