The recent leap year, where February has/had 29 days, is/was:__________?
Correct answer: D. 2020Science
- A. 2017
- B. 2018
- C. 2019
- D. 2020Science
Explanation
2020 was a leap year, so February had 29 days; leap years generally occur every four years, with century-year exceptions.
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Inventions and Discoveries covers the people, dates, principles and practical uses behind developments such as the wheel, printing press, telephone, electricity, radio, computer, internet, vaccines and space technology. It distinguishes an invention, which creates a device or process, from a discovery, which identifies something already present in nature.
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