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Long, long ago there was a poor scholar who wrote the 1 'fu' or 'happiness' on paper and his wife tore the character out. This is the2 of papercutting (jian zhi).The jian zhi craft is considered to be one of the standards to identify a smart woman. People think a woman who is good at making 3 jian zhi is smart.Jian zhi patterns come from daily life. 4 and5 are two skills used to make jian zhi.Intricate centres are important for jian zhi designs. Jian zhi is a popular 6 art. Jian zhi expresses Chinese people's wishes for happiness and good luck.

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Legends say that the1 for kites was a wooden bird flying all day. Most likely, people were inspired by a hat blown off by the wind and invented feng zheng.Legends also say that a general bound bamboo whistles on a huge feng zheng made of ox hide.The kite made horrible sounds to 2 off enemies. Other versions say he wrote important messages on feng zheng and sent them to his troops. The military use of kites was just folklore.After all, feng zheng are toys. Classic kites use bamboo, rattan or some other strong, but flexible, wood for the 3 ; paper or light fabrics such as silk for the 4; and are flown on 5 or twine.People often make exquisite decorations on feng zheng. Feng zheng have become real works of art - they seem like beautiful paintings flying in the blue sky.

在插入和选择排序中，若初始数据基本正序，则选用；若初始数据基本逆序，则选用。

在堆排序和快速排序中，若初始记录接近正序或逆序，则选用; 若初始记录基本无序，则最好选用。

每次从无序表中顺序取出一个元素，把这个元素插入到有序表中的适当位置，此种排序方法叫作排序；每次从无序表中挑选出一个最小或最大元素，把它交换到有序表的一端，此种排序方法叫作排序。