单项选择题

What does the boy usually do when he is on line

A．Chatting.
B．Exploring catalogues of faraway libraries.
C．Playing orders for goods.
D．Writing application letters.
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单项选择题
When was the first case of AIDS reported.
A．1980.
B．1982.
C．1985.
D．1981.
单项选择题
What does AIDS stand for
A．Acknowledged Immune Disable System.
B．Acquired Immune Deficiency Syndrome.
C．Acquired Impossible Disable System.
D．Acknowledged Impossible Deficiency Syndrome.
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