阅读下面短文，在短文的空格内填入适当的词，使其内容通顺。（每空格限填一词）

 Indians always shake their heads when they talk to others. It does not have the same meaning as our “ ____   “. If someone wants to visit  India, he should know this or it will give him some   ____  .

 One day, a foreign officer went to India on business. He hired （雇用）a car and an Indian driver. When he told his driver to take him to his office, the driver shook his head at once. The officer ____  his order and the driver shook his head again. At last, the officer, of course, got  ____ 。

“How dare（敢）you refuse my order?” he  ____   , “Drive me to the office at once!”

 The driver answered in a very loud voice too. “Yes, sir.” But to the officer's surprise, the driver shook his head at the same time.

 The car started and the officer was now so surprised that he ____   say a word. He thought about it for a while and nodded with a smile, " 'No' means 'Yes' here!”

阅读短文，回答问题。

       ①大熊猫性情孤僻，平时独来独往，只有在发情期，雌雄才暂时同居。它们的繁殖力很低，一般每胎产一仔，有时可产两仔。分娩期间多以枯树洞为巢穴。奇怪的是，一只体重100公斤以上的成年大熊猫，刚生下来的仔熊猫却小得出奇，体重只有0．1～0．5公斤。像只小老鼠，仅相当于母体重量的千分之一，因此不易成活。大熊猫从出生到长大为成体约需两年左右时间。

       ②正因为大熊猫繁殖艰难，存活又难，所以如今我国野生的大熊猫屈指可数，估计只有1000只左右。

       ③在人工饲养条件下，大熊猫产仔成了大喜事。1982年9月，西班牙国王睡得正香，忽地电话铃声大作。国王知道，如果不是发生紧急大事，部下不会半夜打扰他。一听电话，国王乐不可支，因为首都马德里动物园里报告，那里的中国大熊猫“绍绍”刚刚分娩，生下双胞胎！国王兴高采烈地说：“向你们表示热烈的祝贺！”刚说完，又连忙补充一句：“一定要好好照料小宝贝！”翌日，来自西班牙的喜讯，传遍了全世界。如今，中国的大熊猫专家们逐渐掌握了大熊猫生殖规律，已经有上百只仔熊猫在繁殖中心诞生。

    The first teacher-parent meeting would be held in the school. To the little boy's disappointment(失望), his mother said she would go. He felt sorry for her face. She was very beautiful, but there was a big scar (疤痕) on her right face. The boy never talked about it with his mother.
At the meeting, the people noticed the mother’s kindness and beauty though she had the scar. But the little boy hid himself. After the meeting, the teacher asked his mother carefully. "How did you get the scat on your face?" The mother answered. "When my son was a baby, he was once in a room that caught fire. Everyone was too afraid to go in because the fire was out of control. At that time, I rushed in As I was running towards his bed. I saw a piece of wood coming towards his bed. I threw myself over him to protect him. I was knocked down. Luckily, a fireman came in and saved both of us. But I got the scar." She touched her face." This scar will be here for ever, but I have never felt sorry for what I did."
    At that moment, the little boy came out with his eyes wet. He held his mother’s hand for the rest of the day.

腺苷和腺嘌呤的区别是____ ．