中国移动以往每个标准机柜包装箱大约需要耗费木材多少千克（）
A、40kg
B、50kg
C、60kg
D、65kg
参考答案：A
Three days after Mrs White’s _______ necklace was found, she was _____ it.
A．lost; robbed
B．Missed; robbed of
C．lost; robbed of
D．missing; robbed
通信网的基本要素
