我国海关通道分为______(亦称应税通道)和______(亦称免税通道)。
参考答案：红色通道 绿色通道
—I must thank you for taking the trouble to look after my sick mother.
—_______.
A．With pleasure
B．It doesn’t matter
C．It was no trouble at all
D．By all means
以下结构不属于中耳的是
A．鼓室B．骨迷路C．咽鼓管D．乳突窦E．乳突小房
