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如图1,已知直线y=x+3x轴交于点A,与y轴交于点B,将直线在x轴下方的部分沿x轴翻折,得到一个新函数的图象(图中的“V形折线).

1)类比研究函数图象的方法,请列举新函数的两条性质,并求新函数的解析式;

2)如图2,双曲线y=与新函数的图象交于点C1a),点D是线段AC上一动点(不包括端点),过点Dx轴的平行线,与新函数图象交于另一点E,与双曲线交于点P

试求△PAD的面积的最大值;

探索:在点D运动的过程中,四边形PAEC能否为平行四边形?若能,求出此时点D的坐标;若不能,请说明理由.

南南同学看到好想你红枣袋中装有一袋防腐剂,品名为“504双吸剂,其标签如下图所示.南南和北北对这包久置的“504双吸剂固体样品很好奇,设计如下实验进行探究.

【提出问题】久置固体的成分是什么?

【查阅资料】铁与氯化铁溶液在常温下发生反应生成氯化亚铁.

【作出猜想】久置固体中可能含有FeFe2O3CaOCaOH2CaCO3

【实验探究】南南同学的方案:

实验操作

实验现象

实验结论

取少量固体放于试管中,滴加足量的 稀盐酸 

固体逐渐消失,有无色气体产生,得到浅绿色溶液.

固体中一定含有 Fe ,一定不含Fe2O3

北北同学认为南南同学的实验并不能得出一定不含Fe2O3的结论,理由是 ,并设计如下实验方案继续验证.

1)步骤样品用磁铁吸引前需经过研碎,其中研碎的目的是增大接触面积,使反应充分.

2)步骤中固体溶解时放出大量热,由此可以判断固体一定含有  .写出该过程中的化学方程式  

3)步骤中反应的化学方程式是  

北北同学对滤渣B又进行探究.

实验操作

实验现象

实验结论

取滤渣B于试管中,加入适量  

生成的气体通入 

  该溶液变浑浊.

固体中一定含有CaCO3Fe2O3

【实验结论】综合上述实验及所给数据,该久置固体中一定含有的物质是FeFe2O3CaOCaCO3

下列说法正确的是( 

A是同类项          B是同类项 

C是同类项      D是同类项

解方程:x2+6x1=0

在灾难事故死亡的人中,立即死亡者不到1/3,而大部分的死亡者属于丧失生命机会的人。据此回答下列问题。

(1)判断下面在灾害发生时的做法是否正确,并说明判断理由。

(2)结合下图说明地震后被埋压时如何进行自救?

—What _______ your father _______ doing ? ( )
—He _______ reading.
A.does; like; like B.does; likes; likes C.does; like; likes

4名受试者分别口服100g葡萄糖后,在180min内血糖含量的变化曲线如图所示.据图分析正确的是(  )

 

A

a代表高胰岛素血糖症患者的血糖含量变化

 

B

4条曲线在前30 min内血糖升高与肠道吸收有关

 

C

b120 min后下降的主要原因是葡萄糖转化为糖元及非糖物质

 

D

cd代表正常人的血糖含量变化

下列仪器利用红外线来工作的是                            

A.验钞机      B.夜视仪        CB         D.三棱镜

1

、由曲线,直线轴所围成的图形的面积为

A              B4                C              D6

学习《政治生活》“公民的政治权利和义务”时,有同学搜索到以下素材:

①某中学生写信给市政府就网吧治理工作提出意见

②重庆市民协助公安人员抓捕黑社会成员

③深圳市民就2011世界大学生运动会向市政府建言献策

④广西一中学生发现某门户网所展示的中国地图上标志的中国领土不完整,当即向该网站的管理者发出电子邮件,指出其错误,要求其更正。

若按权利和义务对以上素材进行分类,正确的是

A.①②为一类,③④为一类             B.①②③为一类,④为一类  

C.①③为一类,②④为一类             D.①④为一类,②③为一类

17.毛泽东诗词反映了他一生的心路历程,也是中国民主革命与社会主义建设的历史见证。“军叫工农革命 旗号镰刀斧头 匡庐一带不停留 要向潇湘直进”是哪一时期的作品?

A.五四运动时期    B.国民革命时期    C.国共对峙时期    D.抗日战争时期

Almost all cultures celebrate the end of one year and the beginning of another in some way.Different cultures celebrate the beginning of a new year in different ways, and at different times on the calendar.

Chinese New Year is an important traditional Chinese holiday celebrated at the turn of the Chinese calendar. It is also traditional for every family to thoroughly clean the house, in order to sweep away any ill-fortune and to make way for good incoming luck. Windows and doors will be decorated with red color paper-cuts and couplets with popular themes of “good fortune”or “happiness”, “wealth”, and “longevity”. Other activities include lighting firecrackers and giving money in red paper envelopes.

In Western countries, people usually celebrate New Year at midnight on December 31st or January 1st. People may go to parties, sometimes dressed in formalclothes like tuxedos and evening gowns, and they may drink champagne(香槟)at midnight. During the first minutes of the New Year, people cheer and wish each other happiness for the year ahead. But some cultures prefer to celebrate the New Year by waking up early to watch the sun rise.

It is also a common Western custom to make a New Year’s promise, called a resolution. New Year’s resolutions usually include promises to try something new or change a bad habit in the New Year.

Many cultures also do special things to get rid ofbad luck at the beginning of a new year. For example, in Ecuador, families make a big doll from old clothes. The doll is filled with old newspapers and firecrackers. At midnight, these dolls are burned to show the bad things from the past year are gone and the New Year can start afresh. Other common traditions to keep away bad luck in a New Year include throwing things into rivers or the ocean, or saying special things on the first day of the New Year.

Other New Year traditions are followed to bring good luck in the New Year. One widespread Spanish tradition for good luck is to eat grapes on New Year’s Day. The more grapes a person eats, the more good luck the person will have in the new coming year. In France, people eat pancakes for good luck at New Year. In the United States, some people eat black-eyed peas for good luck—but to get good luck for a whole year you have to eat 365 of them!

1. The passage is mainly about_____.

Athe meaning of Happy New Year!

Bseveral different New Year traditions

Ctraditional activities for the New Year

Dinteresting traditions on New Year’s Day

2. We can learn from the passage that_____.

Asome cultures celebrate New Year in the morning

B4 cultures do special things to celebrate New Year

Cpeople in Ecuador go to parties on December 31stor January 1st

Dthe Western people celebrate New Year only on New Year’s Day

3. To have a happy new year,_____.

Afriendssing to each other in special ways

Bfamilies make big dolls filled with new clothes

Csome people get up early to watch the sunrise

DEuropeans eat 365 grapes on New Year’s Day

4. When eating black-eyed peas on New Year’s Day, people think_____.

Aone pea brings one day of good luck

Bblack-eyed peas are the best medicine

Cthe peas are very black and taste bad

Dthe peas are helpful to count numbers

材料一 “千里长河一旦开,亡隋波浪九天来。锦帆未落干戈起,惆怅龙舟更不回。”   

——胡曾

材料二 “尽道隋亡为此河,至今千里赖通波。若无水殿龙舟事,共禹论功不较多。”   

——皮日休《汴河怀古》

请回答:

1)简要说明胡曾对隋朝开凿大运河的看法。

2)说一说皮日休对隋朝开凿大运河的评价。

3)你同意哪一观点?为什么?

3下列选项,填入划横线地方最恰当的一句是(      

德国人酷爱阅读,70%的德国人定期买书,1/3的人几乎每天读书。而30岁以下的年轻人读书热情最高,50%的孩子表示喜欢读书。对于他们来说,书就像啤酒一样让人喜爱,因此图书成了人们最喜欢的礼品。每个德国家庭平均藏书近300册,人均100多册。他们认为,           。德国人的读书兴趣是从一出生就开始培养,很多孩子人生的第一个玩具就是书籍。

A.一个家庭没有书籍,好像一个国家没有信仰

B.一个人不喜欢读书,一定精神空虚

C.一个家庭没有书籍,等于一间房子没有窗户

D.一个人不喜欢读书,必然走向堕落

The Changjiang River is _________in the world.

         A. a longest river                          B. the longest river

         C. one of the longest river             D. one of the longest rivers

如果函数的图像关于点中心对称,那么    的最小值为( 

A.            B.           C.            D.     

硝酸钾的溶解度随温度升高而增大。如图是有关硝酸钾溶液的实验操作及变化情况。下列说法正确的是

A操作I一定是降温                                    B操作I一定是加溶质

C的溶质质量一定相等                      D的溶质质量分数一定相等

下列不符合伴X染色体隐性遗传病的叙述是                         (  )

A.患病家系中不一定代代有患者

B.男性患病率高于女性

C.女性携带者的致病基因来自父亲,男性患者的致病基因来自母亲

D.如果一个家庭生有一个伴X染色体隐性遗传病的女儿,则该家庭的双亲

中至少有一个是患者(不考虑突变)

属于发展中国家的是

A.印度                      B.英国                       C.美国                      D.日本

如图,在正方形ABCD中,AB=9,点ECD边上,且DE=2CE,点P是对角线AC上的一个动点,则PE+PD的最小值是(  )

A                   B                    C9                           D

教材章节知识点
年级分类