中考真题2024年山东省威海市阅读理解A篇-神奇的π与圆周率日
Pi is a special number that goes on forever. The symbol for this special number is a Greek letter “π”. To keep the math simple, we say π is 3.14. Pi is used to find the size of circles. Pi is always the same no matter how small or big the circle is.
Because it is so special, someone thought of celebrating it. Since pi is 3.14, a physicist named Larry Shaw decided March 14th would be the perfect day. So on this day in 1988, he invited his friends to walk around in a circle and eat pies. Later, more math and science lovers celebrated Pi Day on March 14th each year. On November 26th, 2019, Pi Day was recognized (正式认定) as the International Day of Mathematics.
Pi Day is celebrated in different ways. There are games in which people try to memorize as many decimal places (小数点后位数) as they can. There are pie-eating contests. Then, at 3:14 p. m., there are special events. For example, people get free pies at some parties.
Today, Pi is not just a number.
1.1. What is pi in this passage?
A A circle.
B A pie.
C A number.
D
解析：选C。细节理解题。根据“Pi is a special number”可知pi是一个特别的数字。故选C。
2.2. What is pi used for?
A Keeping the circles small.
B Finding the size of circles.
C Helping memorize the number.
D
解析：选B。细节理解题。根据“we say π is 3.14. Pi is used to find the size of circles”可知pi被用来计算圆的大小。故选B。
3.3. When was Pi first celebrated?
A On March 14th, 1988.
B On March 14th, 2019.
C On November 26th, 2019.
D
解析：选A。细节理解题。根据“a physicist named Larry Shaw decided March 14th would be the perfect day. So on this day in 1988, he invited his friends to walk around in a circle and eat pies”可知在1988年3月14日第一次庆祝圆周率。故选A。
4.4. What’s the main idea of Paragraph 3?
A How people memorize pi.
B How people get free pies.
C How people celebrate Pi Day.
D
解析：选C。主旨大意题。根据“Pi Day is celebrated in different ways”可知本段主要介绍了圆周率日的庆祝活动。故选C。
5.5. What does the passage mainly talk about?
A A special festival.
B A math symbol.
C Pi and Pi Day.
D
解析：选C。主旨大意题。本文主要介绍了圆周率和圆周率日。故选C。