在借贷记账法下，负债类账户与成本类账户的结构截然相反。()
参考答案：对
The nurse was very kind to the boy at first, but finally, her ____ gave out and she lost her temper.
A．patience
B．violence
C．presence
D．independence
以下铁存在形式最易被人体吸收利用的是
A．离子铁B．非血红素铁C．植物性食物中的铁D．铁蛋白E．Fe(OH)3
