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单项选择题


A．He doesn’t know Jack.
B．He forgets to ask Jack.
C．Jack knows a lot about digital camera.
D．Jack probably knows nothing about digital camera.
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单项选择题It can be inferred from the passage that the most dangerous by-product of uranium mining and milling is ______.

A．solid mining wastes
B．the slurry in which the waste is stored
C．the radon gas that is emitted by the waste
D．the uranium that is recovered in the mining operations

单项选择题A．To the supermarket.B．To the restaurant.C．To the fitness club.D．To the university.

A．To the supermarket.
B．To the restaurant.
C．To the fitness club.
D．To the university.