单项选择题

The robots can locate colored balls by means of ______.

A．a charge-coupled device
B．two cameras
C．two contact sensors
D．a digital detector
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单项选择题
Yoshihiro Kuroki ________.
A．is excited when the robots are performing a traditional Japanese dance
B．keeps silent because he is a little unsatisfied with the new product
C．witnesses the creation of a series of entertainment robots
D．is an executive manager of Sony Corp.
单项选择题
Which of the following is the most suitable title of this passage
A．New Entertainment Robots Produced in Japan.
B．QRIO--the Robot Dancers.
C．Robots--Man's Best Friend.
D．An Extraordinary Performance in Sony's Lab.
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