单项选择题

A．applications
B．discoveries
C．inventions
D．innovations
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单项选择题
A．wheneverB．whereverC．whateverD．however
A．whenever
B．wherever
C．whatever
D．however
单项选择题
A．VirtuallyB．HardlyC．DefinitelyD．Potentially
A．Virtually
B．Hardly
C．Definitely
D．Potentially
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