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b x有極值,且導函數(shù)? ?fx, 的極值點是 ??fx的零點。(極值點是指函數(shù)取極值時對應的自變量的值) ( 1) 求 b關于 a的函數(shù)關系式,并寫出定義域; ( 2) 證明 : b178。3a。 ( 3) 若 ??fx, ? ?fx, 這兩個函數(shù)的所有極值之和不小于 72,求 a的取值范圍。 2017 年普通高等學校招生全國統(tǒng)一考試(江蘇卷) 數(shù)學 II(附加題) 注意事項 考生在答題前請認真閱讀本注意事項及各題答題要求 1. 本試卷共 2 頁,均為非選擇題(第 21 題 ~ 第 23 題)。本卷滿分為 40分,考試時間為 30分鐘。考試結束后,請將本試卷和答題卡一并交回。 2. 答題前,請 務必將自己的姓名、準考證號用 毫米黑色墨水的簽字筆填寫在試卷及答題卡的規(guī)定位置。 、準考證號與本人是否相符。 試題 ,必須用 毫米黑色墨水的簽字筆在答題卡上的指定位置作答,在其他位置作答一律無效。 ,須用 2B 鉛筆繪、寫清楚,線條、符號等須加黑、加粗 21.【選做題】本題包括 A、 B、 C、 D四小題, 請選定其中兩小題 . . . . . . . . , 并在相應的答題區(qū)域內 . . . . . . . . . .作答 . . 。若多做,則按作答的前兩小題評分。解答時應寫出文字說明、證明過程或演算步驟。 A.【選修 41: 幾何證明選講】(本小題滿分 10 分) 如圖, AB 為半圓 O 的直徑,直線 PC 切半圓 O 于點 C, AP⊥ PC, P 為垂足。 求證:( 1)∠ PAC=∠ CAB。 ( 2) AC2 =AP AB。 B.[選修 42:矩陣與變換 ](本小題滿分 10 分) 已知矩陣 A= , B= . (1) 求 AB。 ( 2) 若曲線 C1。 22y =182x ? 在矩陣 AB 對應的變換作用下得到另一曲線 C2 , 求 C2的方程 . C.[選修 44:坐標系與參數(shù)方程 ](本小題滿分 10 分) 在平 面坐標系中 xOy 中,已知直線 l 的參考方程為 x82tty? ? ? ??? ???( t 為參數(shù)) ,曲線 C 的參數(shù)方程為 2x 2s ,2 2sy? ???? ??( s 為參數(shù))。設 p 為曲線 C 上的動點,求點 P 到直線 l 的距離的最小值 D.[選修 45:不等式選講](本小題滿分 10 分) 已知 a,b,c,d 為實數(shù),且 a2+b2=4,c2+d2=16,證明 ac+bd? 8. 2x 2s ,2 2sy? ???? ?? 22.(本小題滿分 10 分) 如圖,在平行六面體 ABCDA1B1C1D1中, AA1⊥平面 ABCD,且 AB=AD=2, AA1= 3 ,∠BAD=120186。. ( 1)求異面直線 A1B 與 AC1所成角的余弦值; ( 2)求二面角 BA1DA 的正弦值。 23. (本小題滿分 10) 已知一個口袋有 m 個白球, n 個黑球( m,n? 2N ,n? 2) ,這些球除顏色外全部相同?,F(xiàn)將口袋中的球隨機的逐個取出,并放入如圖所示的編號為 1,2,3,??, m+n 的抽屜內,其中第 k 次取球放入編號為 k 的抽屜( k=1,2,3,??, m+n) . ( 1)試求編號為 2 的抽屜內放的是黑球的概率 p。 ( 2)隨機變量 x 表示最后一個取出的黑球所在抽屜編號的倒數(shù), E(x)是 x 的數(shù)學期望,證明 2017 年 普通高等學校招生全國統(tǒng)一考試(江蘇卷) 英語 注意事項 : ,先將自己的姓名、準考證號填寫在試題卷和答題卡上,并將準考證號條形碼粘貼在答題卡上的指定位置。用 2B 鉛筆將答 題卡上試卷類型 A后的方框涂黑。 :每小題選出答案后,用 2B 鉛筆把答題卡上對應題目的答案標號涂黑,寫在試題卷、草稿紙和答題卡上的非答題區(qū)域均無效。 :用簽字筆直接答在答題卡上對應的答題區(qū)域內。寫在試題卷、草稿紙和答題卡上的非答題區(qū)域均無效。 ,請將本試題卷和答題卡一并上交。 第 Ⅰ 卷 第一部分聽力(共兩節(jié),滿分 20 分) 做題時,現(xiàn)將答案標在試卷上,錄音內容結束后,你將有兩分鐘的時間將試卷上的答案轉涂到答題卡上。 第一節(jié)(共 5 小題;每小題 1 分, 滿分 5 分) 聽下面 5 段對話,每段對話后有一個小題。從題中所給的 A、 B、 C 三個選項中選出最佳選項,并標在試卷的相應位置。聽完每段對話后,你都有 10 秒鐘的時 學 科 *網 間來回答有關小題和閱讀下一小題。每段對話僅讀一遍。 does the woman think of the movie? A. It39。s amusing B. It39。s exciting C. It39。s disappointing 2. How will Susan spend most of her time in France? A. Traveling around. B. Studying at a school. C. Looking after her aunt. 3. What are the speakers talking about? A. Going out. B. Ordering drinks. C. Preparing for a party. 4. Where are the speakers? A. In a classroom. B. In a library. C. In a bookstore. 5. What is the man going to do? A. Go on Inter B. Make a phone call. C. Take a train trip. 第二節(jié)(共 15 小題;每小題 1 分,滿分 15 分) 聽下面 5段對話或獨白。每段對話或獨白后有幾個小題,從題中所給的 A、 B、 C三個選項中選出最佳選項。聽每段對話或獨白前,你將有時間閱讀各個小題,每小題秒鐘;聽完后,各小題將給出 5 秒鐘的作答時間。每段對話或獨白讀兩遍。 聽第 6 段材料,回答第 7 題。 6. What is the woman looking for? A. An information office. police station shoe repair shop. is the Town Guide according to the man? brochure. newspaper. map. 聽第 7 段材料,回答第 9 題。 8. What does the man say about the restaurant? A. It39。s the biggest one around. B. Itoffers many tasty dishes. C. It39。s famous for its seafood. 9. What will the woman probably order? A. Fried fish B. Roast chicken. C. Beef steak. 聽第 8 段材料,回答第 10 至 12 題。 10. Where will Mr. White be at 11 o39。clock? A. At the office B. At the airport. C. At the restaurant. will probably do at one in the afternoon? A. Receive a guest. B. Have a meeting. C. Read a report. Miss Wilson see ? A. At lunch time. B. Late in the afternoon. C. The next morning. 聽第 9 段材料,回答第 13 至 16 題。 is Bill going to Germany? A. To work on a project. B. To study German. C. To start a new pany. did the woman dislike about Germany? A. The weather. B. The food. C. The schools. does Bill hope to do about his family? A. Bring them to Germany. B. Leave them in England. C. Visit them in a few months. is the probable relationship between the speakers? A. Fellowtravelers. B. Colleagues. C. Classmates. 聽第 10 段材料,回答第 17 至 20 題。 did it rain last time in Juarez? A. Three days ago. B. A month ago. C. A year ago. season is it now in Juarez? A. Spring. B. Summer C. Autumn. are the elderly advised to do? A. Take a walk in afternoon. B. Keep their homes cool. C. Drink plenty of water. is the speaker doing? A. Hosting a radio program. B. Conducting a seminar. C. Forecasting the weather. 第二部分:英語知識運用(共兩節(jié),滿分 35 分) 第一節(jié):單項填空(共 15 小題;每小題 1 分,滿分 15 分) 請閱讀下面各題,從題中所給的 A、 B、 C、 D四個選項中,選出最佳選項,并在答題卡上將該項涂黑。 例: It is generally considered unwise to give a child _________ he or she wants. 答案是 B。 21. Many Chinese brands, ______ their reputations over centuries, are facing new challenges from the modern market. A. having developed B. being developed C. developed D. developing for the support of the teachers, the student could not overe her difficulty. A. It were B. Were it C. It was D. Was it 23. Located ______the Belt meets the Road, Jiangsu will contribute more to the Belt and Road construction. A. why B. when C. which D. where 24. The publication of Great Expectations, which _____both widely reviewed and highly praised, strengthened Dickens, status as a leading novelist. A. is B. are C. was D. were 25. Working with the medical team in Africa has _________the best in her as a doctor. A. held out B. brought out C. picked out D. given out 26. We choose this hotel because the price for a night here is down to $20,half of _____it used to charge. A. that B. which C. what D. how 27. He hurried home, never once looking back to see if he_________. A. was being followed B. was following C. had been followed D. followed 28. In 1963 the UN set up the World Food Programme, one of _____ purpo