【C19】
A. on which
B. in which
C. which
D. what
According to the passage, what is beyond man's ability now is to design a robot that can______.
A. fulfill delicate tasks like performing brain surgery
B. interact with human beings verbally
C. have a little common sense
D. respond independently to a changing world
A．Because the woman was ignorant of the information.B．Because the woman has only worke
A. Because the woman was ignorant of the information.
Because the woman has only worked for a short time.
C. Because the man did not understand the rules.
D. Because the man was not sure about the deadline.
A．It's environmentally friendly.B．It's more efficient than other alternative fuels.C．I
A. It's environmentally friendly.
B. It's more efficient than other alternative fuels.
C. It doesn't destroy the ozone.
D. It's not economical to mass-produce.
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