精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区

(Ⅲ)設.求數列的前項和. 查看更多

 

題目列表(包括答案和解析)

書面表達(滿分25分)
為了創造學校的英語學習氛圍,激發同學們學習英語的興趣,我校將舉行英語演講比賽。請你根據下面內容以學生會名義向全校學生做口頭通知,介紹相關情況。
活動:英語演講比賽
比賽時間:5月22日下午;地點:報告廳
比賽要求:
(1)話題從備選的8個話題中自選
(2)選手每人先進行一段20秒以內的自我介紹,演講時間不超過3分鐘
獎勵辦法:各年級設一、二、三等獎
報名時間:5月15日前
報名地點:學生會辦公室
注意:     1.詞數不少于60.
2.通知的開頭和結尾已為你寫好。
3.選手:contestant
Boys and girls, I have an announcement to make.
_____________________________________________________________________________
That’s all.
Thank you.

查看答案和解析>>

第二節  書面表達(滿分25分)

假如你是張林,剛進入高三學習,需要購買一本有關英語書面表達的書,請根據下列提示,寫信給你在外文書店工作的朋友Jack,請他幫你挑選。

要    求

書的內容要求

1.含寫作技巧:如文章結構,過渡詞使用;

2.有多種寫作題材及其范文;

3.最好有近三年高考的書面表達題。

其它

1.大小同英語課本,厚度不限。

2.最新版本,供2007級高三學生使用

3.把書郵寄到學校。

要求:1.詞數100個左右。

2.不可逐字翻譯,但可適當增加內容,使行文連貫。

3.參考詞匯:過渡詞transitional words  版本edition

注:信的開頭和結尾已為你寫好,不計入總詞數。

Dear Jack,

How are you getting along these days?

I’m in Senior Grade 3 now, and I’m writing to you ask for a favor.                             

                                                                                    

                                                                                 

                                                                                    

Thank you very much, my dear friend. I wish I hadn’t put you to so much trouble.

                                                                   Yours,

                                                                   Zhang Lin

查看答案和解析>>

(本題13分)已知函數

(1)已知一直線經過原點且與曲線相切,求的直線方程;

(2)若關于的方程有兩個不等的實根,求實數的取值范圍。

查看答案和解析>>

閱讀下列應用文及相關信息,并按照要求匹配信息。請在答題卡上將對應題號的相應選項字母涂黑。

下面是一篇有關書籍介紹的應用文,請閱讀下列應用文和相關信息,并按照要求匹配信息。

首先請閱讀下列應用文:

A

I Am a Pencil

Sam Swope's job was teaching writing to third-graders in New York City. His students were from 21 countries, speaking 11 languages, with different backgrounds. But there were a few things they had in common. Family troubles, for one. Money struggles. And poetry. Every single student, with the help of this creative teacher, came forth with awesome writing. Swope leaves the reader with the inspiring conviction (堅信) that deep within each of us lives a poet.

B

Between a Rock and a Hard Place

Aron Ralston, 28, went hiking in a remote Utah canyon without telling anyone. An unexpected catastrophe struck. With enough supplies only for a day, Ralston knew his situation was full of danger. Sure enough, after five days he was in a fight against death. That was when he carried out a courageous plan - using a pocket knife to cut off his trapped arm. His amazing survival story rests at a place among the classics of the genre (體裁).

C

Our Brother's Keeper

Author Jedwin Smith spent 30 years trying to repress (克制) all memories of his brother, Jeff, who was killed in Vietnam. But in Our Brother's Keeper he tells what happens when the Internet brings him into contact with several of his brother's old Marine friends, including the guy who held Jeff in his arms as he died. First via e-mail, and then in person, Smith gets to know these men.

D

The All Americans

With his graduation from West Point, Henry Romanek sailed toward Omaha Beach on the eve of Dday. It was June 1944, and he was about to face the bloodiest battle of his life. Just yesterday, it seemed, he was a standout soldier on the Army team. Now, he was a leader of youngsters in battle, fighting, quite literally, for his country and the future of the free world. In this book, Lars Anderson retraces Romanek's life and that of three other soldiers.

E

Copies in Seconds

With the push of a button, anyone can make copies of almost anything - unlike the old days, when papers had to be rewritten long-hand, carbon-copied out of fussy mimeograph machines (蠟紙油印機). In Copies in Seconds, David Owen showed how a shy engineer named Chester Carlson perfected his xerography machine (靜電復印機) and shopped it around until finally hooking up with the Haloid Corporation. That partnership led to the Xerox copier and changed the face of work forever.

F

State of Grace

Back in the late 1950s and early 1960s, the Lynvets was just a football team in a sandy New York City neighborhood. But to most of its members - the author, Robert Timberg, included - the team was their only experience of a happy family, their only chance to rise above terrible everyday circumstances, their only shot at being heroes. The friendships these men formed sustained (維持) them throughout their lives.

請閱讀以下求書者的信息,然后匹配他們所要尋找的書籍:

1. Tom is looking for a book about the hiking stories to help him in his following outdoor activities.

2. Kate wants to find a book about the stories of the soldiers during World War II.   .

3. Mark wants to research into the history of technological development.

4. Jack is researching into education in a college. He is especially interested in the teaching methods. He wants to find a book which can tell him something about how to teach students from different backgrounds.

5. John wants to find some materials about the soldiers in Vietnam War to carry on his new research.

    求書者                           書籍

1. Tom                  A. I Am a Pencil

2. Kate                  B. Between a Rock and a Hard Place    

3. Mark                   C. Our Brother's Keeper

4.Jack                   D. The All Americans

5. John                   E. Copies in Seconds

                                   F. State of Grace

 

查看答案和解析>>

 高中英語教學中教師常常遇到授課的語言問題:應該只用英語,還是英語、漢語兼用?你校學生會就此對全校學生做了調查。很設你叫李剛,請結合下表調查結果用英語給你的英國筆友Peter 寫一封電子郵件,并發表你自己的觀點。信的開頭和結尾已給出,不計入總詞數。

 

注意:

1.不要逐句翻譯,可適當增加細節,使行文連貫;

2.詞數100左右。

參考詞匯:strengthen 增強

Dear Peter,

    Is everything going well? Recently the Students’ Union of our school has done a survey on whether English classes should be taught in English only or in both English and Chinese. Now, I’m writing to tell you about it.                                                                                                                       

                                                                                           

Looking forward to your reply.

Yours,

Li Gang

 

查看答案和解析>>

1.解析:,故選A。

2.解析:抽取回族學生人數是,故選B。

3.解析:由,得,此時,所以,,故選C。

4.解析:∵,∴,∴,故選C。

5.解析:設公差為,由題意得,,解得,故選C。

6.解析:∵雙曲線的右焦點到一條漸近線的距離等于焦距的,∴,又∵,∴,∴雙曲線的漸近線方程是,故選D.

7.解析:∵為正實數,∴,∴;由均值不等式得恒成立,,故②不恒成立,又因為函數是增函數,∴,故恒成立的不等式是①③④。故選C.

8.解析:∵,∴在區間上恒成立,即在區間上恒成立,∴,故選D。

9.解析:∵

,∴此函數的最小正周期是,故選C。

10.解析:如圖,∵正三角形的邊長為,∴,∴,又∵,∴,故選D。

11.解析:∵在區間上是增函數且,∴其反函數在區間上是增函數,∴,故選A

12.解析:如圖,①當時,圓面被分成2塊,涂色方法有20種;②當時,圓面被分成3塊,涂色方法有60種;

③當時,圓面被分成4塊,涂色方法有120種,所以m的取值范圍是,故選A。

13.解析:將代入結果為,∴時,表示直線右側區域,反之,若表示直線右側區域,則,∴是充分不必要條件。

學科網(Zxxk.Com)14.解析:∵,∴時,,又時,滿足上式,因此,

學科網(Zxxk.Com)15.解析:設正四面體的棱長為,連,取的中點,連,∵的中點,∴,∴或其補角為所成角,∵,∴,∴,又∵,∴,∴所成角的余弦值為

學科網(Zxxk.Com)16.解析:∵,∴,∵點的準線與軸的交點,由向量的加法法則及拋物線的對稱性可知,點為拋物線上關于軸對稱的兩點且做出圖形如右圖,其中為點到準線的距離,四邊形為菱形,∴,∴,∴,∴,∴,∴向量的夾角為

17.(10分)解析:(Ⅰ)由正弦定理得,,…2分

,………4分

(Ⅱ)∵,∴,∴,………………………6分

又∵,∴,∴,………………………8分

。………………………10分

18.解析:(Ⅰ)∵,∴;……………………理3文4分

(Ⅱ)∵三科會考不合格的概率均為,∴學生甲不能拿到高中畢業證的概率;……………………理6文8分

(Ⅲ)∵每科得A,B的概率分別為,∴學生甲被評為三好學生的概率為。……………………12分

19.(12分)解析:(Ⅰ)∵,∴

 ,,……………3分

(Ⅱ)∵,∴

,∴數列自第2項起是公比為的等比數列,………………………6分

,………………………8分

(Ⅲ)∵,∴,………………10分

。………………………12分

20.解析:(Ⅰ)∵,∴,∵底面,∴,∴平面,∴,又∵平面,∴,∴平面,∴。………………………4分

(Ⅱ)∵平面,∴,∴為二面角的平面角,………………………6分

,∴,又∵平面,∴,∴二面角的正切值的大小為。………………………8分

(Ⅲ)過點,交于點,∵平面,∴在平面內的射影,∴與平面所成的角,………………………10分

學科網(Zxxk.Com),∴,又∵,∴與平面所成的角相等,∴與平面所成角的正切值為。………………………12分

解法2:如圖建立空間直角坐標系,(Ⅰ)∵,,∴點的坐標分別是,∴,設,∵平面,∴,∴,取,∴,∴。………………………4分

(Ⅱ)設二面角的大小為,∵平面的法向量是,平面的法向量是,∴,∴,∴二面角的正切值的大小為。………………………8分

(Ⅲ)設與平面所成角的大小為,∵平面的法向量是,∴,∴,∴與平面所成角的正切值為。………………………12分

21.解析:(Ⅰ)設拋物線方程為,將代入方程得

所以拋物線方程為。………………………2分

由題意知橢圓的焦點為

設橢圓的方程為

∵過點,∴,解得,

∴橢圓的方程為。………………………5分

(Ⅱ)設的中點為的方程為:

為直徑的圓交兩點,中點為

,則

  

………………………8分

………………………10分

時,

此時,直線的方程為。………………………12分

22.(12分)解析:(Ⅰ)∵是偶函數,∴

又∵,………………………2分

得,

時,時,時,;∴時,函數

精品一区二区免费在线观看_国产精品久久久久久av福利软件_97成人精品区在线播放_国内成人精品一区
成人在线视频一区二区| 91蜜桃婷婷狠狠久久综合9色| 日韩精品在线一区| 久久国产精品免费| 日韩精品一区二区三区在线播放 | 国产精品三级视频| 成人精品电影在线观看| 国产精品久久久久aaaa樱花 | 欧美亚洲日本国产| 亚洲bt欧美bt精品777| 在线不卡中文字幕| 精品制服美女久久| 中国av一区二区三区| 一本色道**综合亚洲精品蜜桃冫| 一区二区三区毛片| 欧美一区二区福利视频| 国产一区激情在线| 国产精品国产三级国产三级人妇| 91香蕉视频污在线| 视频一区二区中文字幕| 精品国产123| av在线不卡网| 亚洲午夜私人影院| 精品精品国产高清一毛片一天堂| 国产suv精品一区二区三区| 亚洲男人电影天堂| 欧美日韩国产另类一区| 精品一区二区在线看| 国产免费观看久久| 欧美影院一区二区| 寂寞少妇一区二区三区| 国产精品超碰97尤物18| 欧美日韩激情一区| 国产乱码精品一区二区三 | 亚洲日本护士毛茸茸| 欧美丰满少妇xxxxx高潮对白| 韩国一区二区三区| 亚洲欧美成aⅴ人在线观看| 7777精品伊人久久久大香线蕉| 国产精品一级黄| 一区二区三区电影在线播| 日韩精品一区二区在线| 91一区二区在线| 免费久久99精品国产| 国产精品久久久久久久久免费相片| 欧美女孩性生活视频| 国产成人啪免费观看软件| 亚洲一二三四区| 久久亚洲欧美国产精品乐播| 色综合一区二区| 久草精品在线观看| 一区二区视频免费在线观看| 精品国产伦一区二区三区观看体验 | 色噜噜偷拍精品综合在线| 久久国产福利国产秒拍| 亚洲色图一区二区三区| 精品免费日韩av| 色狠狠色狠狠综合| 国产综合久久久久影院| 一级做a爱片久久| 久久九九国产精品| 欧美精品乱人伦久久久久久| 不卡av在线免费观看| 蜜桃精品在线观看| 亚洲欧美日韩综合aⅴ视频| 精品对白一区国产伦| 欧美日韩日本视频| 不卡的电视剧免费网站有什么| 美女高潮久久久| 亚洲综合色区另类av| 国产午夜精品理论片a级大结局 | 精品国产乱子伦一区| 欧美久久一区二区| 91视频在线看| 国产精品538一区二区在线| 日本三级亚洲精品| 亚洲精品网站在线观看| 国产欧美日韩卡一| 日韩精品一区二| 欧美人伦禁忌dvd放荡欲情| 色综合天天性综合| 国产经典欧美精品| 久久99精品国产.久久久久久| 亚洲成人激情综合网| 亚洲色图第一区| 欧美激情中文字幕| 欧美精品一区二区不卡| 91精品婷婷国产综合久久性色| 色综合久久综合网97色综合| 丰满少妇久久久久久久| 韩国一区二区三区| 久久国产精品第一页| 日韩成人dvd| 亚洲电影视频在线| 一区二区三区在线观看动漫| 中文字幕亚洲在| 欧美韩国日本一区| 久久久久国产成人精品亚洲午夜 | 国产精品激情偷乱一区二区∴| 亚洲精品在线观看网站| 日韩一区二区三区电影在线观看| 欧美日韩精品一区二区在线播放| 色妹子一区二区| 一本一本大道香蕉久在线精品| 成人精品鲁一区一区二区| 国产大陆亚洲精品国产| 国产伦精品一区二区三区视频青涩 | 亚洲成人1区2区| 亚洲一区二区精品久久av| 亚洲精品五月天| 亚洲码国产岛国毛片在线| 中文字幕中文字幕一区二区| 中文字幕免费不卡| 国产精品天干天干在观线| 国产欧美精品区一区二区三区| 久久亚洲综合色一区二区三区| 精品国内二区三区| 26uuu色噜噜精品一区二区| 久久综合九色欧美综合狠狠| 精品国产乱码久久久久久久 | 国产精品午夜久久| 国产精品伦理在线| ...中文天堂在线一区| 亚洲人成网站影音先锋播放| 亚洲欧美日韩久久精品| 亚洲精品免费看| 亚洲国产日韩精品| 日日夜夜精品视频天天综合网| 视频一区视频二区中文字幕| 美女网站色91| 国产制服丝袜一区| 国产白丝精品91爽爽久久| www.成人在线| 91黄视频在线观看| 欧美日韩国产在线播放网站| 欧美一区二区视频网站| 日韩精品一区二区三区在线| 久久亚洲免费视频| 国产精品女主播av| 一区二区三区波多野结衣在线观看| 亚洲在线成人精品| 人人爽香蕉精品| 国产尤物一区二区| 不卡一区在线观看| 欧美日韩一区精品| 欧美不卡激情三级在线观看| 国产日韩欧美高清| 亚洲视频在线一区| 午夜影院在线观看欧美| 激情综合亚洲精品| 不卡的电影网站| 欧美日韩国产一区二区三区地区| 日韩一区二区免费在线观看| 久久久www成人免费无遮挡大片| 国产精品理伦片| 亚洲成人黄色影院| 韩国一区二区视频| 一本到高清视频免费精品| 在线不卡的av| 国产欧美一区二区精品仙草咪| 亚洲欧美色图小说| 麻豆freexxxx性91精品| 成人在线视频一区| 欧美精品一二三四| 国产色一区二区| 亚洲一区二区三区影院| 久久不见久久见中文字幕免费| 成人免费毛片a| 欧美精品自拍偷拍| 中文乱码免费一区二区 | 亚洲国产美女搞黄色| 久久国产精品99久久人人澡| caoporn国产精品| 91精品久久久久久蜜臀| 日本一区二区电影| 首页欧美精品中文字幕| 国产99久久久久| 欧美日韩激情一区二区| 中文字幕免费观看一区| 天堂一区二区在线免费观看| 国产iv一区二区三区| 91精品国产综合久久精品| 国产精品色哟哟| 美女视频黄频大全不卡视频在线播放| 国产91色综合久久免费分享| 欧美夫妻性生活| 中文字幕一区二区在线播放| 免费成人深夜小野草| 99久久久无码国产精品| 日韩免费成人网| 悠悠色在线精品| 国产精品亚洲一区二区三区在线| 欧美亚洲尤物久久| 国产精品少妇自拍| 久久国产精品色婷婷| 欧美特级限制片免费在线观看| 久久久久国产免费免费| 奇米影视7777精品一区二区| 91免费版在线| 欧美激情一区三区|