单项选择题

A．She forgot to call her mother.
B．Prof. Smith gives lectures regularly on TV.
C．Her mother is a friend of Prof. Smith’s.
D．She did see Prof. Smith on TV.
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单项选择题
What do we learn about America’s manufacturing in the 1950s（）

A．It generated just 12% of the gross national income.
B．It constituted 28% of the gross domestic product.
C．It was the biggest employer of American workers.
D．It was the most active sector of American economy.
单项选择题
A．He will be back in a minute to repair the computers.B．It will take longer to reconnect the computers to the Net.C．He has tackled more complicated problems than this.D．A lot of cool stuff will be available online tomorrow.
A．He will be back in a minute to repair the computers.
B．It will take longer to reconnect the computers to the Net.
C．He has tackled more complicated problems than this.
D．A lot of cool stuff will be available online tomorrow.
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