... biệt biến thái hoàn to n biến thái không hoàn to n? (2 điểm) * Biến thái hoàn to n : trãi qua giai đoạn: ( đ ) Trứng → sâu non → nhộng → sâu trưởng thành * Biến thái không hoàn to n: trãi qua giai...
... uu r uu r MN ⊥ a MN a = uu r uu r u u r ⇔ u u r MN ⊥ b MN b = Từ tìm t t′ ⇒ To độ M, N Đường vuông góc chung đường thẳng MN Câu VII.b: Gọi nghiệm ảo z = ki (k ∈ R) Ta có :...
... 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...
... AgNO3 / NH3 cú th phõn bit c cỏc cht dóy cht no sau õy ? A mantoz v glucoz B mantoz v saccaroz C glucoz v fructoz D mantoz v fructoz Cõu 35 Cho s sau : X (CxHyBrz) + NaOH (t0) anehit Y v NaBr; ... H2S Cõu 45 Glucoz, fructoz, saccaroz, mantoz thỡ nhng cht khụng cú kh nng tham gia phn ng gng l: A Glucoz v saccaroz B Glucoz v mantoz C Saccaroz v fructoz D Saccaroz v mantoz Cõu 46 Khi thu phõn ... anken l ng ng k tip tỏc dng vi H 2O (xt, to) ri tỏch ly ton b ru to thnh Chia hn hp ru thnh phn bng Phn tỏc dng ht vi Na to 420 ml khớ H2 (ktc) t chỏy hon ton phn thu c CO cú lng nhiu hn lng H2O...
... 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 ... đ) Cho Parabol (P): y = − (với a>0 a ≠1) x đường thẳng (D): y = x – a) Vẽ (P) (D) hệ trục to độ b) Tìm to độ giao điểm (P) (D) phép tính Bài 4: (1,5 đ) Cho phương trình x2 – 2(m + 1)x + 2m + ... 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...
... remember the name ofthe shop……………………………she bought the sofa them A where B whose C which D what 15 I’d rather he ………………………… tothe party A go B goes C is going D went 16 The children volunteer to clean ... nations of Europe, and was unknown tothe rest ofthe world English has become a world language because of its establishment as a mother tongue outside England, in all the continents ofthe world ... VI Read the advertisement and then decide whether the statements that follow are True or False Today, when English is one ofthe major languages in the world, it requires an effort ofthe imagination...
... son tothe airport tomorrow b They will go to meet their son tomorrow tothe airport c They will go tothe "airport to meet their son tomorrow d They will go tomorrow tothe airport to meet their ... at this time ofthe year There to put your towel down! a are no rooms c is no room b are no room d is room 44 The children's mother warned them near the river a not to go b to not go c ... things to c We have got many things to this Sunday d We have got many things this Sunday to 68 their / airport / to / / will / they / go / meet / tomorrow / the / son / a They will go to meet their...
... be part of him fromthe beginning These qualities are a sense of responsibility for the safety of others, a determination to (42) the job of driving, patience and courtesy Together, these become ... French, the word for the city of Genoa and for the people from that city is Genes, this name became attached tothe trousers and developed intothe word jeans Similar tothe word jeans, the word ... interesting story The word jeans is derived fromthe name ofthe place where a similar style of pants developed In the 16 th century, sailors from Genoa, Italy, wore a unique tyle of cotton trousers...
... be part of him fromthe beginning These qualities are a sense of responsibility for the safety of others, a determination to (42) the job of driving, patience and courtesy Together, these become ... French, the word for the city of Genoa and for the people from that city is Genes, this name became attached tothe trousers and developed intothe word jeans Similar tothe word jeans, the word ... interesting story The word jeans is derived fromthe name ofthe place where a similar style of pants developed In the 16th century, sailors from Genoa, Italy, wore a unique tyle of cotton trousers...
... submitted tothe director B Having finished the report, it was submitted tothe director C Having finished the report, he submitted tothe director D Having finished the report, he submitted it tothe ... 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 ... she wept at the bad news D Jean could not help herself because she was weeping 60 The best solution was thought of by the monitor A The monitor came up with the best solution B The monitor was good...
... to depart - tothe West or tothe cities Even more important, perhaps, was the (94) ofthe car on daily life It came into (95) for all sorts of short (96) , to work or tothe shop, which ... available on the cheapest (86) and the 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 ... between town and country The movement perhaps began with the prosperous middle class, (90) for a holiday from New York, who were delighted to discover the rest of their country But the cheap...
... = 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)/...
... Đốt cháy hoàn to n a gam hỗn hợp hydrocacbon C xH2x+2 CyH2y+2 (y = x + k) thu b gam CO2 Chứng minh: b b k < x ... (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 :...
... 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 rừng” – Thế ... 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...
... punishment from her master He was………………………………………… 34 If 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 ... human continue to pollute the air, it will not contain the correct amount of these gases Water is also a matter to take into consideration Industry is making our water filthy Therefore, resources ... 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...