Given the following inventory information about the Buckner Company: Year-end LIFO inventory of $ 6500. Year-end LIFO reserve of $ 2500. The current year’ s LIFO cost of goods sold is $15000. After tax income is $1600. The previous year’s LIFO reserve was $ 2000. What is the firm’ s after tax net income on a FIFO basis if the firm’ s tax rate is 40 percent

A．

B．

C．

用正确的化学符号填空：

（1）1个汞原子       ；

（2）2个碳酸分子       ；

（3）四个亚铁离子       ；

（4）最简单的有机物       。