It will be safer to walk in the streets because people will need to carry largeamounts of cash; virtually all financial ___ will be conducted by computer.
【单选题】听力原文:W: Oh, there is so much dirt on the floor. I wonder how it got there. M: Let me get the dust pan and brush. I'll clean it up for you. Q: What is the man going to do for the woman? (3)
【简答题】Aeronautical Surveillance System Air traffic is growing at a significant rate. There is also increasing demand for more operating flexibility to improve aircraft efficiency, and to reduce the impact o...