单项选择题

According to the author, the computer is an extension of our intellects. What, then, is used as an extension of our physical power

A．Science.
B．Engines
C．Industrialists.
D．Technology.
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单项选择题
The underlined word kitties in the second paragraph probably refers to ______.
A．classmates of Liu Jiao
B．brand names
C．Lin Jiao's friends
D．cartoon characters
单项选择题
The example of Liu Jiao shows that ______.
A．more and more students own mobile phones in China
B．it' s very convenient for students to communicate with each other by mobile
C．sending messages by mobile is becoming a hot new craze among students
D．students prefer mobile phones to the Internet
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