单项选择题

The production of tin ore in the United States is relatively insignificant, _______ less than one hundred tons annually.

A．amounting to
B．in the amount
C．amounts to it
D．to the amount of
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单项选择题
Only rarely _______ neuroses leave a person unable to function in everyday situation.
A．it exposed
B．are
C．do
D．that
单项选择题
According to psychologists, a person's attention is attracted _______ by the intensity of different signals as by their context, significance, and information content.
A．much not so
B．not so much
C．so not much
D．so much not
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