... x1, x2 nghiệm (1) m m x1 + x2 ; x1 + x2 + m ÷ ≡ I − ; ÷ 2 Trung điểm AB I ( theo định lý Vi-et) Ta có I ∈ MN ⇒ m = –4, (1) ⇒ 2x2 – 4x = ⇒ A(0; –4), B(2;0) Câu II: 1) PT ⇔ cos2x...
... hoỏ - kh sau: Zn2+/Zn, Cu2+/Cu, Fe2+/Fe Bit tớnh oxi hoỏ ca cỏc ion tng dn theo th t: Zn2+, Fe2+, Cu2+ tớnh kh gim dn theo th t Zn, Fe, Cu Trong cỏc phn ng hoỏ hc sau, phn ng no khụng xy ra? A ... mui ny b phõn hu ng thi theo hai hng (a) KClO3 KCl + O2 va (b) KClO3 KClO4 + KCl Bit rng phõn hu hon ton 7,35 gam KClO3 thu c 3,35 gam KCl Phn trm kali clorat b phõn hu theo (a) v (b) tng ng ... 336 ml D 448 ml Cõu 24: Mt este ca ru metylic tỏc dung vi nc brom theo t l s mol l : Sau phn ng thu c sn phm ú brom chim 35,1% theo lng Este ú l: 21 NGUYN THANH TUYN TRNG THPT H BC A metyl propionat...
... AM OE, BM OF P Q Tứ giác MPOQ hình gì? Tại sao? c/ Kẻ MH vng góc với AB (H thuộc AB) Gọi K giao điểm MH EB So sánh MK với KH d/ Cho AB = 2R gọi r bán kính đường tròn nội tiếp tam giác EOF Hãy chứng ... nội tiếp Tính tích OH.OA theo R b) Gọi E hình chiếu điểm C đường kính BD đường tròn (O) Chứng minh góc HBE = góc HAB c) AD cắt CE K Chứng minh K trung điểm CE d) Tính theo R diện tích hình giới ... N C/m: AM = AF.AE c) C/m: I trung điểm BM d) Cho OM = R Tính diện tích tam giác ABM độ dài AE theo R PHỊNG GD-ĐT QUẬN Trường THCS Kiến Thiết ĐỀ THAM KHẢO THI TUYỂN SINH LỚP 10 NĂM HỌC 2010-2011...
... B C D 34 Two thirds ofthe food were eaten by the boys yesterday A B C D V Use the correct form ofthe world given in each sentence: 35 The ………………………… of their house left them no place to live ... can’t remember the name ofthe shop……………………………she bought the sofa them A where B whose C which D what 15 I’d rather he ……………………………to the party A go B goes C is going D went 16 The children volunteer ... statements that follow are True or False Today, when English is one ofthe major languages in the world, it requires an effort ofthe imagination to realize that this is a relatively recent thing-that...
... build the information Super-Highway around the world 61 The phrase "the king of wines and wine of kings" means a Champagne is the best wine of kings b Champagne is the king that drinks lots of ... greater the demand, the price a the highest b the high c higher d the higher 42 Many big cities are suffering from serious air pollution, ? a don't they b aren't they c are they d they 43 The ... is often shaped by machine d Both Band C 65 The passage primarily discusses a champagne, a kind of wine b the uses of glass c the types of glass products d the ways of making glass Arrange the...
... French, the word for the city of Genoa and for the people from that city is Genes, this name became attached to the trousers and developed into the word jeans Similar to the word jeans, the word ... developing the biography of a famous person Chon phần gạch chân cần sửa: 66 Visitors may realize that even though they cant make their homes in Da Lat city, they can take away with them memories of their ... crowds of people D various attraction 70 The young are thought to be the future leaders ofthe country, and it is essential that they should understand their heritage as full as possible A The young...
... French, the word for the city of Genoa and for the people from that city is Genes, this name became attached to the trousers and developed into the word jeans Similar to the word jeans, the word ... developing the biography of a famous person Chon phần gạch chân cần sửa: 66 Visitors may realize that even though they cant make their homes in Da Lat city, they can take away with them memories of their ... crowds of people D various attraction 70 The young are thought to be the future leaders ofthe country, and it is essential that they should understand their heritage as full as possible A The young...
... order of difficult B in order of difficulty C in orderly difficult D in the order of difficulty 55 The success ofthe play was due to A the actors and how it was produced B the acting and the ... The audience, enjoyed the performance A most of them were students, B most of whom were students, C they were mostly students, D they themselves were students, 54 The tests in this book are ... came up with the best solution B The monitor was good with the best solution C No one could solve the problem except the monitor D The best solution was monitored by the thought Read the passage...
... irresistible (87) ofthe car to consumer did the rest The result was a complete (88) of American life The car began to break (89) the ancient sharp division between town and country The movement ... ice-cream." "That' s quite natural." a Most of b Most c The most d The most of 81 I felt as if I a confidence a have betrayed b would betray c had betrayed d am betraying 82 Nearly all ofthe reporters ... or in (91) of work Even poor country people, it (92) out, could own car and when they did so, many of them used the freedom thus (93) to depart - to the West or to the cities Even...
... = a ( x ) y y y a +2a ( x ) = xa + a +a ( x ) 4 Từ (1): VCO2 = xa , VH2O = V O2 p = VO2 d Theo gt: Vhh đầu = V hh sau a = y/4.a (0,25điểm) y = Ngưng tụ nước: %VH2O = 40% VH2O = 0,4(a + 2ax ... = x1 (0,5điểm) (x-x1) , (y-y1) số mol Aldư, Zn dư (I ) (0,25điểm) p Từ (2): n ZnCl = nZn = y1 p Theo gt, ta có: 27(x-x1)+65(y-y1)+ 133,5x1 + 136y1= 65,45 27x +65y + 106,5x1+ 71y1 = 65,45 1,5x1 ... 1mol Đặt a số mol CuO phản ứng 80 n CuO = (1 – a)mol d Từ (5): n Cu = n H = n CuO = a mol 2p p Theo gt, ta có: 80(1-a ) + 64 a = 72,32 a = 0,48 mol Do lượng H2 phản ứng 80%, nên: n H = (0,48.100)/...
... (0,25điểm) Gọi x số mol A Từ (1): n CO2 = xa mol m CO2 = 44ax gam (1) n m H2O = 9ay gam H2O = y/2amol Theo gt: mCO2 44ax 4,888 x y mH 2O 9ay (0,25điểm) Tacó MA = 78 12x + y = 78 x = y = 6:...
... hop? neu nguyen tac thu thai theo pp SV va cac dk de chon tho thich hop? cac yeu to lam tang duong huyet? trinh bay ve truong luc co? the nao la phan xa tu the chinh the? duong cong starling? anh ... Đường thần kinh hướng tâm: sợi cảm giác theo rễ sau tủy sống 3) Trung khu thần kinh: thần kinh trung ương (não tủy sống) 4) Đường thần kinh ly tâm: sợi vận động theo rễ trước tủy sống 5) Cơ quan đáp ... độc hại Đánh giá NC, Tiên lượng trước phẫu thuật Theo dõi điều trị : thuốc GPQ, Steroid điều trị hen, bệnh phổi mô kẽ, xơ nang, bệnh thần kinh cơ… Theo dõi tác dụng phụ thuốc có độc tính phổi :...
... ngồi Khi mẹ em bé hỏi em trò chuyện với ông ấy, cậu bé trả lời: "Không có đâu Con để ông khóc." (Theo "Phép màu nhiệm đời" - NXB Trẻ, 2005) Câu 2: (5 điểm) Sự khám phá thể vẻ đẹp tình cảm gia đình ... gắn liền với tương lai quan trọng Rất học sinh hướng đến môn khoa học xã hội (Đặc biệt môn Văn) Theo em, văn chương khoa học lĩnh vưc quan trọng hơn? Hãy viết văn nghị luận ngắn (khoảng trang ... ngự trị, Nơi thênh thang ta vùng vẫy Nơi ta không thấy bao giờ! Có biết ngày ngao ngáng Ta đương theo giấc mộng ngàng to lớn Để hồn ta phảng phất gần - Hỡi cảnh rừng ghê gớm ta ơi! (Trích “Nhớ...
... unlimited supply of them However, this definition may change if people are not careful with the consuming of these resources The quality of solar energy that reaches the earth may depends on the atmosphere ... you stay there longer, you will like the place more The longer……………………………………………… 35 They used to most of their farmwork by hand Most of their farmwork………………………………… 36 Are you sorry that you didn’t ... enjoy the supply of water for good …………… 20 Pollution does not affect the quality of solar energy …………… 21 The manufacture of things dirties water on the earth …………… 22 Conservation is of minor...