Question

    Circles can be found everywhere in the natural world, but with no exact way to measure(测量) them they are very mysterious and might never be completely understood. When you take the distance around a circle and divide it by the distance across a circle, you will always get Pi. While Pi is about 3.14 when rounded, it is endlessly long. With the help of computers, mathematicians(数学家) have been able to work Pi out to over a trillion decimal places(小数点后万亿位). This makes Pi mysterious, even to the most famous mathematicians.

Pi Day is celebrated on March 14, since the way we write this date, 3/14, looks just like Pi when rounded. In 2009, U. S. Congress voted to formally make March 14 Pi Day. Certain parts of the world—places where March 14 is written as 14/3—will instead celebrate Pi Approximation Day which takes place on July 22nd because of the division(除法) result of 22/7.

Pi has appeared in movies, comics, music, and more. “In modern movies, any time the filmmaker wants to create a sense of mystery, the symbol Pi is used,” says Blatner. People also love working to remember the digits(数位) of Pi and competing against others to see who can remember most. The Guinness World Record for remembering the most digits of Pi is held by Lu Chao of China, who successfully remembered Pi to nearly 67,000 decimal places.

Above all, Pi Day is about having fun with the number, according to Blatner. People will celebrate Pi Day by eating pie and throwing pie, and with fun Pi-related games. Princeton, New Jersey holds a series of Pi-related festivities. Events this year include a surprise birthday party for Albert Einstein whose birthday also falls on March 14, and a “Walk a Pi Event” where participants will walk 3.14 miles together. Just like the number itself, the possibilities for Pi Day are truly endless.

1.What makes Pi mysterious?

A. Ways to divide a circle B. Ways to use it when rounded

C. Being unable to write it as an expression D. Its endless decimal places

2.Why is Pi Day celebrated in some places on July 22nd?

A. Because it is announce formally B. Because it was corrected originally

C. Because the division result is similar to Pi D. Because that day is easier to remember

3.What is the goal of using Pi in films according to Blatner?

A. To move more viewers B. To call for viewers’ attention

C. To make the films more frightening D. To add something mysterious to the film

4.What can we learn from the text?

A. Lu Chao is the first Chinese to recite Pi

B. Many states in the USA celebrate Pi day on July 22nd

C. There are many different events to celebrate Pi Day in the world

D. Scientists will try their best to work out the digits of Pi thoroughly

Answer

1.D

2.C

3.D

4.C

【解析】

本文主要讲述了自然界中到处都可以找到圆圈测量非常神秘，后来在计算机的帮助下，数学家发现了圆周率，并已经能够将Pi工作到超过一万亿的小数位（小数点后万亿位）。这使得Pi神秘，别使用在包括电影等多方面，以增加乐趣和神秘感，现在新泽西州普林斯顿举办了一系列与Pi相关的庆祝活动。就像数字本身一样，Pi Day的可能性真的是无穷无尽的。

1.细节理解题。题干句意：What makes Pi mysterious?是什么让圆周率如此神秘?选项A. Ways to divide a circle如何划分一个圆。 B. Ways to use it when rounded四舍五入时的使用方法。C. Being unable to write it as an expression不能把它写成表达式。D. Its endless decimal places无穷小数。结合原文信息，依据文中：With the help of computers, mathematicians(数学家) have been able to work Pi out to over a trillion decimal places(小数点后万亿位).在电脑的帮助下,数学家(数学家)已经能够解决π小数点后超过一万亿(小数点后万亿位)。This makes Pi mysterious, even to the most famous mathematicians.这使得圆周率变得神秘，即使对最著名的数学家来说也是如此。正确答案为：D

2.细节理解题。题干句意：Why is Pi Day celebrated in some places on July 22nd?为什么有些地方在7月22日庆祝圆周率日?选项A. Because it is announce formally因为它是正式宣布的。B. Because it was corrected originally因为它本来是纠正过来的。C. Because the division result is similar to Pi因为除法的结果类似于Pi。D. Because that day is easier to remember因为那一天更容易记住。结合原文信息，依据文中：Certain parts of the world—places where March 14 is written as 14/3—will instead celebrate Pi Approximation Day which takes place on July 22nd because of the division(除法) result of 22/7.世界的某些地区,3月14日写成14/3，而不是庆祝π近似的一天发生在7月22日,因为部门(除法)的22/7。正确答案为：C

3.细节理解题。题干句意：What is the goal of using Pi in films according to Blatner?布拉特纳认为在电影中使用圆周率的目的是什么?选项A. To move more viewers吸引更多的观众。B. To call for viewers’ attention吸引观众的注意力。C. To make the films more frightening让电影更恐怖。D. To add something mysterious to the film给电影增加一些神秘的东西。结合原文信息，依据文中：any time the filmmaker wants to create a sense of mystery, the symbol Pi is used,” says Blatner.只要导演想要创造一种神秘感，就会使用圆周率这个符号，”布拉特纳说。People also love working to remember the digits(数位) of Pi and competing against others to see who can remember most.人们也喜欢努力记住数字(数位)π和与他人竞争,看谁最能记住。正确答案为：D

4.细节理解题。题干句意：What can we learn from the text?我们能从课文中学到什么?选项A. Lu Chao is the first Chinese to recite Pi鲁超是第一个背诵圆周率的中国人。B. Many states in the USA celebrate Pi day on July 22nd美国许多州在7月22日庆祝圆周率日。C. There are many different events to celebrate Pi Day in the world世界上有许多不同的活动来庆祝圆周率日。D. Scientists will try their best to work out the digits of Pi thoroughly科学家们将尽最大努力彻底算出圆周率的数字。结合原文信息，依据文中：People will celebrate Pi Day by eating pie and throwing pie, and with fun Pi-related games.人们会通过吃派和扔派，以及与派有关的有趣游戏来庆祝圆周率日。正确答案为：C