单项选择题


A．have added to
B．has added
C．added to
D．adding to
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单项选择题
A．remarkablyB．certainlyC．hardlyD．fairly
A．remarkably
B．certainly
C．hardly
D．fairly
单项选择题
A．naturallyB．carefullyC．chemicallyD．physically
A．naturally
B．carefully
C．chemically
D．physically
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