题干

08年的CCTV青年歌手大奖赛中有道辩听题:“先听音乐,后判断该音乐是用哪种乐器演奏的”。歌手能判断出用哪种乐器演奏是依据声音的____来判断的;演播厅外面出现嘈杂的声音,关上门窗是为了在____减弱噪声,而我们能从不同角度看清歌手,是因为光在歌手表面发生了____的缘故。
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答案(点此获取答案解析)

音色,传播过程中,漫反射

同类题2

根据短文内容,选择正确的答案。

C

    A man died and was on his way to another world, either heaven (天堂) or hell (地狱). When he was halfway there, he saw a beautiful, huge palace. The owner came out and asked the man to stay and live in the palace.

    "And now I just want to eat and sleep without doing any work."The man said: "I have been working hard my whole life.

    The owner of the palace said: "If so, there is nowhere else better than here for you. There is a wealth of seafood and many other delicious foods in my palace. You can eat whatever you want without anyone stopping you. And you can rest assured (肯定的) that nothing needs to be done by you."

    "That is great! This must be heaven!" said the man. And he settled down (定居) in the palace.

    At first, the man felt very happy with a life of eating and sleeping. But gradually, he felt a bit lonely and bored.

    So he went to the owner and said: "Just eating and sleeping every day is very boring. Now I'm losing interest in this kind of life. Could you help me find a job?"

    The owner replied: "Sorry, there are no jobs here at all."

    After another few months, the man could not stand it any more and went to the owner again. "I really can't stand this kind of life any more," he said. "If you do not offer me a job, I would prefer (宁愿) to go to hell rather than (也不) live here."

    The owner of the palace smiled. "Where do you think we are now?" he said. "Heaven? We are actually (实际上) in hell!"