___Some factory jobs are now done by robots and the robots are controlled by computers. Our bankAccounts are managed by computers. At the airport, our tickets are sold by a computer. Certainly, many of these operations are made more efficient by computers, but our admiration is sometimes mixed with unsafe feelings. And this lack of safety is caused by the fact that we do not know how computers do these things, and we really don t know what they might do next.
选项：

A:Does this sound familiar?
B:This is not the world we know.
C:Our feelings toward people are often complex
D:But we can find out how computers work.
E:These computer wizards have learned to use theComputer and search for new tasks for their machines.
F:The fact is that every day it seems that computers take control of another area ofour lives.