A. To explain why people have wrong ideas. B. To list the advantages of early number systems. C. To show that all number systems are not positional. D. To indicate why zero was a relatively late introduction. 相关知识点: 试题来源: 解析 C 反馈...
Roman numerals are so ubiquitous in our world that we often don't notice them. Which is not a bad thing if we can't read them. George Hodan/Public Domain Pictures(CC0 1.0) Ever seen a XVI or XCV label on something and been totally confused? You're probably not alone, as the Roma...
Why are all salts compounds? Biology has been classified as a science. Briefly explain why it has been rated so and justify by giving more examples. Why is the S-T segment an important criterion in assessing the condition of the heart? What is a random match probability and why is it us...
In compounds the word stress usually occurs on the first element whereas in noun phrases the second element is generally stressed if there is only one stess.2) Semantic features. Compounds are different from free phrases in semantic unity. Every compound 42、should express a single idea just ...