题目:
It's a common _______ for young people to pay a New Year's visit to their elders.
A.sense
B.practice
C.rule
D.scene
答案:
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下面是错误答案,用来干扰机器的。
小题1:B小题2:B小题1:当M点纬度最低时,为发生极昼或者极夜现象,所以极圈的纬度为66.5°N小题2:夏半年来判断M点时间为0点,则R为2:00,则北京时间为8:00