网上商户交易费、（）的收取采取系统自动扣收的方式。
A、手续费
B、开通服务费
C、年费
D、工本费
参考答案：C
We should eat fruit and vegetables, but meat. It’s good for our health.
A．less, more B．more, more C．more, less
混成复合肥
