问题
选择题
It’s said that corn was grown a lot in Tibet _______.
A．in 17th century
B．in the 17th century
C．in 17 century
D．in the 17 century
答案
答案：B
固定表达，B符合。
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It’s said that corn was grown a lot in Tibet _______.
A．in 17th century
B．in the 17th century
C．in 17 century
D．in the 17 century
答案：B
固定表达，B符合。