1.简答题- (共1题)
(1)过氧乙酸的相对分子质量为________。
(2)过氧乙酸中C、H、O三种元素的质量比为________。
(3)现要配制100 kg质量分数为0.5%的过氧乙酸消毒液,需要质量分数为16%的过氧乙酸溶液________kg。
2.计算题- (共1题)
3.流程题- (共1题)

(1)操作Ⅰ的名称是________,此操作中需要用到的玻璃仪器有:烧杯、玻璃棒和________。蒸发过程中需要用到玻璃棒,它的作用是____________
(2)取滤液加入盐酸,生成的气体使澄清石灰水变浑浊,由此可推断草木灰的主要成分是(写名称)________。上述有关反应的化学方程式为________________、________________。
4.科学探究题- (共1题)
成 分:苛性钠、碳酸钠、铝粒、催化剂。
特 点:使用时,“管道通”样品倒入排水口,加水,瞬间释放高效泡沫,能溶解油脂、毛发、茶叶等,确保管道畅通。
注意事项:使用时不能碰明火,禁止与皮肤接触。
(提出问题)高效泡沫中含有什么气体?为什么使用时不能碰明火?
(猜 想)含有氢气。
(1)查阅资料得知:常温下,铝能与氢氧化钠溶液反应放出氢气。反应的化学方程式是2Al+2NaOH+2X===2NaAlO2+3H2↑,试推测X的化学式是________。
(2)取“管道通”样品进行下图所示实验。请在下表空格处填写相应内容:
实验内容 | 实验现象 | 实验结论及解释 |
制取气体![]() | 样品逐渐减少,产生大量气泡,盛装样品的试管外壁发烫 | 反应生成气体,并 (填“吸收”或“放出”)热量 |
检验气体![]() | 发出爆鸣声 | 该气体是 ,反应的化学方程式为 |
(3)“注意事项”中,“禁止与皮肤接触”是因为“管道通”成分中的________有强腐蚀性,使用时“不能碰明火”的理由是_____________________________。
5.单选题- (共12题)

A.溶液中溶质的质量分数不变 |
B.溶液质量增加 |
C.溶液中溶质的溶解度减小 |
D.溶液变成不饱和溶液 |
6.选择题- (共16题)
I love to tell the story about how I met my best friend---- Tiger. We met at the school fair. Each year, all the fourth-grade classes hold a school fair. Everyone in the fourth-grade works at the fair. Some sell ice cream, drinks and snacks. Others take care of the little children who ride the rides.
I got the second job and I've never regretted it, because that's where I met Tiger.
My job was to help little children get on the back of a little horse. I kept telling the children to wait their turn and holding ice cream for them while they rode about. One thing was clear to me. I was growing older and should be more responsible.
Suddenly, a boy came to the horse. He took the little horse's reins! The horse stopped, and the girl on its back started to fall. I was trying to reach the girl when I saw Tiger go by my legs. It held the horse's reins and pulled the horse away from my legs. I caught the girl just before we both hit the ground. The girl sat on top of me. She was laughing at the ice cream on my face. The horse's reins were in Tiger's mouth!
Thanks to Tiger's fast action, I saved the little girl. We were both heroes. And Tiger, the fastest dog I've even known became my new best friend.
I love to tell the story about how I met my best friend---- Tiger. We met at the school fair. Each year, all the fourth-grade classes hold a school fair. Everyone in the fourth-grade works at the fair. Some sell ice cream, drinks and snacks. Others take care of the little children who ride the rides.
I got the second job and I've never regretted it, because that's where I met Tiger.
My job was to help little children get on the back of a little horse. I kept telling the children to wait their turn and holding ice cream for them while they rode about. One thing was clear to me. I was growing older and should be more responsible.
Suddenly, a boy came to the horse. He took the little horse's reins! The horse stopped, and the girl on its back started to fall. I was trying to reach the girl when I saw Tiger go by my legs. It held the horse's reins and pulled the horse away from my legs. I caught the girl just before we both hit the ground. The girl sat on top of me. She was laughing at the ice cream on my face. The horse's reins were in Tiger's mouth!
Thanks to Tiger's fast action, I saved the little girl. We were both heroes. And Tiger, the fastest dog I've even known became my new best friend.
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细品寂寞
①人生在世,既不甘寂寞,又要耐得寂寞。既“不甘”又“耐得”,似乎冰炭不同炉,实则辩证统一。耐得寂寞是专心求一,厚实的底蕴在寂寞中沉淀,深邃的思想在寂寞中孕育,坚韧的意志在寂寞中磨炼;不甘寂寞是奋发向上,如火的激情在不甘中燃烧,惊人的创造在不甘中迸发,追求的目标在不甘中接近。“耐得”常务实,“不甘”促飞跃。“不甘”须“耐得”垫底,“耐得”须“不甘”引领。“不甘”与“耐得”两相交织,两者兼备,才能登得上乘境界。
②“巴蜀鬼才”魏明伦甘于寂寞,7岁学戏,9岁成为四川自贡市川剧团的“九龄童”,工龄四十多年,居然没有换过供职单住。他不甘寂寞,以“九部大戏、几卷杂文、两打碑赋”名扬天下。
③袁隆平甘于寂寞,风里来雨里去研究杂交水稻;不甘寂寞,时刻瞄准更高的目标。
④耐得寂寞,非是隐形遁迹,枯槁心灵;不甘寂寞,也非好高骛远,四面出击,而是专攻与博取同存,冷静与激情共聚,埋头与抬头互辅。对寂寞“耐得”和“不甘”,是人生的清醒之为,境界之为。境界到了,功夫到了,“耐得”和“不甘”,便成了腾飞之两翼,左右相助,得心应手,获得事业的成功和人生的辉煌。
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曹刿论战
十年春,齐师伐我,公将战。曹刿请见。其乡人曰:“肉食者谋之,又何间焉?”刿曰:“肉食者鄙,未能远谋。”乃入见。问:“何以战?”公曰:“衣食所安,弗敢专也,必以分人。”对曰:“小惠未徧,民弗从也。”公曰:“牺牲玉帛,弗敢加也,必以信。”对曰:“小信未孚,神弗福也。”公曰:“小大之狱,虽不能察,必以情。”对曰:“忠之属也。可以一战。战则请从。”
公与之乘,战于长勺。公将鼓之。刿曰:“未可。”齐人三鼓。刿曰:“可矣。”齐师败绩。公将驰之。刿曰:“未可。”下视其辙,登轼而望之,曰:“可矣。”遂逐齐师。
既克,公问其故。对曰:“夫战,勇气也。一鼓作气,再而衰,三而竭。彼竭我盈,故克之。夫大国难测也,惧有伏焉。吾视其辙乱,望其旗靡,故逐之。”
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[甲]得道多助,失道寡助
天时不如地利,地利不如人和。三里之城,七里之郭,环而攻之而不胜。夫环而攻之,必有得天时者矣;然而不胜者,是天时不如地利也。城非不高也,池非不深也,兵革非不坚利也,米粟非不多也;委而去之,地利不如人和也。故曰,域民不以封疆之界,固国不以山溪之险,威天下不以兵革之利。得道者多助,失道者寡助。寡助之至,亲戚畔之;多助之至,天下顺之。以天下之所顺,攻亲戚之所畔;故君子有不战,战必胜矣。
[乙]仁者无敌
梁惠王曰:“晋国,天下莫强焉叟之所知也。及寡人之身,东败于齐,长子死焉;西丧地于秦七百里;南辱于楚。寡人耻之,愿比死者一洒之①,如之何②则可?”
孟子对曰;“地方百里而可以王。王如施仁政于民,省刑罚,薄税敛,深耕易耨③;壮者以暇日修其孝悌忠信,入以事其父兄,出以事其长上。可使制梃以达秦楚之坚甲利兵矣。
“彼夺其民时,使不得耕耨以养其父母。父母冻饿,兄弟妻子离散,彼陷溺其民,王往而征之,夫谁与王敌?故曰:‘仁者无敌。’王请勿疑!”
【注释】①比:替,为;一:全,都;洒:洗刷。全句说,希望为全体死难者报仇雪恨。 ②如之何:对他怎么办。③易耨:及时除草。易,疾,速,快;耨,除草。
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[甲]得道多助,失道寡助
天时不如地利,地利不如人和。三里之城,七里之郭,环而攻之而不胜。夫环而攻之,必有得天时者矣;然而不胜者,是天时不如地利也。城非不高也,池非不深也,兵革非不坚利也,米粟非不多也;委而去之,地利不如人和也。故曰,域民不以封疆之界,固国不以山溪之险,威天下不以兵革之利。得道者多助,失道者寡助。寡助之至,亲戚畔之;多助之至,天下顺之。以天下之所顺,攻亲戚之所畔;故君子有不战,战必胜矣。
[乙]仁者无敌
梁惠王曰:“晋国,天下莫强焉叟之所知也。及寡人之身,东败于齐,长子死焉;西丧地于秦七百里;南辱于楚。寡人耻之,愿比死者一洒之①,如之何②则可?”
孟子对曰;“地方百里而可以王。王如施仁政于民,省刑罚,薄税敛,深耕易耨③;壮者以暇日修其孝悌忠信,入以事其父兄,出以事其长上。可使制梃以达秦楚之坚甲利兵矣。
“彼夺其民时,使不得耕耨以养其父母。父母冻饿,兄弟妻子离散,彼陷溺其民,王往而征之,夫谁与王敌?故曰:‘仁者无敌。’王请勿疑!”
【注释】①比:替,为;一:全,都;洒:洗刷。全句说,希望为全体死难者报仇雪恨。 ②如之何:对他怎么办。③易耨:及时除草。易,疾,速,快;耨,除草。
阅读下文,回答相关问题
[甲]得道多助,失道寡助
天时不如地利,地利不如人和。三里之城,七里之郭,环而攻之而不胜。夫环而攻之,必有得天时者矣;然而不胜者,是天时不如地利也。城非不高也,池非不深也,兵革非不坚利也,米粟非不多也;委而去之,地利不如人和也。故曰,域民不以封疆之界,固国不以山溪之险,威天下不以兵革之利。得道者多助,失道者寡助。寡助之至,亲戚畔之;多助之至,天下顺之。以天下之所顺,攻亲戚之所畔;故君子有不战,战必胜矣。
[乙]仁者无敌
梁惠王曰:“晋国,天下莫强焉叟之所知也。及寡人之身,东败于齐,长子死焉;西丧地于秦七百里;南辱于楚。寡人耻之,愿比死者一洒之①,如之何②则可?”
孟子对曰;“地方百里而可以王。王如施仁政于民,省刑罚,薄税敛,深耕易耨③;壮者以暇日修其孝悌忠信,入以事其父兄,出以事其长上。可使制梃以达秦楚之坚甲利兵矣。
“彼夺其民时,使不得耕耨以养其父母。父母冻饿,兄弟妻子离散,彼陷溺其民,王往而征之,夫谁与王敌?故曰:‘仁者无敌。’王请勿疑!”
【注释】①比:替,为;一:全,都;洒:洗刷。全句说,希望为全体死难者报仇雪恨。 ②如之何:对他怎么办。③易耨:及时除草。易,疾,速,快;耨,除草。
阅读下文,回答相关问题
有一种尊重叫平视
①屠格涅夫有篇著名的散文诗叫《乞丐》,写他在街上遇到一个衰老的乞丐,很想有所施舍,可搜遍全身口袋也没找到一钱一物。于是,只好紧握着乞丐伸出来的手说,请别见怪,兄弟,我什么也没带。乞丐也握了握屠格涅夫变冷的手,微笑着说,您能握着我的手叫兄弟,这也是一种施舍,同样让我感激不尽。
②人类自从进入社会形态后,便开始有了等级划分。这种等级秩序在奴隶制和封建制下最为明显,也更加严格,任何人不得逾越。现代社会主张人人平等,从法律上废除了等级制度,但这并不意味着根除了等级差别,更不意味着根除了等级观念。萧伯纳在莫斯科度假时遇到一个可爱的小姑娘,并同她一起玩耍。临别时,萧伯纳对小姑娘说,回去见了你妈妈,就说今天同你玩的是世界大作家萧伯纳。不料,那位小姑娘学着萧伯纳的口吻说,回去见了你妈妈,就说今天同你玩的是莫斯科小姑娘娜塔莎。这件事对萧伯纳的震动很大,他感慨地对朋友说:“一个人无论有多大成就,在人格上他与任何人都是平等的。”
③在这个世界上,尊重或鄙视一个地位比你高、活得比你好的人容易,尊重或关爱一个地位比你低、活得比你差的人就不那么容易了。有位企业家见一卖铅笔的小贩衣衫褴褛,顿生怜悯之情,把一元钱丢下来就走了。后来觉得不妥,回身从卖笔人那儿取出一枝铅笔,抱歉地解释自己忘记拿笔了,并且说,你我都是商人,你是卖家,我是买家。一年后的一次商务洽谈会上,一位穿着考究的商人认出了这位企业家,自我介绍说,您可能不记得我了,我就是当年那个卖铅笔的小贩。是您给了我做人的自尊和创业的勇气,如今真的成了一名小有成就的商人。
④人生天地间,原本并无尊卑贵贱之分,因世俗社会的打磨和熏染才变得势利起来。见到比自己地位高的人,要么仰视,要么鄙视;见到比自己地位低的人,要么俯视,要么漠视。这种心态一旦固化,在处理人际关系时,就会自觉不自觉地流露出来。《法门寺》里的贾桂,明武宗让他坐到身边的椅子上说说话,贾桂回答说,奴才站惯了,不想坐。正是因为这种心态作怪,人与人之间要做到平视,往往不那么容易。
⑤在高山大川面前,人们仰视或俯视,这是欣赏视角的需要;在人际关系中,人们要坚持平视,并使之成为习惯,这是维护自己和他人尊严的需要。惟平视才能客观、公平,惟平视才能达观、无私。平视,于己是一种自信,对人是一种尊重。所谓“在人之上,要把别人当人;在人之下,要把自己当人”,这也应当成为做人的一条道德底线。
(摘自香港《大公报》 文/王兆贵)
阅读下文,回答相关问题
有一种尊重叫平视
①屠格涅夫有篇著名的散文诗叫《乞丐》,写他在街上遇到一个衰老的乞丐,很想有所施舍,可搜遍全身口袋也没找到一钱一物。于是,只好紧握着乞丐伸出来的手说,请别见怪,兄弟,我什么也没带。乞丐也握了握屠格涅夫变冷的手,微笑着说,您能握着我的手叫兄弟,这也是一种施舍,同样让我感激不尽。
②人类自从进入社会形态后,便开始有了等级划分。这种等级秩序在奴隶制和封建制下最为明显,也更加严格,任何人不得逾越。现代社会主张人人平等,从法律上废除了等级制度,但这并不意味着根除了等级差别,更不意味着根除了等级观念。萧伯纳在莫斯科度假时遇到一个可爱的小姑娘,并同她一起玩耍。临别时,萧伯纳对小姑娘说,回去见了你妈妈,就说今天同你玩的是世界大作家萧伯纳。不料,那位小姑娘学着萧伯纳的口吻说,回去见了你妈妈,就说今天同你玩的是莫斯科小姑娘娜塔莎。这件事对萧伯纳的震动很大,他感慨地对朋友说:“一个人无论有多大成就,在人格上他与任何人都是平等的。”
③在这个世界上,尊重或鄙视一个地位比你高、活得比你好的人容易,尊重或关爱一个地位比你低、活得比你差的人就不那么容易了。有位企业家见一卖铅笔的小贩衣衫褴褛,顿生怜悯之情,把一元钱丢下来就走了。后来觉得不妥,回身从卖笔人那儿取出一枝铅笔,抱歉地解释自己忘记拿笔了,并且说,你我都是商人,你是卖家,我是买家。一年后的一次商务洽谈会上,一位穿着考究的商人认出了这位企业家,自我介绍说,您可能不记得我了,我就是当年那个卖铅笔的小贩。是您给了我做人的自尊和创业的勇气,如今真的成了一名小有成就的商人。
④人生天地间,原本并无尊卑贵贱之分,因世俗社会的打磨和熏染才变得势利起来。见到比自己地位高的人,要么仰视,要么鄙视;见到比自己地位低的人,要么俯视,要么漠视。这种心态一旦固化,在处理人际关系时,就会自觉不自觉地流露出来。《法门寺》里的贾桂,明武宗让他坐到身边的椅子上说说话,贾桂回答说,奴才站惯了,不想坐。正是因为这种心态作怪,人与人之间要做到平视,往往不那么容易。
⑤在高山大川面前,人们仰视或俯视,这是欣赏视角的需要;在人际关系中,人们要坚持平视,并使之成为习惯,这是维护自己和他人尊严的需要。惟平视才能客观、公平,惟平视才能达观、无私。平视,于己是一种自信,对人是一种尊重。所谓“在人之上,要把别人当人;在人之下,要把自己当人”,这也应当成为做人的一条道德底线。
(摘自香港《大公报》 文/王兆贵)
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地球上的水
①尽管从太空中看过来地球大部分区域被美丽的蓝色海洋所覆盖,但实际上相对来说地球上的水资源并不算多。
②美国地质勘探局勘测结果显示,即使我们将每一片海、每一条河与每一个地下湖的水都聚集起来也只不过形成一个蓝色的小水泡挂在地球的旁边。这个水泡相对地球来说并不太大,直径仅约1384千米。
③地球上的水有98.5%存在于海洋中,还有3.5%存在于大气中的云、水蒸气和河流、湖泊、冰盖、冰谷与所有生物的体内。由此可知,地球表面绝大多数的水都是存在于海洋中的咸水,而为我们人类(当然也包括绝大多数生命体)赖以生存而提供的水却只是剩下的少得可怜的淡水资源。
④总而言之,地球上的水资源是不多的,人类必须对此保持清醒的认识。
New rules and behaviour standards (行为规范) for middle school students have come out. The middle school is going to use a new way to decide who the top students are. The best students won't only have high marks. They will also be kids who don't smoke, drink or dye (染) their hair. The following are some of the new rules.
Tell the truth. Have you ever copied someone else’s work on an exam? Don’t do it again! That’s not something that an honest student should do. If you have played computer games for two hours in your room, don't tell your parents you have done homework.
Do more at school. Good students love animals and care for other people. April is Bird Loving Month in China. Is your school doing anything to celebrate it? You should join! That way, you can learn more about animals and how to protect them. When more people work together, it is more fun for everyone.
Have you fought with your teammates when your basketball team lost? Only working together can make your team stronger. Be friendly to the people you are with. Try to think of others, not only yourself.
Be open to new ideas. Have you ever thought that people could live on the moon? Maybe you'll discover Earth II someday. Don’t look down on new ideas. Everyone's ideas are important. You should welcome them because new ideas make life better for everyone.
Protect yourself. Has someone ever taken money from one of your classmates? Don't let it happen to you. If you have to go home late, you should let your parents know.
Use the Internet carefully. The Internet can be very useful for your studies. But some things on the Internet aren't good for kids, do try to look at Web pages that aren't good for you. You can use the Web for fun or homework. Can't you find any good Web sites for children? Here are some: http://kinds.eastday.com / http://www.chinakids.net.com / http://www.cyenct.com
New rules and behaviour standards (行为规范) for middle school students have come out. The middle school is going to use a new way to decide who the top students are. The best students won't only have high marks. They will also be kids who don't smoke, drink or dye (染) their hair. The following are some of the new rules.
Tell the truth. Have you ever copied someone else’s work on an exam? Don’t do it again! That’s not something that an honest student should do. If you have played computer games for two hours in your room, don't tell your parents you have done homework.
Do more at school. Good students love animals and care for other people. April is Bird Loving Month in China. Is your school doing anything to celebrate it? You should join! That way, you can learn more about animals and how to protect them. When more people work together, it is more fun for everyone.
Have you fought with your teammates when your basketball team lost? Only working together can make your team stronger. Be friendly to the people you are with. Try to think of others, not only yourself.
Be open to new ideas. Have you ever thought that people could live on the moon? Maybe you'll discover Earth II someday. Don’t look down on new ideas. Everyone's ideas are important. You should welcome them because new ideas make life better for everyone.
Protect yourself. Has someone ever taken money from one of your classmates? Don't let it happen to you. If you have to go home late, you should let your parents know.
Use the Internet carefully. The Internet can be very useful for your studies. But some things on the Internet aren't good for kids, do try to look at Web pages that aren't good for you. You can use the Web for fun or homework. Can't you find any good Web sites for children? Here are some: http://kinds.eastday.com / http://www.chinakids.net.com / http://www.cyenct.com
7.填空题- (共4题)
(1)煤被称为“工业的粮食”,它属于________(填“可再生”或“不可再生”)能源。
(2)萤石的主要成分是氟化钙(CaF2)。CaF2中氟元素显________价。
(3)炼铁的原理之一是:高温下焦炭把赤铁矿(主要成分为Fe2O3)中的铁还原出来。其化学方程式为______________
(4)石灰石通过以下转化可得烧碱。写出指定的化学方程式:______________

反应①________________;反应③________________。
(5)市面上用黄铜 (铜锌合金)制成的仿金制品,与黄金饰品的外观极为相似。写出一种区别黄金、仿金饰品的化学方法:______________
a. 氧气 b. 活性炭 c. 干冰 d. 甲烷 e. 碳酸氢钠
(1)能用于人工降雨的是________。
(2)能用于焙制糕点的是________。
(3)能用作气体燃料的是________。
(4)能用于制糖工业中吸附色素的是________。

(1)水电解生成氢气和氧气,说明水是由________元素和________元素组成。
(2)右图是水分子分解示意图,这一化学变化中的最小粒子是________(填标号)。
A 水分子 | B 氢分子 |
C 氧分子 | D 氢原子和氧原子 |
(3)生活中,可用________来区分硬水和软水,通过________可以降低水的硬度。
(4)节约用水,从我做起。请谈谈你在生活中节约用水的一种做法:
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【1】题量占比
简答题:(1道)
计算题:(1道)
流程题:(1道)
科学探究题:(1道)
单选题:(12道)
选择题:(16道)
填空题:(4道)
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【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:4
7星难题:0
8星难题:6
9星难题:8