阅读理解。
Halloween
History experts say Halloween goes back more than two thousand years to the Celts (凯尔特人) of ancient
Britain. October 31 was the Celtic Day of the autumn feast (宗教节日). On that day, priests (牧师) of the Celtic
religion (宗教) prayed that the spirits of the dead would retum to their homes for a few hours. The Celts built
huge fires to frighten away evil spirits released with the dead on that night.
Hundreds of years later, the Roman Catholic (天主教的) Church made November first a day to honor
Christian Saints. It was called All Saints Day or All Hallows Day. The day before was called Hallow Eve or
Halloween. The name came from the church. But the traditions were closer to the old Celtic beliefs.
People from Scotland and Ireland brought these traditions to America. Many people still believed spirits
played tricks on people on the last night of October.
In the late 19th century, American boys helped the spirits with tricks of their own. On Halloween, they
would do things like changing street signs or putting a wagon on top of a house.
American children continue to celebrate Halloween today. Many adults enjoy the holiday as well. They go
to holiday parties dressed as ghosts, monsters or famous people from history.
Children continue these Halloween traditions by going out to "Trick or Treat". They dress as frightening
creatures or characters from popular movies. They go from house to house asking for candy. They may also
ask for money for the United Nations International Children's Emergency Fund (联合国国际儿童急救基金会).
They send the money to UNICEF to help needy children around the world.
1. Who believed that the dead spirits would return home on Halloween?
A. The Celts.
B. American boys.
C. People from Italy.
D. People from Rome.
2. Who gave the name of Halloween?
A. The Celts.
B. American boys.
C. People from Scotland.
D. Roman Catholic Church.
3. "Trick or Treat" means _____.
A. give us bananas or we'll not leave
B. give us candy or we'll make trouble
C. give us apples or we'll go into your kitchen
D. give us oranges or we'll cry here
4. On Halloween children go from house to house asking money _____.
A. to buy their candy
B. to buy their pens
C. to send to their parents
D. to help the poor children in the world
可知线速度随物体所在纬度的增加而减小，选项B 正确，C 错误；因为同一纬度上物体的转动半径不同，所以根据
可知物体的向心加速度不同，选项D 错误；