请在下列选项中选出正确的序数词来表示句中的划线部分1.国庆节在每年十月一日。
A. October first
B. October number one
C. the first October
D. the one October
我的哥哥想在30号去北京。
A. on number thirty
B. on number thirteen
C. on thirtieth
D. on thirteenth
我的老师住在二十三楼。
A. on the twenty- third floor
B. on the twenty three floor
C. on the floor twenty- third
D. on the floor twenty three
我们今天学习了第五课。
A. Lesson Five
B. the five lesson
C. the lesson fifth
D. five lesson
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