de tuyen sinh toan o nghe an
Bộ đề tuyển sinh Toán vào lớp 10 có đáp án
Ngày tải lên :
06/05/2014, 16:57
... MI.MK.MP = MP3 O Do ú MI.MK.MP ln nht v ch MP ln nht (4) - Gi H l hỡnh chiu ca O trờn BC, suy OH l hng s (do BC c nh) Li cú: MP + OH OM = R MP R OH Do ú MP ln nht bng R OH v ch O, H, M thng ... tam giỏc u Cõu 5: Cho t giỏc li ABCD cú din tớch S v im O nm t giỏc cho:OA2 + OB2 + OC2 + OD2 = 2S Chng minh ABCD l hỡnh vuụng cú tõm l im O ẩ S Cõu 1: a) Cho x v y l s thc tho x2 + y2 = Tỡm giỏ ... phm loi I v 120 sn phm loi II thi gian gi Mi gi sn xut c s sn phm loi I ớt hn s sn phm loi II l 10 sn phm Hi mi gi xớ nghip sn xut c bao nhiờu sn phm mi loi Cõu 4: Cho hai ng trũn (O) v (O) ct...
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ĐỀ TUYỂN SINH VÀO LỚP 10 AN GIANG Năm học: 2008 – 2009
Ngày tải lên :
30/06/2013, 01:27
... electricity People also burn coal to heat their homes, but they not it as much as they used to because it produces too much pollution In many homes, people burn natural gas in a stove to cook food It ... lot of pollution Câu 50: Which of the following sentence is NOT true? A Burning fossil fuels produces a lot of pollution B Only coal is used to heat the house C People can use natural gas to ... câu 50: Fossil fuels are fuels from fossils The three most important fossil fuels are coal, petroleum, and natural gas They contain hydrocarbons, or things that have only hydrogen and carbon in...
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16 bo de tuyen sinh 10(co dap an)
Ngày tải lên :
20/08/2013, 11:10
... invention of modern life It makes our world a (8) village A Choose the correct word to fill in the blanks: (2pts) A develop B to develop C developing D developed A Does B Do C Did D Done A fast ... because of modern industry and the need for more and more energy Newspapers and magazines write about water pollution, air pollution and land pollution Why is there so much discussion about pollution ... script Are you looking for a cheap, clean,effective sourse of power that doesn’t cause pollution or waste natural resourses? Look no further than solar energy from our sun.At present,most of our electricity...
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Đề tuyển sinh lớp 10 Chuyên Anh(09-10)
Ngày tải lên :
28/09/2013, 15:11
... Only two out of the five rooms we have booked have air conditioning We have booked five rooms, only Jane seems to come to the performance lat It looks I could hold ... nor could he relate to people He only growled and stared at them Finally the doctor won the boys confidence and began to work with him After many long years of devoted and patient instruction, ... they mean almost the same as those printed before them (10 points) It was wrong of you to allow a 4-year-old child to walk home alone You should I could realize how important the...
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Đề tuyển sinh lớp 10 Chuyên Anh(07-08- Quang Ngai)
Ngày tải lên :
28/09/2013, 15:11
... the following? D countries A communities B organizations C regions The word proliferated in line is closest in meaning to which of the following? D expanded A prospered B organized C disbanded ... appealed to many people Demand for the drink grew F But no one outside the Coca-Cola company has yet discovered what the magic combination of ingredients is, and a very few people- only seven, ... something challenging and I would certainly be happy to move to another city or even work abroad for a while The (7) _ is not so important at this stage , provided I earn enough to live on...
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Đề tuyển sinh lớp 10 Chuyên Anh(09-10- Vung Tau)
Ngày tải lên :
29/09/2013, 05:10
... obviously very important in forming your (10) _ to the world Some people are brought up to (11) _ too much on others and grow up forever blaming other people when anything (12) _ wrong ... Thailand you should clasp your hands (9) _ and lower your head and your eyes when you greet someone In America you should eat your hamburger with both hands and as quickly as (10) _ You shouldnt ... a lot of reasons that/ why I object to these/ those places Firstly, the owners take too much money from those people who come to sing Secondly, they cause/ are causing too much noise in/ to the...
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Đề tuyển sinh lớp 10 Chuyên Anh(09-10- Phu Yen)
Ngày tải lên :
29/09/2013, 05:10
... provided man with food and a convenient way to travel to many parts of the world Today, nearly two thirds of the worlds population live within 80 kms of the sea coast In the modern technological ... Technology and the Exploiting of the Sea C Sea Food D Man and Sea The major things that the sea offers man are _ A food, energy sources and minerals B fish and oil C minerals and oil D ocean ... not be able to find (10) job It is also a good idea to pay some money into a pension scheme, which will help you to look after yourself and your family when you are retired Finally, good...
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Đề tuyển sinh lớp 10 Chuyên Anh(08-09- Da Nang)
Ngày tải lên :
29/09/2013, 05:10
... the woods He did not walk erect, could not speak intelligibly, or could lie relate to people He only growled and stared of them Finally the doctor won the boy's confidence and began to work ... endangered animals and show how they struggle on the (3) of extinction As you enjoy the books 250 pages and over 150 colour photographs, you will have the (4) of knowing that part of your ... has been chosen as Book of the Year, a (13) awarded to books which are considered to have made a major contribution to wildlife conservation You will find Animal Watch at a special low ( 14)...
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Bài soạn DE THI HSG TOAN TINH NGHE AN CO DAP AN
Ngày tải lên :
26/11/2013, 07:11
... 0.5 6.0 P M F Q D N 0.5 A H a C O B E Gọi P giao điểm AD BC N trực tâm tam giác PAB PN AB Gọi giao điểm tiếp tuyến D với PN M Do góc PDM = góc ABD (1/2 số o ã ã cung AD) PDM' = DPM' Tam ... cân M MP = MD M trung điểm o n PN Tơng tự tiếp tuyến C cắt PN M Do M trùng M MN AB 0.5 0.5 0.5 0.5 0.5 0.5 b Trên tia đối tia DB lấy điểm Q cho DQ=DB QA//NO QA NE A trực tâm tam giác ... Sở GD&ĐT Nghệ An Kì thi chọn học sinh giỏi tỉnh Năm học 2007-2008 Hớng dẫn chấm biểu điểm đề thức Môn: toán lớp - bảng A Nội dung Điểm Bài a, 5,0 2.5 Gọi số...
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De tuyen sinh lop 10 mon anh va dap an
Ngày tải lên :
06/05/2014, 22:13
... nice of you B Congratulations! C Good luck! D Try harder next time The course a class book, a practice book and an audio tape A consists B contains C comprises D composes I decide not to move ... (should) go to Huong pagoda this weekend/ going to Huong pagoda this weekend Two days ago, my brother came to school late because he got up late The Internet is a wonderful invention of modern ... to that house its neighborhood is noisy A because B though C because of D so I suggest that all of you hard for the coming exam A working B to work C should work D can work If John...
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Đề tuyển sinh vào lớp 10 Anh
Ngày tải lên :
04/07/2014, 12:01
... to wipe out smoke and limit the emission of poisonous gases to solve the problem of air pollution 35 Name some of the sources of pollution in our modern world ... placed outside the house and women make offerings of fruit and moon cakes to the Moon Goddess Trang thí sinh không đợc viết v o khung phách, bị rọc II/ Read the passage and answer ... questions below (1m) There are many sources of pollution in our modern world At present, the most serious sources are acid rain, car exhaust fumes and oil spills Factory chimneys give out smoke...
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ĐỀ TUYỂN SINH 10 CÓ ĐÁP ÁN
Ngày tải lên :
11/07/2014, 08:00
... ta có: OC2 = OI.OD mà OC = OM (=R) (2) Từ (1) (2) : OM2 = OH.OA OM OA = OH OM Xét tam giác : ∆ OHM ∆ OMA có : OM OA = ∠ AOM chung OH OM Do : ∆ OHM đồng dạng ∆ OMA (c-g-c) ∠ OMA = ∠ OHM = 900 ... MO => MO MC MD ME · · ¶ = ) => MEC = MDO ( gãc tøng) ( 3) ∆ MCE : ∆ MDO ( c.g.c) ( M chung; MO MC OA OM T¬ng tù: ∆ OAE : OMA (g.g) => = OE OA OA OM OD OM = => = = ( OD = OA = R) OE OA OE OD OD ... - Gãc PMO = gocQNO = gocQOP ( = s® cung BC/2) · · · · · - MPO = 1800 − POM − PMO = 1800 - QOP − POM Khi ®ã ΔPMO ~ ΔONQ ( g-g) - PM.QN = MO.NO = MO2 Theo B§T C«si cã PM + QN ≥ PM QN = 2MO = MN...
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DE TUYEN SINH TOAN (10-2011) BD
Ngày tải lên :
12/07/2014, 13:00
... Tứ giác MBOH nội tiếp đường tròn (tổng số o góc đối diện =1800) * ∆DOH ∆DMB µ D : chung ⇒ ∆DOH : · · DOH = DMB (= 90 ) DO DH ⇒ = DM DB ⇒ DO.DB = DH DM ⇒ R.2 R = DH DM ∆DMB(g-g) Hay ... ∈R Bài 5: A B M O H D C 1) * BD⊥AC (Tính chất đường ch o hình vuông) · ⇒ BOH = 900 · BMD = 900 (Góc nội tiếp chắn đường tròn ) · · ⇒ BOH + BMD = 900 + 900 = 1800 ⇒ Tứ giác MBOH nội tiếp đường ... 4m + = 4m − 8m + = ( 2m − ) + > voi moi m (1) Mặt khác : Thay x=1 v o phương trình (*) Ta : − ( 2m − 1) + 4m − = ⇔ 1-4m+2+4m-8=0 ⇔ -5=0 (Không dung voi moi m x=1) (2) Từ (1) (2) ⇒ Phương trình...
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