A:twenty-three thousand, four hundred and fifty-six
B:twenty-three thousand and four hundred fifty-six
C:two three thousand and four five six
D:two three thousand, four and five six
化合物A,B,C为同分异构体,A经过臭氧还原水解成CH3﹣CHO和CH3﹣CH2﹣CH2﹣CH2﹣CHO,用同样的方法处理B,生成如图1,用同样的方法处理C,得到CH3﹣CHO和如图2.请写出A,B,C的构造式.
弹簧测力计是测量力大小的工具,在生活中常常被叫做____。
— What did the farmer do ________the farm?
— He_______ the chickens.