苯环上的碳与碳之间的连接是介于单键和双键之间的独特的键。( )
参考答案：对
It is hard to imagine what I ___ today if I hadn’t been admitted to Nankai Middle School 15 years ago.
A．would have done
B．will do
C．am doing
D．would be doing
设有二维数组A［1..8，1..10］，其每个元素占4个字节，数组按列优先顺序存储，第一个元素的存储地址为200，那么元素A［3，4］的存储地址为
A．292
B．304
C．328
D．396
