Sometimes your biggest weakness can become your biggest strength. Take, for example, the story of one 10-year-old boy who decided to study judo despite the fact that he had lost his left arm in a devastating car accident.
The boy began lessons with an old Japanese judo master. The boy was doing well, so he couldn't understand why, after three months of training, the master had taught him only one move.“Sensei,” the boy finally said, “shouldn't I be learning more moves?”“This is the only move you know, but this is the only move you'll ever need to know,” the sensei replied.
Not quite understanding, but believing in his teacher, the boy kept training.
Several months later, the sensei took the boy to his first tournament. Surprising himself, the boy easily won his first two matches. The third match proved to be more difficult, but after some time, his opponent became impatient and charged; the boy skillfully used his one move to win the match. Still amazed by his success, the boy was now in the finals. This time, his opponent was bigger, stronger, and more experienced. For a while, the boy appeared to be overmatched. Concerned that the boy might get hurt, the referee called a time-out. He was about to stop the match when the sensei intervened.
“No,” the sensei insisted, “Let him continue.” Soon after the match resumed, his opponent made a critical mistake: he dropped his guard. Instantly, the boy used his move to pin him. The boy had won the match and the tournament. He was the champion.
On the way home, the boy and sensei reviewed every move in each and every match. Then the boy summoned the courage to ask what was really on his mind. “Sensei, how did I win the tournament with only one move?” “You won for two reasons,” the sensei answered. “First, you've almost mastered one of the most difficult throws in all of judo. Second, the only known defense for that move is for your opponent to grab your left arm.”
The boy's biggest weakness had become his biggest strength.
we can infer from Paragraph 2 that the teacher__________.

A．was unwilling to teach the boy

B．regarded mastering one move as extremely important.

C．worried about the boys ability

D．trained the boy to win judo tournaments

After the boy came in the finals, __________.

A．he feared to get hurt.

B．the teacher felt satisfied

C．he thought of giving up.

D．the judge stopped the game.

The underlined expression “be overmatched” in Paragraph 3 is closed in meaning to__________.

A．lose heart

B．lose patience

C．be defeated

D．be monitored

How did the boy’s teacher explain his success of the tournament?

A．His opponent was too confident and careless.

B．The boy was experienced in playing the games.

C．His opponent didn't notice the boys left hand.

D．The boy made use of his judo skill and weakness.

What is the purpose of the passage?

A．To suggest we turn weakness into strength.

B．To encourage us to insist in a match.

C．To show us how to win a match luckily.

D．To tell us to choose an experienced teacher.