题目内容
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[单选题]
____ is a characteristic of all successful businessmen.
A.Economy
B.Ambition
C.Prohibition
D.Economics
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A.Economy
B.Ambition
C.Prohibition
D.Economics
David believes that_______.
A.robots will be of more and more human characteristics
B.robotic toy industry will develop fast
C.scientists can learn from robot films
D.old people need to take care of robots at home