单项选择题

A．He is fifty years old．
B．He likes swimming．
C．He is very tall．
D．He is a worker．
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单项选择题
What’s the weather like today（）

A．It’s hot.
B．It’s cold.
C．It’s sunny.
D．It’s rainly.
单项选择题
In the passage, it’s said that hackers may attack the Internet system of all the following institutions except
A．banks
B．telephone companies
C．universities
D．government departments
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