To personal trainer Sammy Callari，13-year-old Parker Seward is more than a client（客戶）.He's his "little brother".Over the past year，the pair have bonded.They play basketball together，share meals and dance to hip-hop like no one's watching.
   The trainer was asked to work with the 13-year-old boy，who has Down syndrome（唐氏癥），because his coworker who dealt with the boy was out of town last spring.Callari had never worked with someone with a disability before.He was anxious the first day he met Parker.But Parker's big smile and cheery introduction immediately put him at ease.He reminded Callari of himself when he was a teenager.Like Parker，Callari has also faced his fair share of challenges over the years.
   As a high schooler，Callari described himself as being the weak kid.When it came to sports，he was always overlooked.His dream of playing baseball in college quickly faded away.When he went to college，Callari turned to a new sport.His younger brother trained him to become a boxer.Callari participated in five matches.Out of four of those fights he was the underdog，and he won three times. "I know how it feels，" Callari said. "Society tells you that you can't do this，you can't do that." When it comes to Parker，Callari refuses to accept the word "can't".
   The friends meet twice a week to train.They bike，box，run and work on their core with push-ups.Parker has a short attention span，so it's Callari's job to keep him focused. "If Parker can do it，if he's having fun，even with his frustration，then people will ask，"Why can't I do that？" Callari said. "That's the whole task right now."
   Callari recalls Parker's mom once thanking him for taking a "chance" on her son.Callari told her he never viewed it that way.Parker may be the student，but Callari says he's also the one who's learning.

（1）Why was Callari asked to train Parker？

C

C

A．They shared the same interests.
B．Parker's parents had faith in Callari.
C．Callari took place of his absent colleague.
D．Callari was an expert in Down syndrome.
（2）What can we learn about Callari when he was in high school？

B

B

A．He was good at sports.
B．He was out of condition.
C．He was looked down upon by everyone.
D．He was influenced deeply by his brother.
（3）What attitude does Callari have to Parker？

A

A

A．Grateful.
B．Sympathetic.
C．Cautious.
D．Critical.
（4）What is the text mainly about？

C

C

A．An inspiring story of a disabled boy.
B．high schooler suffering lots of failure.
C．The friendship between a disabled boy and his personal trainer.
D．Ways of developing friendship with the boy with Down syndrome.