2．On a south-facing slope （斜坡） in northern Canada，snow rolls down from an underground disturbance.When the surface finally erupts，the head of a female polar bear comes out.Four months earlier，the bear had given birth to twins.They stayed close to her for warmth and food.
Barle 's life could have begun this way.It's thought that she was born and raised on the west bank of Hudson Bay in 1984.Records suggest she may have been sent to Germany in 1986 through the Manitoba Polar Bear Export Program.The program was devoted to relocating orphaned（成為孤兒的）baby bears abroad and guaranteeing them a better life.In Germany，Barle ended up with animal trainer Fredy Gafner for unknown reasons.Shortly after 1990，Gafner took his bear show to the Mexican Suarez Brothers Circus.
For 13 years，Barle and six other polar bears were forced to perform.Barle was denied not only the ability to run，swim，and climb but also the chance to find a mate and raise young.When not performing，Barle and the other bears were kept in a truck divided into seven 64- square-foot metal cages.
Barle would likely never have been rescued had it not been for Ken and Sherri Gigliotti.In 1996，the Canadian couple took a trip to Cozumel，Mexico，where they visited the Suarez Brothers Circus.They were shocked by the polar bears' conditions，so they brought home a circus program and shared it with the Winnipeg Free Press.
Soon after the Free Press story appeared，Debbie Leahy，then director of Captive Animal Rescue，began investigating the Suarez Brothers Circus.She watched the bears perform several times，and once she received a behind-the scenes tour.During each visit，the bears were dirty.Flies were everywhere.
Leahy devoted herself to the bears' rescue.Later，the Manitoba government passed the Polar Bear Protection Act，which stated that only orphaned baby bears under two years of age were eligible （有資格的） for zoo placement and zoos must satisfy strict standards.
Due to mounting pressure from interest groups，the Suarez Brothers Circus chose to abandon its seven polar bears in Puerto Rico.
（1）Why was Barle sent to Germany？
A．To be trained to perform.
B．To be better taken care of.
C．To join the Suarez Brothers Circus.
D．To meet other orphaned baby bears.
（2）What was Barle ' s life like while working with the Suarez Brothers Circus？
A．She didn't get on well with other bears.
B．She was separated from her babies.
C．She had to perform in a metal cage.
D．She couldn't develop normally.
（3）How did the Canadian couple rescue Barle？
A．They set up a circus program in Mexico.
B．They used the media to put the circus under pressure.
C．They persuaded the Manitoba government to renew a law.
D．They employed Debbie Leahy to carry out an investigation.
（4）What does the author intend to do by writing the passage？
A．To call on readers to protect polar bears.
B．To show the miserable life of circus animals.
C．To describe the new life of Barle the polar bear.
D．To introduce the dramatic rescue of Barle the polar bear.
