单项选择题

A．Sending e-mails.
B．Learning things.
C．Chatting in chat rooms.
D．Collecting information.
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单项选择题
A．The woman’s friend.B．Bill’s classmate.C．The woman’s colleague.D．Bill’s workmate.
A．The woman’s friend.
B．Bill’s classmate.
C．The woman’s colleague.
D．Bill’s workmate.
单项选择题
A．The speculations of Thales.B．The forces of electricity, magnetism, land gravity.C．Aristotle’s natural science.D．Galileo’s discoveries.
A．The speculations of Thales.
B．The forces of electricity, magnetism, land gravity.
C．Aristotle’s natural science.
D．Galileo’s discoveries.
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