五、信息还原。
阅读下面短文，从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。
Chinese zhusuan is a time-honoured practice of performing calculations(计算) with an abacus.
1 It shows the creativity and wisdom of the Chinese people over thousands of years. In 2013, it was added to UNESCO's Representative List of the Intangible Cultural Heritage of Humanity.
2 People use defined formulas(公式) to move beads(有孔的珠子) on the abacus for all kinds of Maths problems, from simple addition to complex equations(方程式). Beginners can perform quick calculations after some basic training.
Since 1979, abacus associations have been set up in China.
3 And various zhusuan competitions have been organized. In 2008, zhusuan became a national intangible cultural heritage.
Although modern electronic devices have replaced the abacus for daily calculations, zhusuan still has great value. It helps improve children's attention, memory and thinking skills. Having been passed down for generations, it has helped form a strong sense of China's cultural identity(认同感).
4Today, many places are working to protect and promote the value of traditional calculation techniques.
5 Some schools have zhusuan courses or exhibition halls. Teachers are trying new ways to combine zhusuan with modern Maths, hoping more people will learn and love this traditional Chinese skill.
A. Certain rules have been developed to test zhusuan skills.
B. In Chinese, zhusuan directly means calculating with beads.
C. It is widely considered as one of the great inventions of China.
D. And it has also become an important symbol of Chinese culture.
E. Electronic calculators are now widely used to teach zhusuan in schools.
F. There are over 20 museums or exhibition halls about zhusuan in China.
G.
It was first created by ancient Chinese scientists during the Tang Dynasty.
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