第一篇：unit8培優專項訓練
培優專項訓練八
Unit 8 主題閱讀
閱讀理解
A
Zhao Hua is a student from a university. He has led a group of university student volunteers since last year. They help children at a primary school with their studies and daily lives.
“ When I was a small child,” Zhao said, “ I knew March 5th was a day for people to learn from Lei Feng and help others, but I didn?t know the real meaning of the spirit of Lei Feng. Now when I see the smiling faces of the kids I have helped, I deeply understand Lei Feng. Helping others makes me happy.”Lei Feng(1940—1962)is one of the best-known soldiers in Chinese history. He lost his parents when he was very young. His neighbors brought him up. He died in an accident at the age of 22. He did manymoney to the parents of another soldier, and bought a ticket for a woman he didn?t know without telling her his name.
On March 5th,1963, Chairman Mao called on people to “ Learn from Lei Feng” and made the day“Lei Feng Day”.
Today almost 50 years has passed since Lei Feng?s death. Some people say that the spirit of Lei Feng is out. There have been many reports about the coldness (冷漠) of people towards strangers. This has made many Chinese people think deeply about themselves.
Many people think we need to promote (提倡) that spirit again. The important thing is that we must be ready to help others and make it a habit. 1. Which day is “Lei Feng Day”?
A. May 3 rd.B. May 5 th.C. March 3 rd.D. March 5 th. 2. Who brought Lei Feng up?
A. His parents.B. Chairman Mao.C. His neighbors.D. Soldiers.
3. The underlined phrase “good deeds” means _________ in Chinese.
A.好人B.好事C. 好夢D. 好主意
4. Which of the following is NOT TRUE according to the passage?
A. Lei Feng gave his money to another soldier?s
parents.
B. Lei Feng bought a ticket for a woman and he
told his name to her.
C. Lei Feng always helped others. D. We should learn from Lei Feng.
5. What?s the best title (標題) of this passage ?A. Lei Feng?s SpiritB. Lei Feng?s death
C. Lei Feng?s good neighborsD. University Student Volunteers
B
Like many people, I have no clear idea about heroes. At some point, we all wonder if we need a hero and what a hero really is.
Although there are a lot of differences in cultures, heroes around the world generally share a number of characteristics (特點) which give us courage and make us want to learn from them.
A hero does something worth talking about. A hero has a special story to tell and people think highly of it. But a hero is not just the person with great fame (聲譽) .
A hero has powers (力量) larger than himself. Some people want to live like a hero, and they have to experience life with a new and further meaning. A sure test for would-be heroes is what or whom they serve. What do they want to live and die for? If the answer suggests they serve only their own fame, they may be famous persons but not heroes.
the power to move people. He creates new possibilities. Without Gandhi, India might still be part of Britain. Without Martin Luther King, Jr., Americans might take different buses, eat in different restaurants, go for walks in different parks, and shop in different stores because of the different colours of their skin.There might be changes in society without a hero, but the speed of change would be rather slow. Thanks to heroes in history, they make the society develop so rapidly.
1. According to this passage, a hero is a person who always ________.
A. gives us courage
B. thinks highly of othersC. shares great fame
D. stands on the mountaintop
2. If you want to live like a hero, you should _______. A. experience a new and meaningful lifeB. listen to something worth talking aboutC. serve your own fame and try to be famous D. know where and how you want to live and die 3. The underlined word “vision” in the passage means “__________”.
A. 風景B. 想象C. 遠見D. 形象
4. Black people in America used to __________ before Martin Luther King, Jr..
A. shop at the white?s storesB. drive buses with the whiteC. take walks in the white?s parksD. eat in restaurants without the white5. What can we learn from the passage?
A. We don?t need heroes anymore at some point now.
B. Heroes are all the same though different in cultures.
C. People get powers from heroes to move to a new place.
D. Our society has developed faster because of heroes in history.
綜合提升訓練
(八)
I. 單項選擇
1. This is ________interesting story and it is also ________ useful one. A. an; anB. an; theC. an; aD. a; a 2. I don?t like this one. Please show me ________ one. A. otherC. anotherA. Germen
B. the othersD. the other oneB. Germany
D. Germans
3. There are five ________over there. C. Germanys
4. I think you can do the work ________.
A. yourselfB. myselfC. himselfD. your 5. The ________of the planes made us feel sick. A. voiceB. noiseC. soundD. smell 6. ________ good health you have!
A. How aB. What aC. HowD. What
7. This plane is made ________ paper and it was made ________ my mother last night. A. of; byB. from; byC.with; forD. in ; with
8. They all looked ________at the teacher and felt very ________. A. happy; happyC. happy; happily A. many
B. happily; happilyD. happily; happy C. littleD. a lot of
9. It was a dry year. We?ve had ________ rain.
B. a few
10. Could you tell me when the meeting ________? A. beginB. beginsC. will beginD. beginning
11. I don?t know the school, but it?s ________ to be quite a good one.
A. told B. spokenC. talkedD. said A. is finished
B. was finished
12. When your homework ________, you may go home.
C. will be finishedD. has finished
13. When I looked into the room, I found Philip himself ________ in bed.
A. lies
B. lyingC. lay
D. lie
14. The Wangs ________here for ten years.
A. is livingB. have livedC. has livedD. lives
15. They ________the station ________the train started.
A. won?t leave; until
B. not leave; untilD. left; until
C. didn?t leave; until II.完形填空
Ever since I was little, my favourite season was winter. I loved to play in the snow and enjoyed the hot chocolate.
winter never gave me the special gift of snow on my birthday. I would ask my it didn?t snow on my birthday. She would laugh and tell me I asked too many questions. one day, she promised that she would make it snow on my next
birthday.
That year, my birthday, my grandmother died. I was sad but angry because she had promised to make it snow. The day of my sixth birthday, I woke up and ran to the window, hoping to see just one snowflake(雪花). But there was no . I felt mad at my grandmother. She had broken a promise.
By my sixteenth birthday, I , even though I still wished for it.During my party, I stayed with my friends and family and was truly Then I saw the white snow down all around. I was so excited that I ran around screaming and laughing. My friends all laughed me, but I didn?t care.
When I home, my grandpa said he had a gift for me. I was given me a gift. It was a small white box, which looked old. I opened it. There was a crystal snowflake(冰晶雪花)with a card that , “Happy Birthday.”
How could this be? My grandpa said it was my grandmother?s final on my “sweet I was that my smiling grandmother angel was and had been watching over me.
B. Unluckily
sixteenth”. I cried. 16. A. Certainly
C. ImportantlyD. Luckily
17. A. whenB. howC. whetherD. why 18. A. ButB. OrC. Then19. A. onB. afterC. before21. A. had gotC. had found
D. So D. in
20. A. seasonB. snowC. breakfastD. winter
B. had madeD. had lost
D. feared
22. A. happyB. sadC. angryD. sorry 23. A. hadB. wasC. played24. A. fell
C. disappearingD. falling25. A. withB. atC. from
D. off
D. flew
26. A. arrived atB. reached atC. got
B. standing
27. A. excitedB. surprisedC. pleasedD. sad 28. A. wroteB. saidC. explainedD. appeared 29. A. orderB. mistakeC. wishD. decision 30. A. sureB. angryC. sadD. confident III.閱讀理解
Mrs. Blanches? husband went off on a business trip to America. He planned to leave New York for Washington. He wanted to catch the 4:00 pm plane to Washington. It was seven o?clock in the afternoon. Mrs. Blanches received a telephone call from her husband. He told her that he was still at the New York airport. Mrs. Blanches was so surprised and asked him what happened.
“What happened, honey?” asked Mrs. Blanches. “Well,” said Mr. Blanches.
“I really don?t know what happened, honey. Everything was going fine. At half past three, I got my air ticket, checked my luggage and waited in line at the gate. I walked across the runaway(飛機跑道) to the airport and on my way I saw one of my old friends. Have you
remembered him? His name is Jack Smith. Now Jack Smith is an engineer who works at the airport. I was excited that I shouted to him. I came up and wanted to shake hands with Jack. But a policeman ran to me quickly and caught me.”
“Why did he catch you?” Mrs. Blanches asked.
“I don?t know,” said Mr. Blanches. All I said was“Hi,Jack!”
“Yeah, that is why they wouldn?t let you go,” said Mrs. Blanches. “They thought you were going to do harm to the whole plane. Only terrorists want to take control of a plane, and that is called „
31.What was Mrs. Blanches? husband?s destination(目的地)? A. Washington, America.B. South America. C. New York.D. The New York airport. 32. Where was Mr. Blanches when he called his wife? A. He was on the airport to Washington.B. He was still at the New York Airport. C. He was in Washington. D. He was on the railway station. 33. Who was Jack Smith?
A. Mr. Blanches? new customer.B. Mr. Blanches? old customer. C. Mr. Blanches? brother.D. Mr. Blanches? friend.
34.What does the underlined word mean in Chinese?
A.恐怖B.逮捕C.劫機 D. 別動
35. Why did the policeman catch Mrs. Blanches? husband?
A. Because they thought he was going to do harm to the plane. B. Because they wanted to get his help in catching terrorists. C. Because they knew that he was a terrorist. D. Because Mrs. Blanches asked them to do so.
IV.詞匯運用
36. Please help _______(你自己) to some fish, Tom. Don?t be so shy. 37. Man can?t live ________(沒有) water, so we must make good use of it. 38. Please listen to the speaker _________(仔細地) when he speaks. 39. She is such a pleasant and _________(有幫助的)girl that we all like her.
40. The foreign teachers in our school are from Germany. They are ________(德國人). V. 句型轉換
對畫線部分 提問)
_________ _________ does a football match last?
42. The old lady was so tired that she couldn?t go any further.(改為簡單句)
The old lady was _________ _________ to go any further. 43.Their new house is twice as big as the old one.(改為同義句)
Their new house is twice _______ ________of the old one.
44. I wonder how I can get to the nearest underground station. (改為同義句)I wonder ________ _______get to the nearest underground station. 45.If you do exercise a lot, you will be healthy.(改為同義句)
The ______ exercise you do, the _______ you will be.
第二篇：九年級化學培優輔導訓練
(一)
————化學用語簡單介紹
化學用語是化學學習的專門語言，它包括了元素符號、化學式和化學方程式。
一、元素符號：用來表示元素的符號。國際上規定是用這種元素的拉丁文名稱的第一個大寫字母表示。如果幾種元素拉丁文名稱的第一個字母相同，則在后面加上一個小寫字母來區別。
練習：寫出下列元素的符號：
鈷：銅：鈣：氯：錳：鎂：金：銀：氖：鈉：
二、化學式：用元素符號和數字的組合表示物質組成的式子，叫做化學式。 注意：
①、只有純凈物才有化學式，混合物沒有;
②、一種純凈物只有一個化學式。
1、化學式的讀法：
2、化學式的寫法：
(1)單質的化學式的寫法：
練習：寫出下列單質的化學式：
氧氣：氮氣：氯氣：氫氣：銅：鐵：水銀： 金剛石：硫：紅磷：硅：氖氣：氦氣：
(2)化合物的化學式寫法：
按照化合物的組成和性質可以分為：氧化物、酸、堿、鹽四類。
氧化物：由兩種元素組成，其中一種元素是氧元素的化合物。(某元素+氧元素) 酸：由H+和酸根離子組成的化合物。(H++酸根)
堿：由金屬離子和氫氧根離子組成的化合物。(金屬離子+OH-) 鹽：由金屬離子和酸根離子組成的化合物。
練習：寫出下列物質的化學式：
二氧化碳：二氧化硫：一氧化碳：五氧化二磷
水：四氧化三鐵：氧化汞：氧化鎂：二氧化氮： 硫酸：硝酸：碳酸：磷酸：鹽酸(氫氯酸)氫氧化鈉：氫氧化鈣：氫氧化銅：氫氧化鐵：氫氧化亞鐵：氫氧化鎂：氫氧化鉀：
氯化鈉：氯化鎂：氯化銅：氯化鐵：氯化亞鐵： 硫酸銅：硫酸鈉：硝酸鉀：碳酸鈣：碳酸鈉：
第三篇：培優班材料,平行四邊形專題訓練
特殊四邊形專題三：特殊四邊形中的探究問題
有關特殊四邊形中的探究問題是涉及特殊四邊形的幾何動態問題，要求學生自主探索、發現問題、總結規律，因此要求同學們對一些特殊四邊形的性質要掌握到位。解決此類問題的方法是先明確在變化過程中什么“不變”，特殊位置在什么地方，再從特殊到一般進行探究，這種方法在以后的數學學習中會經常用到。
【例1】已知：正方形ABCD中，∠MAN=45°，∠MAN繞點A順時針旋轉，它的兩邊分別交CB，DC(或它們的延長線)于點M，N，當∠MAN繞點A旋轉到BM=DN時(如圖1)，易證MB+DN=MN。
(1)當∠MAN繞點A旋轉到BM≠DN時(如圖2)，線段BM，DN和MN之間有怎樣的數量關系?寫出猜想，并加以證明;
(2)當∠MAN繞點A旋轉到如圖3所示的位置時，線段BM，DN和MN之間又有怎樣的數量關系?寫出你的猜想，并說明理由。
【例2】(1)操作發現：如圖1，在矩形ABCD中，E是BC的中點，將ABE沿AE折疊后得到AFE，點F在矩形ABCD內部，延長AF交CD于點G，猜想線段GF與GC有數量關系，并證明你的結論。
(2)類比探究，如圖2，將(1)中 的矩形ABCD改為平行四邊形，其他條件不變，(1)中的結論是否仍然成立?并說明理由。
【例3】如圖，正方形ABCD的角線AC，BD相交于點O。
(1)若E為AC上一點，過A作AGEB于G，AG，BD交于F，求證：OE=OF;
(2)若點E在AC的延長線上(如圖2)，AGEB交EB的延長線于G，AG的延長線交直線BD于點F，其他條件不變，OE=OF還成立嗎?若成立，請給予證明;若不成立，請說明理由。
第四篇：11月15日離子鑒別培優訓練
五題全對,….大爺給你跪了
• 1.下列各組物質，只用組內溶液相互混合的方法就能鑒別的是() •A、KOH、Na2SO
4、CuSO
4、MgCl2
•B、K2CO
3、BaCl
2、Na2CO
3、HCl
•C、Na2SO
4、BaCl
2、KNO
3、NaCl
• D、NaNO
3、AgNO
3、KNO
3、NaCl
•
•
•
• 2.下列各組物質的溶液，不另加試劑就能一一鑒別的是
• A.NaOHHClCuSO4MgSO4
• B.KNO3H2SO4NaOHBaCl2
• C.MgSO4NaClFeCl3NaOH
• D.Na2CO3K2SO4BaCl2HCl
•
•
•
• 3. 下列四組溶液，只提供無色酚酞試液不能鑒別的是()。 • A. Na2CO
3、Na2SO
4、H2SO
4、NaOH
• B. NaOH、Ca(OH)
2、HCl、Na2CO3
• C. HCl、H2SO
4、Na2CO
3、KNO3
• D. Na2SO
4、Ba(OH)
2、H2SO
4、HCl
•
•
•
• 4.下列各組物質的溶液，不另加任何試劑就能一一區別開的是(• A.NaOHCuCl2HCl
•B.Na2CO3HClCaCl2
• C.KNO3MgCl2KOH
• D.NaClKClAgNO3
•
•
•
•
• 5.下列四組溶液，不用其他試劑和試紙就能區別開來的一組是(• A、HCl、Na2CO
3、BaCl
2、Na2SO4
•B、H2SO
4、Na2CO
3、Na2SO
4、H2O
• C、NaCl、HCl、NaOH、Na2SO4
• D、HCl、NaOH、NaCl、H2O))
第五篇：2018年中考數學精品資料《平行四邊形》培優訓練
1、如圖，□ABCD的周長為20，BE⊥AD，BF⊥CD，BE=2，BF=3。則□ABCD的面積為 。
BAD C
FBACEDE
1題圖 2題圖
2、如圖，在□ABCD中，已知AD=8，AB=6，DE平分∠ADC交BC邊于點E，則BE等于( ) A、2 B、4 C、6 D、8
3、如圖，在周長為20的□ABCD中，AB?AD，AC、BD相交于點O，OE⊥BD交AD于E，則△ABE的周長為( )
A、4 B、6 C、8 D、10 EAD綠EA紫 D紅GH黃 橙藍OB BCFC 3題圖 4題圖
4、某廣場上有一個形狀是平行四邊形的花壇(如圖)，分別有紅、黃、藍、綠、橙、紫6種顏色的花。如果有AB∥EF∥DC，BC∥GH∥AD，那么下列說法中錯誤的是( ) A、紅花、綠花種植面積一定相等 B、紫花、橙花種植面積一定相等 C、紅花、藍花種植面積一定相等 D、藍花、黃花種植面積一定相等
5、如圖，l1∥l2，BE∥CF，BA⊥l1，DC⊥l2，下面的四個結論中：①AB=DC;②BE=CF;③S?ABE?S?DCF;④S□ABCD=S□BCFE。其中正確的有( )
A、4個 B、3個 C、2個 D、1個
EAEFCD l1D
P
l2AB BCF 5題圖 6題圖
6、如圖，在四邊形ABCD中，P是對角線BD的中點，E、F分別是AB、CD的中點，AD=BC，∠PEF=18，則∠PFE的度數為 。
7、四邊形中，有兩條邊相等，另兩條邊也相等，則這個四邊形( ) A、一定是平行四邊形 B、一定不是平行四邊形 C、可能是平行四邊形 D、以上答案都不對
8、如圖，□ABCD中，E是BC邊上的一點，且AB=AE。 (1)求證：△ABC≌△EAD;
(2)若AE平分∠DAB，∠EAC=25，求∠AED的度數。
BECAD00
9、如圖，□ABCD內一點E滿足ED⊥AD于D，且∠EBC=∠EDC，∠ECB=45。找出圖中條與EB相等的線段，并加以證明。
10、如圖，在△ABC中，AB=AC，延長BC至D，使CD=BC。點E在邊AC上，以CD、CE為鄰邊作□CDFE。邊點C作CG∥AB交EF于點G，連接BG、DE。 (1)∠ACB與∠DCG有怎樣的數量關系?請說明理由; (2)求證：△BCG≌△DCE。
11、如圖，在□ABCD中，∠BAD=32，分別以BC、CD為邊向外作△BCE和△DCF，使BE=BC，DF=DC，∠EBC=∠CDF，延長AB交邊EC于點H，點H在E、C兩點之間，連接AE、AF。 (1)求證：△ABE≌△FDA; (2)當AE⊥AF時，求∠EBH。
BCAFD0
0AEBDCAEGFBCD
EH
12、如圖，□ABCD中，BF⊥CD，BE⊥AD，∠EBF=60，AE=3，DF=2。求EC、EF的長。
13、如圖1，在四邊形ABCD中，AB=CD，E、F分別是BC、AD的中點，連接EF并延長，分別與BA、CD的延長線交于點M、N，則∠BME=∠CNE(不需證明)。
(溫馨提示：在圖1中，連接BD，取BD的中點H，連接HE、HF，根據三角形中位線定理，證明HE=HF，從而∠1=∠2，再利用平行線性質，可證得∠BME=∠CNE。) 問題一：如圖2，在四邊形ADBC中，AB與CD相交于點O，AB=CD，E、F分別是BC、AD的中點，連接EF，分別交DC、AB于點M、N，判斷△OMN的形狀，請直接寫出結論。
問題二：如圖3，右△ABC中，AC?AB，D點在AC上，AB=CD，E、F分別是BC、AD的中點，連接EF并延長，與BA的延長線交于點G，若∠EFC=60，連接GD，判斷△
0
0
BCFAED
AGD的形狀并證明。
B H2MANF1ADCFCOMNEBEDGAFDE 圖① 圖②
BC 圖③