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单项选择题

What is the relationship between the two speakers

A．Employer and employee.
B．Salesman and customer.
C．Advertiser and customer.
D．Colleagues.

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单项选择题Which of the following factors may lead to greater temperature changes at the poles than elsewhere on the planet

A．The albedo of the poles will be larger if snow melts.
B．the albedo of snow is larger than that of the exposed dark earth if snow melts.
C．More energy is needed to warm up the Arctic since the atmosphere there is thinner.
D．Less solar energy is lost in volatilization at the poles than at the equator.

单项选择题What can the program benefit the U.S. Defense

A．To Help recognize the outer space threat such as lasers, anti-satellite weapons.
B．To make space-based weapons.
C．To develop satellites that help the military do everything.
D．To help spy enemies.

单项选择题What product are they talking about

A．Kitchen.
B．Deep-freezer.
C．Mobility units.
D．Cake mixer.

单项选择题Norman Spinrad ended up repatriating to New York because ______.

A．he couldn’t afford the high rent in Paris
B．he wasn’t sure if he could afford the rent if he has to put 20,000 dollars in a bank
C．he had been treated very well in France
D．he liked the lifestyle in Paris

单项选择题What’s the reason why U.S. elevates the program according to Rumsfeld

A．To make the country more powerful.
B．To meet 21st century national security needs.
C．To recognize the threat from outer space.
D．To prevent the hostility of other countries.