【正文】
列詞語中加點字的讀音都正確的一項是()A.褶(zhě)皺 阻遏(232。BCCDCC二、填空題 11 小于1甲 乙1℃、降低1水蒸氣,凝華,內(nèi),放出,外1多(各)綠 紫外線 1113:11小 上升三、實驗,探究題12(1)50 晶體(2)冰 鐵(3)固 30(4)熔化 吸熱22四、簡答題2【解析】兩只耳朵可以分辨聲源的方向,主要有三個方面的原因:一是對同一聲音兩只耳朵感受的強(qiáng)度不一樣;二是對同一聲音兩只耳朵感受到的時間有先后;,有一個共同原因,:因為你敲擊時,站在該同學(xué)的正前方或正后方,那么他的兩只耳朵到聲源的距離就一樣,那么他就無法從強(qiáng)度、時間、作圖題2六、綜合題2(1)(2)55;圖上注明第三篇:人教版八年級語文上冊期末試卷及答案八年級語文上冊期末試卷及答案 溫馨提醒: 1.全卷共七大題,26小題,滿分為100分。六、綜合題2下表是6名學(xué)生的身高和身體質(zhì)量的數(shù)據(jù),根據(jù)表回答下列問題:(1)請畫一幅曲線圖將上表中的數(shù)據(jù)表示出來;(2)以已知的數(shù)據(jù)和所做的曲線圖,預(yù)測一個身高為160cm學(xué)生的質(zhì)量最接近于 kg,并在曲線圖上注出。步驟:① 在水杯中裝入適量水,將口香糖瓶放入水杯中使其豎直漂浮,用刻度尺測出________________為h1。(1)賈銘同學(xué)讀出了量筒中水和口香糖3的總體積(如圖甲)為_________cm(2)他把天平放在水平桌面上,將游碼移到標(biāo)尺的零刻線處,發(fā)現(xiàn)指針偏向分度盤的右側(cè),此時應(yīng)將平衡螺母向_________(選填“左”或“有”)調(diào)。2在“觀察水的沸騰”實驗中,實驗裝置如圖5所示:(3分)(1)實驗時所選用的溫度計應(yīng)該是____________溫度計。2如圖是某種物質(zhì)理想的熔化時溫度隨時間變化的圖像,根據(jù)圖像回答下列問題(1)該物質(zhì)的熔點為℃,該固體物質(zhì)是一種。我們在高中物理當(dāng)中也有很多這樣定義的物理量,如:把物體在單位時間內(nèi)速度的變化量叫加速度(注:速度的變化量用△表示,它等于前后兩次速度之差;加速度用字母a表示,國際單2位是m/s)。(4)由實驗看出,小車在下滑過程中速度越來越,是在做 運動。(3)請根據(jù)圖中信息回答:sAB=____cm。如果用玻璃燒杯將兩支蠟燭罩在里面,發(fā)現(xiàn)較長的一支蠟燭先熄滅,這是由于燃燒產(chǎn)生的高溫的二氧化碳?xì)怏w的密度比空氣密度要,從而二氧化碳?xì)怏w(填“上升”或“下降”)的緣故。內(nèi)層由甲物質(zhì)組成,外層有乙物質(zhì)組成,且內(nèi)層半徑是外層半徑的1/3。.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,水蒸氣變成水珠會熱量。1現(xiàn)在使用的溫度計是根據(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,且這支溫度計的兩端都沒有畫全。這是因為 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,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,人們會感到外面萬籟俱靜。received 。must ’t。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。(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。should __________ a present from his friend yesterday, and he _________ it 。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)。從圖形可知________圖響度大,__