单项选择题


A．designs
B．tools
C．devices
D．facilities
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单项选择题
A．VirtuallyB．HardlyC．DefinitelyD．Potentially
A．Virtually
B．Hardly
C．Definitely
D．Potentially
单项选择题
Under the cover of different brands,______.
A．the products have great difference from each other
B．the products are more or less the same
C．the manufacturers tend to differ very little
D．the brands may vary only in name
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