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
The Sony Dream Robot was ________.
A．the first human-like entertainment robot developed by the Sony Corp
B．as capable as the QRIO of speaking, dancing, singing and walking
C．largest among all the entertainment robots developed by the Sony Corp
D．the first entertainment robot sold at the market by the Sony Corp
单项选择题
After children have helped to set the table with impressive accuracy, they ________.
A．are able to help parents serve dishes
B．tend to do more complicated housework
C．are able to figure out the total pieces
D．can enter a second-grade mathematics class
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