问题描述：
新概念2第4课后面的选择题第2题,为什么选B only one of these statements is true,which one?
a) Tim has been in Darwin for six months
b) It's the first time Tim has ever been to another country
C) Perth is in the centre of Australia
d) Tim's brother has never been abroad before.
a) Tim has been in Darwin for six months
b) It's the first time Tim has ever been to another country
C) Perth is in the centre of Australia
d) Tim's brother has never been abroad before.
问题解答：
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