问题
填空题
70700700：最高位是______位，这一位上的7表示______；中间的7在______位上；最后的7表示______．
答案
70700700最高位是千万位，这一位上的7表示7个千万；中间的7在十万位上；最后的7表示7个百；
故答案为：千万，7个千万；十万，7个百．
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70700700：最高位是______位，这一位上的7表示______；中间的7在______位上；最后的7表示______．
70700700最高位是千万位，这一位上的7表示7个千万；中间的7在十万位上；最后的7表示7个百；
故答案为：千万，7个千万；十万，7个百．
When you speak, write a letter or make a telephone call, your words carry a message. People communicate (交流) with words. Do you think you can communicate without words? A smile on your face shows you are __1__ . Tears in your eyes tell others you are sad. When you __2__ your hands in class, the teacher knows you want to __3__ something or ask questions. You __4__ your head from side to side, and people know you are saying no. Other things can also carry messages. For example, a sign at the __5__ helps you know which bus you can take here. A sign on the wall of your school helps you __6__ the library. Signs on the doors tell you __7__ to go in or out. Have you ever noticed that there are lots of signs round you and that you receive messages __8__ them all the time? Books, newspapers, TV, radios and __9__ all help us to communicate with other people. They all help us __10__ what is going on in the world and what other people are thinking about.
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