单项选择题
At a rough estimate,Nigeria is（）Great Britain.
A.three times as big as
B.three times as bigger as
C.as three times big as
D.as three times gigger as
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相关考题
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单项选择题
There is a serious liability（）performance and fuel efficiency.
A.in time of
B.in case of
C.in terms of
D.in honour of -
单项选择题
Although recent years have seen（）reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing.
A.substantial
B.substance
C.submit
D.subjective -
单项选择题
The number of such vehicles（）steadily increasing.
A.have been
B.had been
C.having been
D.has been
