题型：语法填空（语篇） 题类：常考题 难易度：困难
山东省济南市2021届高三上学期英语期中试卷（含听力音频）
Have you ever wondered you would do to solve math problems if you didn't have a calculator or computer or even pencil and paper? People in China have used an ancient counting tool (perform) mathematical operations. The Chinese calculator's name is "suanpan", but it is known "abacus" in English. Invented by Liu Hong, abacus is one of the symbols of Chinese people's wisdom (date) back to the 12th century.
Abacus has had a far-reaching influence on science and technology, language, literature, art, architecture and many fields of China and even some areas of the world. Meanwhile, abacus has affected people's character, such as honesty and diligence. For centuries, this simple counting device (设备) (pass) down through different dynasties with its original design and purpose (actual) unchanged.
The calculations can be made on it immediately, with the device storing the results in “visual storage” much like a computer display. When working with an amount of (number), an abacus is practically faster, since it has a (good) "keyboard" than the Western calculators. Anyway, the small abacus has made an outstanding contribution in the fields of human intellectual development, just as the computer does in today's (social).
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