（）的快速发展，使得CAI的形式和功能都发生了重大的变革。
A.计算机技术
B.虚拟现实技术
C.网络技术
D.通信技术
参考答案：A
根据中文提示，完成句子
1. I felt ____________ (内疚的) about not visiting my parents more often.
2. The members of the board have decided to cut back on ____________. (产量)
3. _____________ of (不管,不顾) the consequence, he did whatever he liked.
4. He left his hometown with the ______________( 意图；目的) of travelling around the world.
5. In ___________, (大体上说) he did a good job.
6. Thank you for listening. Now let's open the ___________ (自由发言)for discussion.
HXD3型电力机车闭合主断路器时，应如何操作？
