小强买了个MP5，开机后小喇叭里响起了动听的歌声，他说“是周杰伦在演唱．”他的判断是根据声音的      不同；接着他又调节了音量按钮，这是为了改变声音的       ；小明又利用MP5的录音功能录了一段自己的讲话声，可是播放时听起来他感觉不像自己的声音，这是因为小明听MP5播放的声音主要是通过        （选填“气体”或“固体”）传播，而自己听自己讲话的声音，主要是通过         （选填“气体”或“固体”）传播．

Whose MP5 is this, Tina?— It’s _____. My mother bought it for me last Sunday. 又来看戏听歌声 爱唱歌的小喇叭 What a nice MP5! Whose is it? — It’s . My father bought me last week. What would you like for your birthday What aboutan MP5—-Oh, to tell the truth, I ______ have an I-Pad thanan MP5. What would you like for your birthday ? What aboutan MP5?—-Oh, to tell the truth, I ______ have an I-Pad thanan MP5.A．prefer Susan, whatare the advantages of MP5 players—Mom, they aresmaller and lighter ______ they can be carried very easily. mp3不仅可以听歌还是一个（）。 Excuse me, but can you help me to repair my MP5 ?—Why not _______ your knowledge of physics _______ practice?[ ] Do you like this MP5 player, Tom—Yes. It can play beautiful music, __________it is very expensive. 在幻灯片中插入的声音用一个小喇叭图标表示。 插入音频后会自动出现一个小喇叭图标，如何将其隐藏？ Dad. Could I have an MP5 like this —Certainly. We can buy ______ one, but asgood as this one. 小喇叭更合适室外应用场景播报（） Allen, why do you like MP5 players so much—Mom, they are smaller and lighter they can be carried very easily. －What wouldyou like for your birthday What about an MP5 －Oh, to tell the truth, I ______ have an I-Pad than anMP5. 牵牛花对于小喇叭相当于（）对于（） Allen, why do you like MP5 players so much – Mom, they are very smaller ______ I can carry them easily. 当喇叭里响起“我爱你，就像老鼠爱大米……”时，王丹和李明齐声说“杨臣刚唱的。”他们的判断是根据声音的 Mum, would you please buy me a MP5 player—If you can help do the dishes the whole vacation，you have one as a reward