計(jì)算：(4b－3ab)＋(－5b＋3ab)

朱禧看到山石中有貝殼，認(rèn)為“此石即舊日之土，螺蚌即水中之物，下者卻變而為高，柔者卻變而為剛�！边@體現(xiàn)了

A．三綱五常

B．發(fā)明本心

C．格物致知

D．經(jīng)世致用

（8分）供電局某工程隊(duì)在冬天架設(shè)電線，如圖所示，設(shè)兩電線桿間距離為L，銅導(dǎo)線總質(zhì)量為M，電線架好后，在兩桿正中部位電線下墜的距離為h，電線在桿上固定處的切線方向與豎直方向的夾角為θ，求：

（1）兩電線桿處的電線彈力．
（2）當(dāng)?shù)较奶鞎r(shí)，兩電線桿處的電線彈力與冬天相比是變大了，還是變小了？為什么？（提示：導(dǎo)線上每處的彈力均沿切線方向）

Jiuzhaigou is a very beautiful place. It is in the Aba Tibetan and Qiang Autonomous Region in Sichuan Province. Jiuzhaigou is a valley. It is more than 40 kilometers long. The green and golden trees, the lofty and multi-shaped mountains and the clear and colorful waters form the unique beauty of Jiuzhaogou. The water of Jiuzhaigou is the soul of the beauty. There are more than 100 lakes of different shapes in the valley. These lakes have wonderful colors. They are called “haizi”, which means son of the sea. It is these beautiful lakes that make Jiuzhaigou a fantastic place. Between the forests and the lakes, there are nine Tibetan villages. The name Jiuzhaigou means Nine Village Valley.
Jiuzhaigou was discovered because of a panda rescue program. The pandas were once endangered because the bamboo there was blooming. When people came to rescue the pandas, they were surprised by the beauty of Jiuzhaigou. After that, Jiuzhaigou became a protected scenic area.
In China, there is a saying which goes like this: No mountain is worth seeing after you have seen Mount Huang and no other body of water will attract you after you have visited Jiuzhaigou. The beauty of Jiuzhaigou cannot be described with mere words. The best way to enjoy this fairyland is to go there. See you in Jiuzhaigou.
【小題1】 What is the best title for the passage? （no more than 3 words）
_____________________________________________________________
【小題2】 How long is the Jiuzhaigou Valley? （no more than 7 words）
_____________________________________________________________
【小題3】 How was the Jiuzhaigou Valley discovered? （no more than 9 words）
【小題4】 What does the name Jiuzhaigou mean? （no more than 7 words）
_____________________________________________________________

Jiuzhaigou is a very beautiful place. It is in the Aba Tibetan and Qiang Autonomous Region in Sichuan Province. Jiuzhaigou is a valley. It is more than 40 kilometers long. The green and golden trees, the lofty and multi-shaped mountains and the clear and colorful waters form the unique beauty of Jiuzhaogou. The water of Jiuzhaigou is the soul of the beauty. There are more than 100 lakes of different shapes in the valley. These lakes have wonderful colors. They are called “haizi”, which means son of the sea. It is these beautiful lakes that make Jiuzhaigou a fantastic place. Between the forests and the lakes, there are nine Tibetan villages. The name Jiuzhaigou means Nine Village Valley.
Jiuzhaigou was discovered because of a panda rescue program. The pandas were once endangered because the bamboo there was blooming. When people came to rescue the pandas, they were surprised by the beauty of Jiuzhaigou. After that, Jiuzhaigou became a protected scenic area.
In China, there is a saying which goes like this: No mountain is worth seeing after you have seen Mount Huang and no other body of water will attract you after you have visited Jiuzhaigou. The beauty of Jiuzhaigou cannot be described with mere words. The best way to enjoy this fairyland is to go there. See you in Jiuzhaigou.
【小題1】 What is the best title for the passage? （no more than 3 words）
_____________________________________________________________
【小題2】 How long is the Jiuzhaigou Valley? （no more than 7 words）
_____________________________________________________________
【小題3】 How was the Jiuzhaigou Valley discovered? （no more than 9 words）
【小題4】 What does the name Jiuzhaigou mean? （no more than 7 words）
_____________________________________________________________

（8分）電浮選凝聚法是工業(yè)上采用的一種處理污水方法，下圖是電解污水實(shí)驗(yàn)裝置示意圖。接通直流電源后一段時(shí)間，在A電極附近有深色沉淀物沉積下來(lái)，在B電極附近有氣泡產(chǎn)生。氣泡可將污水中的懸浮物帶到水面形成浮渣層，積累到一定厚度時(shí)刮去浮渣層，即起到了浮選凈化的作用。

試根據(jù)以上實(shí)驗(yàn)現(xiàn)象以及圖示回答下列問題：
（1）電解池的電極A、B極性分別為        、      （填 “陰極”、“陽(yáng)極” ）
（2）實(shí)驗(yàn)時(shí)若污水中離子濃度較小，導(dǎo)電能力較差，產(chǎn)生氣泡速率緩慢，無(wú)法使懸浮物形成浮渣。此時(shí)，應(yīng)向污水中加入適量的           。
a．H₂SO₄     b．BaSO₄     c．Na₂SO₄     d．NaOH     e．CH₃CH₂OH
（3）電解池陽(yáng)極的電極反應(yīng)分別是①              ；②4OH^－- 4 e^－＝ 2H₂O ＋Ｏ₂↑。
（4）電極反應(yīng)①和②的生成物反應(yīng)得到Fe(OH)₃沉淀的離子方程式是                   。

（8分）電浮選凝聚法是工業(yè)上采用的一種處理污水方法，下圖是電解污水實(shí)驗(yàn)裝置示意圖。接通直流電源后一段時(shí)間，在A電極附近有深色沉淀物沉積下來(lái)，在B電極附近有氣泡產(chǎn)生。氣泡可將污水中的懸浮物帶到水面形成浮渣層，積累到一定厚度時(shí)刮去浮渣層，即起到了浮選凈化的作用。

試根據(jù)以上實(shí)驗(yàn)現(xiàn)象以及圖示回答下列問題：
（1）電解池的電極A、B極性分別為        、      （填 “陰極”、“陽(yáng)極” ）
（2）實(shí)驗(yàn)時(shí)若污水中離子濃度較小，導(dǎo)電能力較差，產(chǎn)生氣泡速率緩慢，無(wú)法使懸浮物形成浮渣。此時(shí)，應(yīng)向污水中加入適量的           。
a．H₂SO₄     b．BaSO₄     c．Na₂SO₄     d．NaOH     e．CH₃CH₂OH
（3）電解池陽(yáng)極的電極反應(yīng)分別是①              ；②4OH^－- 4 e^－＝ 2H₂O ＋Ｏ₂↑。
（4）電極反應(yīng)①和②的生成物反應(yīng)得到Fe(OH)₃沉淀的離子方程式是                   。

America is a mobile society. Friendships between Americans can be close and real, yet disappear soon. They don ’t feel hurt. If the same two people meet again, even years later, they pick up the friendship .This can be quite difficult for us Chinese to understand .Friendships between us develop more slowly but may become lifelong feelings, extending（延伸）deeply into both families.
There is another difficult point for us to understand . Although Americans treat friends warmly in their personal everyday lives, they don’t show their politeness to them if it requires a great deal of time. But in China ,we are usually generous with our time. We, as hosts, will appear at an airport even in the middle of the night to meet a friend. We may take days off from our work to act as guides to our friends .It is opposite in America , Americans can not manage the time to do a great deal with a visitor outside their daily plans. They will probably expect the visitors to get themselves from the airport to the hotels. And they expect the visitors will phone them from there. Once the visitors arrive at their homes , the welcome will be full , warm and real. For Americans , it is often considered more friendly to invite a friend to their homes than to restaurants, except for business matters. Americans are ready to receive us foreigners at their homes, share their holidays, and their home life. So accept their hospitality（好客）at home and enjoy your visit in America!
【小題1】The underlined phrase “pick up” in Paragraph 1 may mean “_______”.

A．keep out

B．give up

C．pay no attention to

D．continue

【小題2】Which of the following is the typical （典型的）way of  American hospitality?

A．Treating friends at home.

B．Taking days off to be with friends.

C．Meeting friends at the airport at midnight.

D．Sharing everything they have.

【小題3】Which of the following statements is True according to the passage?

A．Americans are always generous with their time.

B．Americans don’t feel hurt if their friendships disappear soon.

C．Chinese friendships develop more slowly but will never disappear.

D．Chinese friendships are more sincere than American friendships.

德國(guó)法學(xué)家耶林認(rèn)為：“羅馬曾三次征服了世界，第一次是武力，第二次是宗教，第三次則是以法律�！惫糯�羅馬之所以能以法律征服世界，是因?yàn)榱_馬法中流傳后世的原則是

A．法律面前人人平等，公正至上	B．以眼還眼，以牙還牙
C．禮不下庶人，刑不上大夫	D．婦女不得參加任何事務(wù)

德國(guó)法學(xué)家耶林認(rèn)為：“羅馬曾三次征服了世界，第一次是武力，第二次是宗教，第三次則是以法律�！惫糯�羅馬之所以能以法律征服世界，是因?yàn)榱_馬法中流傳后世的原則是

A．法律面前人人平等，公正至上	B．以眼還眼，以牙還牙
C．禮不下庶人，刑不上大夫	D．婦女不得參加任何事務(wù)