题目

硅被誉为无机非金属材料的主角,下列物品用到硅单质的是（     ）   A．光导纤维       B．计算机芯片    C．水晶镜片        D．石英钟表 答案：B 解析: 略根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。When a New Yorker was hiking in Europe, his Swiss friend kept saying “Listen to that!” but he didn’t hear anything. His ears were accustomed to loud city noises and it was days before he was able to notice the sound of a bird. 1. . There is background music in restaurants, bars, stores, rest rooms, elevators, and when you are waiting on the telephone. Russell Baker blames “society’s determination to entertain you whether you like it or not”. 2. , but in practice they avoid it. They drive with the car radio turned up, switch on the television when they get home, and exercise while listening to music on headphones. 3. They can buy things in stores, but they do not have enough human contact. So they fill their lives with sound. 4. . Young men play their car stereos loudly in order to create a personal environment around them. Like animals, they are marking a territory to warn rivals away and to attract a mate.It may also be true that the brain itself wants excitement just as the stomach insists on food. 5. . This seems extreme. Perhaps we would be better off if we sought periods of silence to provide balance.A. Sometimes the reason for the noise is primitiveB. The noise suggests that people have a spiritual problemC. They spend too much time in elevators and the likeD. Unlike in the past, we now have modern technology to supply a constant flood of soundsE. For most of us, silence has become a rare experienceF. A good response would be to use our brains to improve modern technologyG. People may say they yearn for quiet