题目内容：
根据以下材料，回答题Passage Two
A 10-year-old boy 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 did well, but he couldn't understand why, after three months of training the master had taught him only one move.
“Master, ”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 master replied.Not quite understanding, but believing his teacher, the boy keeps training.Several months later the master 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 be-cameim patient and charged；the boy deftly 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 over matched. Concerned about the boy, the referee called a time-out. He was about to stop the match when the master came forward.
“No, ”the master insisted, ”Let him continue.”
Soon after the match resumed, his opponent made a fatal mistake: he dropped his guard. Instantly, the boy used his move to pin him. The boy won the match. He was the champion.On the way home, the boy and his master reviewed every move in each and every match. Then the boy summoned the courage to ask what was really on his mind.
“Master, how did I win the tournament with only one move?”
“You won for two reasons, ”the master answered.”First, you've almost mastered one of the most difficult throws in all judo. And second, the only known defense for that move is for your opponent to grab your left arm.”
( ) Judging from the context, what happens when a referee calls a”time-out”(Para.7)? A．The time for the game has run out.
B．The game stops for a short time.
C．Either side can claim victory.
D．The game ends in a tie.
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