问题
选择题
The US is ___ number 7, while the UK is _____ the 13th position.
A．on; in
B．in; at
C．at; in
D．of; on
答案
答案：C
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The US is ___ number 7, while the UK is _____ the 13th position.
A．on; in
B．in; at
C．at; in
D．of; on
答案：C