【正文】 質(zhì)組成，且內(nèi)層半徑是外層半徑的1/3。1如圖7所示，一束太陽光經(jīng)過三棱鏡到達(dá)綠紙做的光屏上，光屏上應(yīng)該有________種可見色光，但眼睛只能在光屏上看到_________光；對于流入市場上的假幣，人們常借助驗(yàn)鈔機(jī)發(fā)出的___________來辨別真?zhèn)巍?寒冬，坐滿人的汽車門窗緊閉，水蒸氣液化成小水珠附著在玻璃車窗側(cè)，使玻璃變模糊，水蒸氣變成水珠會(huì)熱量。而世界上的第一支伽利略氣體溫度計(jì)，卻是根據(jù)氣體的熱脹冷縮性質(zhì)制成的，如圖所示，球形容器內(nèi)是空氣，下方的燒杯內(nèi)盛水，一天，發(fā)現(xiàn)液面由A上升到B位置，則表明氣溫(填升高、降低或不變）。1現(xiàn)在使用的溫度計(jì)是根據(jù)液體的熱脹冷縮的性質(zhì)制成的，如圖是一支水平放置的溫度計(jì)，且這支溫度計(jì)的兩端都沒有畫全。（選填“大于”、“等于”或“小于”）1如右圖所示是兩個(gè)聲音在同一個(gè)示波器上顯示出來的波形。這是因?yàn)?A、以地面為參照物鳥的速度非常大B、以機(jī)場內(nèi)步行的人為參照物，鳥的速度非常大 C、以停在機(jī)場內(nèi)的飛機(jī)為參照物，鳥的速度很大 D、以正在飛行的飛機(jī)為參照物，鳥的速度很大下列關(guān)于聲音的產(chǎn)生和傳播的說法中，正確的是（）A．聲音都是靠空氣來傳播的 B．只要物體振動(dòng)，就能聽到聲音C．回聲是聲音被障礙物反射而形成的 D．聲音的傳播速度不受周圍環(huán)境溫度的影響如圖所示是海螺形超聲波加濕器，關(guān)于加濕器的說法不正確的是（）A．加濕器是利用超聲波工作的B．加濕器的工作過程利用了聲音的能量特性 C．加濕器工作過程中，人聽到的聲音是超聲波 D．超聲波的傳播也需要介質(zhì)，不能在真空中傳播一場大雪過后，人們會(huì)感到外面萬籟俱靜。accepted 。received 。can not。must ’t。(每段對話讀兩遍)(每小題1分，滿分5分) can we open the gift in China? it it it at you drive a car at the age of seventeen in China?, we , we can’, we can you get married in Britain? the age of the age of the age of can you dress at a traditional wedding in Britain? white red black you drive on the righthand side of the road in America?, we can’, we , we must.(三)聽短文，選擇正確的答案。第一篇：八年級上冊英語期末試卷及答案一、聽力測試(滿分20分)(一)聽句子，選擇適當(dāng)?shù)拇鹫Z。(每個(gè)句子讀一遍)(每小題1分，滿分5分) a two , you mustn’, you , you can’ white black red , we , we can’, we mustn’, we , we can’, we mustn’t.(二)聽對話，選擇正確的答案。(短文讀兩遍)(每小題2分，滿分10分) must take care of every mother father my mother gets home, she usually can’t without TV the telephone to music mother doesn’t want me my homework music should clean up my a month a week a month二、單項(xiàng)填空(每小題1分，滿分10分) listen to the teacher carefully in 17.—Mum, must I do my homework now?—No, do it ’t。may ’t。should __________ a present from his friend yesterday, and he _________ it 。accepted。received , ’s have a chat Tom and David good at often played 21.—Hi, you going to go shopping this Sunday afternoon?—I’m not go to the park with my need practise really enjoy the a student, you must arrive at school time time the first time time to time’d better there ’s ’t go ’t going’t go go三、完形填空(，滿分15分)The summer vacation is the best time for can go outdoors and have can go to big cities to 26 , or go to the countryside to enjoy the beauty of is an American middle school student and he loves 28 very always travels in his summer vacation he wants to do is interested in Chinese he is flying to Beijing and Xi’an for the summer is leaving on July 12th and 31 New York on the last day of the plans 32 a fantastic the 33 , he is visiting places of interest and going night, he is 34 to enjoy the night is sure he will have a 35 TV sightseeing fishing difference something different something back to back to back back to have having a walk walks a walk walks 四、閱讀理解(每小題2分，滿分20分)AIt’s true that every country has its all know that in America if people are pleased with you, they will give you a sign “OK”.But maybe you don’t know this sign is considered to be rude in Poland, guests usually choose flowers as presents for hostesses(女主人).Remember the number must be an odd(奇數(shù)) the hostess doesn’t hope that you remove the cover of the bunch(束)of must be more careful when you give red roses to a woman because the red rose means China we often hear people say that “nodding” means agreement(同意).And “shaking the head” means in Bulgaria they mean the really need to pay more attention to the differences in ’s more, we should learn more about them in order to avoid embarrassment(尷尬).Do remember: When in Rome, do as the Romans do.第二篇：八年級上冊物理期末試卷及答案八年級上冊物理期末試卷一、選擇題如圖，是小明用刻度尺測量一條形金屬片長度的情形，該刻度尺的分度值和金屬片的長度分別是 A、1cm、 B、1mm、 C、1mm、 D、1cm、機(jī)場周圍不允許有鳥類飛行，以免撞毀飛機(jī)。究其原因，你認(rèn)為正確的是A．可能是大雪后，行駛的車輛減少，噪聲減小 B．可能是大雪蓬松且多孔，對噪聲有吸收作用 C．可能是大雪后，大地銀裝素裹，噪聲被反射 D．可能是大雪后氣溫較低，噪聲傳播速度變慢如圖1所示的四個(gè)情景中，由光的直線傳播形成的是【 】黑板發(fā)生反光會(huì)使學(xué)生看不清黑板上的字，有關(guān)說法中錯(cuò)誤的是A．坐在兩側(cè)的學(xué)生容易觀察到黑板反光 B．黑板發(fā)生鏡面反射，進(jìn)入人眼的光線較強(qiáng) C．字發(fā)生漫反射，沒有光線進(jìn)入人的眼睛 D．為了避免反光，黑板應(yīng)打磨得粗糙些如圖所示，一平面鏡垂直于凸透鏡的主光軸，位于凸