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单模光纤采用发光二极管作为光源。
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无线网络的干线部分基本上都是有线的。
Quiz 1 (选词填空) (填单词对应字母)A. stretched out B. mereC. ashamed ofD. recurringE. sweatingF. motionG. emotions H. anxietyI. On one occasionJ. startled1. He was _______________ by the sound of the back door opening in the dead of night.2. There is nothing serious about the damage; it is a ____________ scratch (划痕) on the door of the car.3. Mom was singing a lullaby to my baby sister while rocking the cradle with a gentle backwards and forwards ________________.4. Tense and hot, we were really ________________ as we waited for them to announce the results.5. He sat leaning against the back of the seat with his legs _____________ straight in front of him.6. Mike is an extremely careless man. ________________________, it was not until he got to an ATM that it occurred to him he had left his card at home.7. Young children often feel a lot of _______________ about their first day at school.8. Stan tends to be driven by his ________________ -- he rarely considers the consequences of his actions.9. She ought to be thoroughly ___________________ herself for talking to her guests in such a rude way.10. He had tried to put the unpleasant scene out of his mind, but it kept on _______________ to him, especially in dreams.
Quiz 2 Confusable words (近义词辨析)(选词填空，每空只填一个单词，注意单词形式)Group Onefantasy, fancy, imagination1. These plans reveal a complete failure of _______.这些计划显得毫无想象力。2. Her mind went where _____ took it.他总是不着边际地胡思乱想。3. An amusement park full of figures from fairy tales may be called a ____ land.一个游乐园，如果充满了神话故事中的人物塑雕，则堪称虚幻境界。Group Twoemotions, feeling, sensitivity4. Her ____ was that right would win. 她感觉公理会取得胜利。5. The dentist gave me an injection which reduced the _____ of the nerve.牙医给我注射一针以减轻神经的敏感性。6. He had lost all of ______ in the left leg. 他的左腿完全失去了知觉。7. The speaker appealed to our _______ rather than to our minds.演讲者激发了我们的情感而不是启发我们的思考。Group Threestartled, frighten, terrifying8. Not wanting to _____ the poor man, Mrs. Richards quickly hid in the small store-room underthe stairs.理查夫人不想吓唬这可怜的人，所以她很快地藏到楼梯下的小贮藏室里。9. Bruce engaged low gear and drove at a _____ speed.布鲁斯接通了低速挡，开车速度快得令人害怕。10. The clap of thunder _____ us. 雷鸣般的掌声惊呆了我。Group Fouranxiety, worries, Concern11. I think rich people have about as many ______ as poor ones.我认为富人和穷人的烦恼一样多。12. At the most, he will experience feelings of _____, shame, insecurity, and helplessness.他至多能体验到忧虑、耻辱、不安和无助感。13. ______ for man himself and his fate must always form the chief interest of all technical endeavors.对人类自身及其命运的关注，必将成为所有技术事业的主要关注内容。
下列各项中，应计入出口货物完税价格的是
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