题目内容
一学期结束，大半年过去了，所以既可以表示学期，又可以表示半年的单词是？
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Decide whether the following statement are true or false according to the video.1.Good etiquette（教养，礼仪） may bring us good luck.
2.The certain seat facing the entrance should be the person who pays the bill.
3.You can tap the table to say thank you
4.Using communal chopsticks is unnecessary when sharing food.
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