阅读下列材料：

“一国两制”的构想从实际出发，兼顾了各方面的实际利益，因而是各方可以接受的、合情合理的、切实可行的方案。这一构想，既体现了实现祖国统一、维护国家主权的原则，又充分考虑到台湾、香港、澳门的历史和现实，具有高度的灵活性，是推进祖国和平统一大业的基本方针。

                                                                                                                                                                      ──杨先材《中华人民共和国史》

结合所学知识回答：

阅读理解

    A farmer grew some vegetables in his garden. One day his wife was ill and he had no money. He had to sell some cabbages and carrots in the market. The next morning he took two baskets of vegetables to town, but it was raining hard that afternoon and there were few people in the street. When his vegetables were sold out, it was dark. He bought some medicine and hurried to his village.

    On his way home he saw a person lying on the ground. He placed his baskets on the ground and was going to help the person to get up. At that time he found it was a dead man and there was much blood on his body. He was so afraid that he ran away quickly, without taking his baskets.

    The next afternoon the farmer was sent to the police station. Having shown the baskets, an officer asked, “Are these yours? ” “Yes, sir. ” The farmer answered timidly（胆怯地）. “Have you killed the man?” “No, no, sir.” The farmer said in a hurry. “When did you see the dead man?” “About seven last evening. ” “Did you see who killed the man?” “No, sir. ” The officer brought out a knife and asked, “Have you seen it yet?” “No, sir. ” The officer became angry and told the policemen to beat him up and sent him into prison.

    That evening the officer went on trying. Pointing to the knife, he asked again, “Have you seen it yet?” “ yes, sir.” The officer was happy and asked, “When and where?” “I saw it here this afternoon, sir.”

将下列单词或词组填入空格，每空格限填一词，每个单词或词组只能填一次。

    Although we still don't know whether using mobile phones can cause cancer, we should try to use our phones ____.Here are some tips:

    *Use a headset（耳机） or speaker.

    Headsets give out much less radiation than phones.Some wireless headsets give out low-level radiation. However, you should ____ your headset when you're not talking to anyone.Using a phone with a speaker will also make it safer.

    *Listen more, talk less. Your phone gives out radiation when you talk or text, but not when you're listening or getting messages.

    *Hold the phone away from your body when you are talking, not ____ your ear. Also, don't keep it in your pocket.

    *Choosing texting over talking. Phones give out less radiation when sending texts than when making calls.Texting also keeps radiation away from your head.

    * Poor signal? Stay off the phone. Fewer signal bars（信号数） on your phone ____ that the phone needs to give out more radiation to work. Make and take calls when your phone has a strong signal.