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北師大初中數(shù)學(xué)八年級(jí)上冊(cè)二元一次方程與一次函數(shù)2教案

  • 湖北省咸寧市2019年中考語(yǔ)文真題試題(含解析)

    湖北省咸寧市2019年中考語(yǔ)文真題試題(含解析)

    微塑料在海洋中的擴(kuò)散性更強(qiáng)。荷蘭科學(xué)家曾研究過(guò)太平洋塑料垃圾帶,發(fā)現(xiàn)塑社雖然只占到塑料總質(zhì)量的8%,但是卻占到浮在此區(qū)域塑料面積的94%。微塑料在海洋中無(wú)處不在,且具有很大的隱藏性。2017年,我國(guó)“蛟龍?zhí)枴陛d人潛水器從大洋深處4500米處帶回的海洋生物,在其體內(nèi)竟也檢出微塑料的成分。微塑料更容易進(jìn)入食物鏈,對(duì)海洋生態(tài)系統(tǒng)造成嚴(yán)重的影響。美國(guó)有關(guān)人士曾指出,丟棄在水中的塑料拉圾已危害到逾600種海洋生物,造成鯨魚(yú)、海龜、海豚、魚(yú)和海鳥(niǎo)等受傷或死亡。

  • 湖北省咸寧市2019年中考語(yǔ)文真題試題

    湖北省咸寧市2019年中考語(yǔ)文真題試題

    那么,微塑料來(lái)自何處呢?海洋微塑料既有海源方面的輸入,也有陸源方面的輸入而陸源方面的輸入是海洋中塑料污染的主要來(lái)源,主要是人類在生產(chǎn)和生活中丟棄的塑料廢棄物等。除了望料拉圾外,人類常用的洗滌劑、護(hù)膚品及工業(yè)原料等也含有大量微塑料成分,這些微塑料成分隨污水排出,往往會(huì)隨著陸源垃圾輸入到海洋當(dāng)中。

  • 湖北省十堰市2019年中考語(yǔ)文真題試題

    湖北省十堰市2019年中考語(yǔ)文真題試題

    這套說(shuō)法你一定經(jīng)常聽(tīng)說(shuō),它被不少人奉為養(yǎng)生經(jīng)典。然而,就在2018年11月2日,這套理論終于被“官宣”為偽科學(xué),美國(guó)圣地亞哥法庭判羅伯特.歐陽(yáng)賠償一名癌癥患者1.05億美元,這位羅伯特就是大名鼎鼎的酸堿體質(zhì)理論創(chuàng)始人,他將紅肉、糖、蛋、奶制品、酒精、咖啡等歸類為酸性食物將蔬菜、水果,谷物、魚(yú)類等歸類為堿性食物。他不僅寫(xiě)了四本書(shū)來(lái)推廣這套理論,還大膽地以這套理論為依據(jù)治療癌癥患者,癌癥患者按照他的要求,放棄化療,采用他獨(dú)創(chuàng)的堿性療法治療,吃堿性食物,注射高達(dá)500美元一針的小蘇打針劑,最終導(dǎo)致癌癥患者病情惡化到四期。

  • 2022年湖北省鄂州市中考英語(yǔ)真題(原卷版)

    2022年湖北省鄂州市中考英語(yǔ)真題(原卷版)

    Dealing with a nosebleed(鼻出血)mightseem simple. But recently, the British RED Cross asked parents with youngchildren how to help a child with a nosebleed. About 65 percent of parents didnot ____11____ the correct action to help.

  • 2022年湖北省荊州市中考英語(yǔ)真題(解析版)

    2022年湖北省荊州市中考英語(yǔ)真題(解析版)

    One night many yearsago, an angry voice woke me up from sleep. It was my drunken (喝醉的) father. Those days, he would always ___11___ home very late. Sometimes, he would also go on to fight with my mom.

  • 2022年湖北省鄂州市中考英語(yǔ)真題(解析版)

    2022年湖北省鄂州市中考英語(yǔ)真題(解析版)

    Dealing with a nosebleed(鼻出血)mightseem simple. But recently, the British RED Cross asked parents with youngchildren how to help a child with a nosebleed. About 65 percent of parents didnot ____11____the correct action to help.

  • 2022年湖北省荊州市中考英語(yǔ)真題(原卷版)

    2022年湖北省荊州市中考英語(yǔ)真題(原卷版)

    My earliest memory ofthese events began when I was around four years old. I was filled with ___12___ at that time. There were lots of ___13___ — crying, shouting, and doors slamming (砰地關(guān)上).

  • 2022年湖北省武漢市中考英語(yǔ)真題(解析版)

    2022年湖北省武漢市中考英語(yǔ)真題(解析版)

    The December day started like any other. Papacame back with his boat full of fish. Mama made breakfast for the family.Seven-year-old Joonas was doing his homework, while his two little brothers ranaround the yard. That day seemed peaceful, but Alejo ____16____ better.

  • 2022年湖北省恩施州中考英語(yǔ)真題(解析版)

    2022年湖北省恩施州中考英語(yǔ)真題(解析版)

    Once, herfather took her to the kitchen. He asked Jane to take a potato, an egg ____11____ two spoons of tea leaves. Jane was ____12____, andasked her father, “Do you want me to cook?”

  • 2022年湖北省宜昌市中考英語(yǔ)試題(解析版)

    2022年湖北省宜昌市中考英語(yǔ)試題(解析版)

    Duringwork hours in Becker’s bread shop, the kitchen is especially quiet except thesound of the machine. The quiet environment is not the result of the strictrules, but because all the workers are deaf. They use sign language tocommunicate with each other from time to time.

  • 2022年湖北省宜昌市中考英語(yǔ)試題(原卷版)

    2022年湖北省宜昌市中考英語(yǔ)試題(原卷版)

    Why do you need hobbies? A study has found thatpeople are more positive (積極的) when they take part in a relaxing activity. ___36___Scientists also think they might be good for your brain.

  • 2022年湖北省十堰市中考英語(yǔ)真題(解析版)

    2022年湖北省十堰市中考英語(yǔ)真題(解析版)

    My arms were shaking and my heart was beating ____19____ when I stood at thestarting line. ____20____the endless runway (跑道), I felt like a boat fighting against the windand rain. I ____21____myself that simply joining in was a victory (勝利) itself.

  • 2022年湖北省十堰市中考英語(yǔ)真題(原卷版)

    2022年湖北省十堰市中考英語(yǔ)真題(原卷版)

    My arms were shaking and my heart was beating ____19____when I stood at the starting line. ____20____ the endless runway (跑道), I felt like a boatfighting against the wind and rain.

  • 2022年湖北省武漢市中考英語(yǔ)真題(原卷版)

    2022年湖北省武漢市中考英語(yǔ)真題(原卷版)

    The December day started like any other. Papacame back with his boat full of fish. Mama made breakfast for the family.Seven-year-old Joonas was doing his homework, while his two little brothers ranaround the yard.

  • 2022年湖北省恩施州中考英語(yǔ)真題(原卷版)

    2022年湖北省恩施州中考英語(yǔ)真題(原卷版)

    Once, herfather took her to the kitchen. He asked Jane to take a potato, an egg ____11____two spoons of tea leaves. Jane was ____12____, and asked her father, “Doyou want me to cook?”

  • 2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(解析版)

    2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(解析版)

    Ibelieved that I was right and he was wrong, and Tony believed that I was wrongand he was right. Our teacher, a kind and smart lady, decided to teach us alesson. She brought us to the front of the class and placed him on one side ofher desk and me on the other. In the middle of her desk was a large and roundobject. I could clearly see that it was black. The teacher asked us what colorthe object was. “White,” Tony answered. I couldn’t believe he said the objectwas white! “Clearly, it was black!” Another argument started between Tony andme, this time about the color of the object.

  • 2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(解析版)

    2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(解析版)

    Ibelieved that I was right and he was wrong, and Tony believed that I was wrongand he was right. Our teacher, a kind and smart lady, decided to teach us alesson. She brought us to the front of the class and placed him on one side ofher desk and me on the other. In the middle of her desk was a large and roundobject. I could clearly see that it was black. The teacher asked us what colorthe object was. “White,” Tony answered. I couldn’t believe he said the objectwas white! “Clearly, it was black!” Another argument started between Tony andme, this time about the color of the object.

  • 2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(原卷版)

    2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(原卷版)

    Ibelieved that I was right and he was wrong, and Tony believed that I was wrongand he was right. Our teacher, a kind and smart lady, decided to teach us alesson. She brought us to the front of the class and placed him on one side ofher desk and me on the other. In the middle of her desk was a large and roundobject. I could clearly see that it was black. The teacher asked us what colorthe object was. “White,” Tony answered. I couldn’t believe he said the object waswhite! “Clearly, it was black!” Another argument started between Tony and me,this time about the color of the object.

  • 2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(原卷版)

    2022年廣西北部灣經(jīng)濟(jì)區(qū)中考英語(yǔ)真題(原卷版)

    By usingthis method, the study found that red meats were the most unfriendly foods tothe environment. Keeping farm animals produces a large number of methane(甲烷)that keeps 30 times more heat than CO2. As well asmaking the earth warmer, eating too much red meat is known to increase the riskof a few illnesses, such as heart trouble.

  • 湖北省襄陽(yáng)市2019年中考語(yǔ)文真題試題

    湖北省襄陽(yáng)市2019年中考語(yǔ)文真題試題

    錢學(xué)森經(jīng)歷了重重的艱難險(xiǎn)阻后,終于回到了祖國(guó)?;貒?guó)后他受到了最高規(guī)格的待遇,主席經(jīng)常和他在一起,討論國(guó)家以后的發(fā)展。主席曾經(jīng)問(wèn)過(guò)錢學(xué)森,為什么要執(zhí)意回國(guó),美國(guó)的待遇這么好,回來(lái)后悔嗎?錢學(xué)森異常認(rèn)真地說(shuō):“茍利國(guó)家,不求富貴?!卑藗€(gè)字?jǐn)S地有聲,聽(tīng)者無(wú)不為其鼓掌。2018年 10月11日下午,在邊境掃雷行動(dòng)中,面對(duì)復(fù)雜雷場(chǎng)中的不明爆炸物,杜富國(guó)對(duì)戰(zhàn)友大喊:“你退后, 讓我來(lái)!”在進(jìn)一步查明情況時(shí)突遇爆炸,他英勇負(fù)傷,失去雙手和雙眼,同組戰(zhàn)友安然無(wú)恙?!拔抑皇亲隽艘粋€(gè)軍人應(yīng)該做的選擇?!边@個(gè)陽(yáng)光帥氣的小伙,對(duì)雷場(chǎng)救下戰(zhàn)友這個(gè)選擇,從未后悔過(guò)。

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