1 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

A holiday linked to a maths concept may not seem that     1    (excite), especially for those who are not fond     2    the subject. However, America’s Pi (“π”) Day ------ observed     3    (annual) on March 14 to honour the ratio of the circumference of a circle to its diameter, widely recognized as 3.14 ------ is an exception. That is because the    4     (celebrate) don’t just include fun math activities, but also a slice, or two, of delicious pies!

The tradition     5    (begin) at a museum called the Exploratorium in San Francisco. On March14,1988, at 1:59 pm, the museum’s then-technical curator, Larry Shaw, convinced colleagues to celebrate the day,     6    also happens to be Albert Einstein’s birthday, by parading around one of the museum’s circular spaces and consuming fruit pies. The group had     7     a good time that museum officials decided to make Pi Day    8    annual event where visitors are treated to special pi-related activities. Schools, libraries and universities around the country soon began organizing similar activities and in 2009, US lawmakers made the celebration official.

Today, Pi Day is celebrated in many creative ways.    9    (encourage) more girls to seek out careers in science, technology, engineering, and mathematics, female television meteorologist wear     10    is referred to as “ the dress” on March 14 every year.

2 . Columbus Day has been on American calendars since 1937, when President Franklin D. Roosevelt declared October 12 a federal holiday to honor the Italian explorer who “discovered” the Americas in 1492. However, the holiday has always been controversial. Many people believe that Christopher Columbus should not be given credit for “discovering” the continent, since native Americans had already been living there for generations.

Besides, the explorer’s mission was not a scientific “voyage of discovery”, but one intended to conquer the new land. Critics maintain that the Spanish army Columbus brought on his second voyage, caused the deaths of hundreds of thousands of indigenous(土著的) people. Those that survived the massacre became slaves, working in mines. Many, therefore, believe that the explorer’s arrival should not be celebrated.

In 1977, a delegation of Native nations at the International Conference on Discrimination Against Indigenous Populations in the Americas, proposed renaming the holiday to “Indigenous People’s Day”. The proposal passed with a majority.

However, convincing the rest of the country to do the same was not that easy. It took 15 years before the city of Berkeley in California adopted the name in 1992 and then 22 more years before Minneapolis, MN and Seattle, WA did the same in 2014. The following year, eight more cities including Albuquerque, NM and Portland, OR, began celebrating the second Monday of October as “Indigenous People’s Day”. The movement really started to gain momentum in 2016 when 19 cities, including Boulder, CO and Phoenix, AZ, as well as the states of Minnesota and Vermont, all decided to rename the day to honor Native Americans. In 2017, 21 more cities, including Austin, TX and Los Angeles, CA have made the shift.

With the increasingly larger number of cities moving away from Columbus Day each year, it will be interesting to see if “Indigenous People’s Day” gets federal recognition. Meanwhile, it will continue to be the focal point of debates throughout the Americas.

1. Which of the following is the best title of the passage?

A．Indigenous People’s Day Has Got Federal Recognition after Years’ Work

B．Columbus Day Honoring the Italian Explorer Has Always Been Controversial

C．Christopher Columbus Should Not Be Given Credit for Discovering Americas

D．More Cities Have Replaced Columbus Day with Indigenous People’s Day

2. Many people don’t agree that     .

A．Columbus discovered the continent

B．Columbus was a remarkable explorer

C．Native Americans were abused

D．Columbus Day is a public holiday

3. What can we infer from the second paragraph?

A．Columbus was well received by indigenous people

B．The indigenous people hated the Columbus’ arrival

C．The Spanish army rebelled against Columbus’ rule

D．Few soldiers survived the attack by native Americans

4. Which of the following cities is the earliest to replace Columbus Day with Indigenous People’s Day?

A．Portland	B．Phoenix
C．Seattle	D．Los Angeles