小华买了一个MP5，开机后响起了动听的歌声，他说“是周杰伦在演唱”他是根据声音的　　不同来判断的；接着他又调节了音量按钮，这是为了改变声音的　　；小华听MP5播放的声音主要是通过　　（选填“气体”、“液体”或“固体”）传播的．

Whose MP5 is this, Tina?— It’s _____. My mother bought it for me last Sunday. It’s _______ MP5 . It can be used to listen music and watch movies . It’s ________ useful invention . 又来看戏听歌声 东湖阁里听歌声 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. 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. Dad. Could I have an MP5 like this —Certainly. We can buy ______ one, but asgood as this one. 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. 当一个人在一个拥挤的城区买了一辆汽车时，它就引起了（） Allen, why do you like MP5 players so much – Mom, they are very smaller ______ I can carry them easily. Thank you for lending me your MP5 player. Can Ireturn it to you next Monday—–________. I’ve bought a new one. would you please buy me an MP5 player — If you can help do some housework the whole vacation, you ____have one as a reward 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 would you please buy me an MP5 player— If you can help do some housework the whole vacation，you ____ have one asa reward Mum, would you please buy me an MP5 player?—If you can help do the dishes the whole vacation, you ________ have one as a reward.