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诗句“不敢高声语,恐惊天上人”中的“高”是指声音的__________大;发出较强声音的喇叭能使它前面的烛焰“跳舞”,说明声波具有___________;听不同乐器弹奏同一首歌曲时能分辨出所用乐器,是利用了声音的_________不同.

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一部科幻电影中有这样的场面:一艘飞船在太空中遇险,另一艘飞船前去营救的途中,突然听到了遇险飞船的巨大爆炸声,然后看到了爆炸的火光。请你给导演指出这个场景中的科学性的错误:(1)                                  ;(2)                                          。

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小凡同学在4块相同的玻璃板上各滴一滴质量相同的水,进行如下图所示的实验探究,得出水蒸发快慢与水的温度、水的表面积和水面上方空气流动快慢有关.
(1)通过A、B两图的对比,可以得出水蒸发快慢与水的              有关.
(2)通过      、        两图的对比,可以得出水蒸发快慢与水的温度有关.
(3)我们知道液体蒸发时要吸热,请你举一个应用蒸发吸热的事例:                   .

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扬声器播放音乐时,放在纸盆上的小纸片会不断地跳动。这个实验是用来探究(  )
A.声音能否在真空中传播B.声音产生的原因
C.音调是否与频率有关D.乐音与噪声的区别

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CCTV青年歌手大奖赛中有道辨听题:“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(   )
A.音调B.音色C.响度D.频率

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南音以其独特的民族风格和浓郁的乡土气息,在闽南民间广泛流传。它的主奏乐器琵琶弹奏时那缠绵深沉的琴声是靠琴弦         产生的;琴声是通过         传到人耳的。

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在元旦文艺汇演上,小明弹奏电吉它时不断用手指去控制琴弦长度,这样做的目的是为了改变声音的        ;琴弦越短时振动越快,         越高。

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Mr. Smith was an old miser (守财奴). He had a lot of   16  , but he never bought anything     17 . He and his wife lived in an old house outside the town. He often went to the shop  18  in order to save some money. In the   19 , as soon as it was dark in the room, he   20 . He had no TV but bought a cheap radio and often 21 the advertisements.
The old man had no   22 , his wife was often ill. He wouldn’t send her to the hospital. He thought he would   23  much to the doctors if they looked her over. He bought a few medical books and bought some  24  for her.
One night, Mrs. Smith felt unwell. She had got a bad headache. She asked her husband to      25 a doctor, but he didn’t agree. He brought out some pills and made her  26  them. But it was no use.
The old woman began to   27  at home. Mr. Smith locked the door and went in another room and     28  there. The next morning, when he woke up, he came into her   29 to see if she was all right. But he found the poor woman had died. He hurried to the telephone, but   30  his mind at once. He ran out and shouted to the servant (佣人), “Don’t cook breakfast for Mrs. Smith this morning, Linda!”
【小题1】
A.booksB.shoes C.clothesD.money
【小题2】
A.badB.goodC.expensiveD.cheap
【小题3】
A.on footB.by carC.by taxiD.by motorbike
【小题4】
A.dayB.afternoonC.midnightD.night
【小题5】
A.went to danceB.went to the cinema
C.read newspaperD.went to bed
【小题6】
A.listened toB.watchedC.mendedD.looked at
【小题7】
A.brothersB.sistersC.unclesD.children
【小题8】
A.passB.tellC.payD.sell
【小题9】
A.foodB.medicineC.fruitD.vegetables
【小题10】
A.look forB.take care of
C.catch up withD.send for
【小题11】
A.takeB.drinkC.to takeD.to drink
【小题12】
A.laughB.singC.cryD.dance
【小题13】
A.sleptB.playedC.workedD.drank
【小题14】
A.workplaceB.bedroomC.libraryD.office
【小题15】
A.keptB.finishedC.changedD.forgot

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After our hospital visit, my husband and I needed cheering up, so we thought we would treat ourselves to a big breakfast at our favorite restaurant. While we were waiting for our meals, we decided to use all our small change and make our wallets light, so we counted it out as we waited.
I vaguely(含糊地) remember seeing a man sitting nearby. When our meals arrived, we found a note. It read,” Your breakfast has been paid for. Hope you have a lovely day.”
It was a wonderful surprise as nothing like that had ever happened to us. He must have thought we could hardly pay the bill. We looked around to thank him, but he had left. As retirees(退休者),we were grateful for the help like this, but it was the kindness of a total stranger that meant so much more to us.
【小题1】The old couple went to restaurant for a big breakfast in order to _______.
A.become happierB.become healthier
C.become lighterD.become younger
【小题2】What have you learnt from the story?
A.The old couple couldn’t afford the meal.
B.The old couple paid the meal by small change.
C.The old couple had a free meal in the end
D.The old couple bought the man a big breakfast
【小题3】Clearly, the man sitting near the couple was _______.
A.poorB.richC.helpfulD.grateful

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Mitzi
Lost Wednesday evening
French poodle(卷毛狗) called Mitzi
Brown, 5 year old, good reward
Phone Barbara
555-4140 anytime
Bluey
Lost blue\ white Persian male cat
12months old, friendly nature
Any info about Bluey
Large reward
Tom 555-2732 evenings
              Pet-Cats
Burmese kittens 11 weeks old
2 female 4 male 1 Red
Others various colors
Gentle and registered(注册)$250
Sandy 555-0001 mornings
           Pet-Dogs
Small dogs\short legs \long body
3 red 2 male 1 female
5 months old, registered
Sale $280
Phone Carl 555-9019 afternoon
【小题1】If you want to buy a little dog, you can call _______.
A.555-9019B.555-0001C.555-4140D.555-2732
【小题2】If you tell the owner where Bluey is, you will be give _______.
A.a gold medalB.a large pet
C.a great prizeD.a lot of money
【小题3】Who is available to answer the call 24 hours a day?
A. Barbara                           B. Tom
B. Carl                              D. Sandy
【小题4】The above four notices are all about _______.
A.dogsB.catsC.petsD.selling pets

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