这个标志是何含义？（）
A．涵洞
B．水渠
C．桥梁
D．隧道
参考答案：D
根据所学课文填空。
山不在高，____________。水不在深，____________。斯是陋室，____________。
In relation to employment law, explain the extent to which an employer may make signifi cant changes to the conditions of a labour agreement. (10 marks)
