2011年北京时间9月8日8时15分,中国地震网通过接收到的 (选填“超声波”或“次声波”)测定新疆乌恰县发生3.6级地震,这种声波人耳 (选填“能”或“不能”)听到.人的听觉频率范围是: Hz至 20000Hz之间.
次声波;不能;20
2011年北京时间9月8日8时15分,中国地震网通过接收到的 (选填“超声波”或“次声波”)测定新疆乌恰县发生3.6级地震,这种声波人耳 (选填“能”或“不能”)听到.人的听觉频率范围是: Hz至 20000Hz之间.
次声波;不能;20
阅读对话,完成第1-5小题。 | |
Kim: What do you want to do in the future, Bob? Bob: I want to become a well-known writer, 1_____ Kim: I want to be a singer. I enjoy singing very much. Bob: I always hear you sing in your classroom and in the dormitory. Kim: You know, practicing is very important. My teacher always asks me to practice as much as possible. Bob: 2_____ Kim: Three hours a day on weekdays and six hours a day on weekends. Bob: Do you think it is boring to practice singing every day? Kim: 3_____ Singing is a great pleasure for me. I have entered for the "Future Star Cup" singing contest. It will be held next week. Bob: Do you think you will win in the contest? Kim: Yes. Before I entered for this contest, I had already taken part in many singing contests, and I had won some prizes. I'm very confident about myself. By the way, I've heard that our school held a composition (作文) contest last week. 4_____ Bob: No, I didn't think I would win it. I don't practice 'writing compositions much, you know. Kim: You should write more and take every chance to practice, or your wish to become a great writer will not come true. Bob: 5_____ Kim: You're welcome. | |
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