单项选择题

Most supermarkets need a very spacious floor area, sometime ______ that of an ordinary shop.

A．at least ten times as big as
B．at least as ten times big as
C．at least as big as ten times
D．ten times as at least big as
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单项选择题
She did not feel very well at the moment, but she'll soon ______.
A．draw up
B．clear up
C．stand up
D．pick up
单项选择题
Small incomes have brought down the birth ______.
A．ratio
B．speed
C．interest
D．rate
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