问题
问答题 简答题
日本专家岛村昭治将材料的发展历史划分为哪五代？
答案
参考答案：
旧石器时代；新石器时代；青铜器时代；铁器时代；高分子材料与硅材料时代
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日本专家岛村昭治将材料的发展历史划分为哪五代？
参考答案：
旧石器时代；新石器时代；青铜器时代；铁器时代；高分子材料与硅材料时代
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| Our neighborhood used to be very quiet. However,these days, 1 things are happening in our neighborhood and everyone is unhappy. Zhao Jun, the local school teacher is extremely 2 . When he was interviewed by the local newspaper, he said, "Every night we hear strange noises 3 our window. My wife thinks that is could be an 4 , but my friends and I think it must be teenagers having 5 . My parents called the police, but they can't 6 anything strange. They think it might be the 7 . I don't think so!" Zhao Jun's next door neighbor Xiang Dan is 8 , too. "At first, I thought it might bea cat, but I can't see a cat, and I still hear the noises outside." Everyone in our neighborhood is worried, and everyone has his or her own 9 . There must be somthing 10 the homes in our neighborhood, but what is it? | ||||
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