The author is ______ about the future development of robots.

A．although robots can do much dangerous and tiring work, humans are superior
B．although humans are superior, robots can do much better in many areas of work
C．robots will replace humans in more and more fields
D．robots are superior to humans because they can do much work that humans can't do

A．he likes his job
B．he works non-stop
C．he is very punctual
D．he repairs clocks and watches