tình hình phát triển e learning ở châu á

... - Minh ho bng VD4 - Gi hc sinh tr li H8 - CEA = {xx E v x A, A E } Chỳ ý: a nh ngha hiu ca hai hp (sgk) - A\ B = {xx A v x B} - A E thỡ CEA = E\ A Hot ng : Cng c ton bi Hot ng ca HS - Cng ... A vi mi A - Nghe ging - Nghi nhn kin thc - Nm c cỏc kớ hiu , - Tr li cõu hi H3 - Ly vớ d v - i din tr li cõu hi - Quan sỏt biu Ven - Tp v biu Ven cho cỏc quan h H5 - a biu Ven th hin A l ... ng ca GV - a khỏi nim Mnh o - Thụng qua VD5 cho cỏc em phỏt biu Mnh o ca Mnh kộo theo ? Mnh ny ỳng hay sai - Nhn xột: mnh o ca mt mnh kộo theo ỳng thỡ cú th ỳng hoc sai - a thờm VD, yờu cu hc...

Ngày tải lên: 17/10/2015, 14:07

... the time D whenever When we were kids, we understand the importance of choosing a career A don’t B won’t C didn’t D weren’t We have to get up early we can come to school on time A because ... A while B until C by the time D whenever When we were kids, we understand the importance of choosing a career A don’t B won’t C didn’t D weren’t We have to get up early we can come to school ... that test must be inform before August A B C D Many people have complain about the dirty smoke from the factory A B C D He is believed be the best player in our team A B C D My little daughter is...

Ngày tải lên: 17/09/2013, 18:10

... x x 1 1 x x I = e dx + xe dx ; I1 = e dx = e = Cõu III: x x 0 e x I2 = xe dx , t u = x du = dx; t dv = exdx, chn v = ex Vy I2 = xe x 1 e x dx = I = I1 + I2 = e S Cõu IV: Gi I l trung ... uuur n ( P ) = ( 1;2; 3) , n ( P ) = ( 3;2; - 1) (P) qua A(1; 1; 1) (P) (P1), (P2) (P) cú mt vect phỏp tuyn: uuu r uuur uuur ộ ự n ( P ) = ( P ) , n ( P ) ỳ (-8; 10; -4) = - 2(4; 5; 2) n =...

Ngày tải lên: 04/09/2013, 09:10

... axetic C/Rượu etilic D/ Nước Câu2/ Có hai chất lỏng axit axetic rượu etylic có cách phân biệt chất A/ B/ C/ D/ Câu3/ Những chất sau tham gia phản ứng có phản ứng cộng phản ứng A/ Benzen B/ Metan ... không khí dùng làm dung môi công thời gian nghiệp B/ Tác dụng với axit axetic có H2SO4 2/ Có khí thoát cháy B+ đặc làm xúc tác 3/ Dung dịch hoá chua 4/ Tạo thành chất kết tủa màu xanh ... (đktc) a Tính % khối lượng chất X b.Nếu đun 14 gam X với axit H2SO4 đặc làm xúc tác thu gam este ? Cho hiệu suất este hoá đạt 80 % ( Cho C = 12, H = 1, O = 16 ) ...

Ngày tải lên: 26/07/2013, 01:25

... //////////////////// Hãy tính điền kết váo đấu chấm ( ) CÂU Giải bất phương trình – 4x + 16 < có nghiệm : CÂU Cho M ={ – ; – ; – ; – ; – ; – ; – ; – ; ; ; ; ; ; ; ; ; } Các số M nghiệm bất phương trình ... hai vế bất phương trình với số khác ta không đổi chiều bất phương trình PHẦN TỰ LUẬN: ( đ) BÀI 1: a) Cho x < y Chứng tỏ : 3x + < 3y + ≤ - 5n + Hãy so sánh m n b) Cho - 5m + 2 x −3 =− + ... sánh m n b) Cho - 5m + 2 x −3 =− + x BÀI 2: Giải phương trình : −3 x −x +21 x = – BÀI 3: Tính giá trị B = BÀI 4: Giải bất phương trình x − ≤ biểu diễn tập nghiệm trục số: BÀI 5: Giải bất phương...

Ngày tải lên: 05/08/2013, 01:26

... → Phenyl axetat Các chất X, Y, Z là: A Natri axetat, axit axetic, anhiđrit axetic B Natri axetat, axit axetic, benzophenon C 2-Hiđroxietanal, 2-cloetanal, axetyl clorua D Axit axetic, axetyl ... Phenyl axetat Các chất X, Y, Z là: A Natri axetat, axit axetic, benzophenon B Natri axetat, axit axetic, anhiđrit axetic C 2-Hiđroxietanal, 2-cloetanal, axetyl clorua D Axit axetic, axetyl clorua, ... theo sơ đồ sau: X → Y → Z → Phenyl axetat Các chất X, Y, Z là: A Axit axetic, axetyl clorua, anhiđrit axetic B Natri axetat, axit axetic, anhiđrit axetic C 2-Hiđroxietanal, 2-cloetanal, axetyl...

Ngày tải lên: 05/09/2013, 08:10

... có nhánh, aren D Ankan không nhánh, anken không nhánh, xicloankan không nhánh, xicloankan có nhánh, ankan có nhánh, anken có nhánh, aren Câu 39 Trong số chất: clobenzen, toluen, nitrobenzen, anilin, ... benzanđehit, naphtalen, pxilen, cumen, p-crezol,số chất tham gia phản ứng nhân thơm dễ so với benzen A B C D Câu 15 Cho chất: etan, etyl clorua, etylamin, etyl axetat, axit axetic, anđehit axetic, ... Trong số chất: clobenzen, toluen, nitrobenzen, anilin, phenol, axit benzoic, benzanđehit, naphtalen, p- xilen, cumen, p-crezol,số chất tham gia phản ứng nhân thơm dễ so với benzen A B C D Câu 15...

Ngày tải lên: 05/09/2013, 08:10

... Fe(NO3)2 → Ag + Fe(NO3)3 Cu + Fe(NO3)3 → Cu(NO3)2 + Fe(NO3)2 Fe + Cu(NO3)2 → Fe(NO3)2 + Cu Dãy xếp theo chiều tăng dần tính khử là: A Ag, Cu, Fe2+, Fe B Ag, Fe2+, Cu, Fe C Fe2+,Ag, Cu, Fe D Fe2+, ... Fe(NO3)2 → Ag + Fe(NO3)3 Cu + Fe(NO3)3 → Cu(NO3)2 + Fe(NO3)2 Fe + Cu(NO3)2 → Fe(NO3)2 + Cu Dãy xếp theo chiều tăng dần tính khử là: A Fe2+,Ag, Cu, Fe B Ag, Fe2+, Cu, Fe C Ag, Cu, Fe2+, Fe D Fe2+, ... + Fe(NO3)2 → Ag + Fe(NO3)3 Cu + Fe(NO3)3 → Cu(NO3)2 + Fe(NO3)2 Fe + Cu(NO3)2 → Fe(NO3)2 + Cu Dãy xếp theo chiều tăng dần tính khử là: A Fe2+, Cu, Ag, Fe B Fe2+,Ag, Cu, Fe C Ag, Cu, Fe2+, Fe D...

Ngày tải lên: 05/09/2013, 08:10

... điều kiện toán nằm đường tròn tâm I (3;  3) , bán kính R  Suy Ox tiếp xúc với đường tròn Vậy z  3 số phức có Acgumen dương nhỏ (bằng ) 0,25 0,25 Lưu ý: Các cách giải khác với đáp án điểm tối ... www.VIETMATHS.com Câu HƯỚNG DẪN CHẤM THI THỬ ĐẠI HỌC LẦN NĂM 2012 Môn: Toán khối A-B Đáp án 2 x  Khi m = 2 : y  x2 Tập xác định D = \ {  2} Chiều biến thiên 6 y'   0, x  2 ; y’ không xác ... 2  Nhóm đề: Hoàng Hữu Lập – Nguyễn Thị Bách – Lê Đức Hải 0,25 0,25 0,25 0,25 0,25 0,25 www.VIETMATHS.com 3 OM đạt giá trị nhỏ 2 (C) có tâm I(1,0), bán kính R=2 Hệ số góc tiếp tuyến k  tan...

Ngày tải lên: 05/09/2013, 08:10

Ngày tải lên: 05/09/2013, 08:10

... (pride) They think Vietnamese people are very _ ( friend) My sister likes to wear _ jeans ( embroider) Rewrite these sentences with the same meaning, using the words given ( 1ms) English ... dai Jeans can (buy/ be bought/ bought/ be buyed) all over the world He wishes he (can speak/ spoke/ speaks/ will speak) English well She is wearing a (long-sleeve/ sleeved- long / long-sleeved) ... help/ students feel/ part /the school / encourage/students/ be proud / their school/ the uniforms bear their school / name • help students study better /They / feel equal / many ways/ whether...

Ngày tải lên: 26/09/2013, 22:10

... taste c is d swallowed →d 10 The members of both the House of Representatives and the Senate are election by the citizens of the United States a members b both c election d citizens →c Grammar and ... measure b pleasure c feather d mean →d a issue b influence c pursue d statue →b a bear b hear c fear d dear →a Find the mistakes A future system of solid waste management should begin with reduce ... account c exchange d exchequer →c 23 To my , my mother’s illness proved not to be as serious as I had feared a anxiety b eyes c relief d judgment →c 24 I used to to school by bike when I was...

Ngày tải lên: 17/10/2013, 21:15

... the →d Some tree frogs can alter their colors in order to blend to their environment a tree b can alter c in order d to →d 10 If one is invited out to a dinner, it is perfectly proper to go either ... astonished that her Japanese was so as she had never been to Japan a definite b liquid c fluent d national →c 25 She regrets not her homework on time a have done b to c had done d doing →d 26 They ... harder a to work b for working c working d work →a 46 We went to the Town Hall on Thursday evening We went a the evening b on the evening c evening d in the evening →d 47 He a lot of money...

Ngày tải lên: 20/10/2013, 14:15

... appointments →b 12 Mr Green employed over five hundred people a They worked for him b He worked for them c They employed him d They were in charge →a 13 The school provides us with a very good general ... a excuses b reminds c forgets d remembers →b 32 The price of foodstuff suddenly went up at an unprecedented a race b degree c level d rate →d 33 We are going to mushrooms in the wood next ... pluck b select c choose d pick →d 34 "What’s up with Charles?" "He needs " a cheer up b to be cheer up c cheering up d to cheered up →c 35 She is the habit of doing exercises every morning...

Ngày tải lên: 20/10/2013, 14:15

... cooked d has been cooked →b 16 Your daughter doesn't you at all a take after b pollute c spoil d same →a 17 Her manager asked her where she had been She told him she apologized being late ... arrest to the editor b the editor his arrest c the editor that his arrest had been d the editor of his arrest →d 26 It is over a year I met my uncle a yet b when c since d as →c 27 The customers ... insisted by the manager a to be seen b to see c on being seen d on seeing →c 28 "I hope your mother gets better soon." "Yes, I hope " a to b so c that d too →b 29 His brother’s supermarket...

Ngày tải lên: 24/10/2013, 12:15

... monkey b storey c money d survey →d a blew b stew c crew d screw →b Find the mistakes Oceans of the world exerts strong influences on the weather over the Earth’s surface a exerts b on c over ... stage d floor →d 43 Most of the students are sanguine about their future a optimistic b horrible c fearsome d straight →a 44 I’m afraid there are no seats left Every seat is a full b reserved ... c served d free →b 45 There was no keen intimacy between the cat and the man a friendship b caress c knowledge d communication →a 46 Paul is a criminal He a bank two years ago a stole b steals...

Ngày tải lên: 24/10/2013, 12:15

... spite of bad weather, the picnic will go ahead a be cancelled b be enjoyed c travel far d take place →d 41 She went to the hairdresser’s yesterday She wanted have her hair washed (Select the correct ... decorative d decoratively →c 43 All next week the farmer will be ploughing the field (select the correct passive form of the following sentence) a All next week the field will be ploughed by the farmer ... next week the field will be ploughing by the farmer c All next week the field will be being ploughed by the farmer d All next week the field will being ploughed by the farmer →c 44 The number...

Ngày tải lên: 28/10/2013, 19:15

... got time for a very quick before he goes a snack b barbecue c feast d picnic →a 47 She was an ………… writer because she persuaded many people to see the truth of her ideas a ordinary b influential ... her seat in Parliament a taking b take c to take d took →c 40 The two brothers greatly each other They are exactly alike a resemble b look after c care of d identify →a 41 The village was ... esophageal sphincter a best be b causing by c due d weak →b 10 In 1903, when the Wright brothers announced they had invented a flying machine, his news was generally ignored a when b had invented...

Ngày tải lên: 28/10/2013, 19:15

... have made a for the next weekend a reserve b reservation c reserved d reservedly →b 42 The holiday at the seaside ……… We really had a good time there a made us happily b made us happiness ... vanished b entered c emerged d vacated →a 47 He asks the shop :“Where’s the washing powder?” a nurse b assistant c barber d conductor →b 48 The hall the meeting will be organized, is very large a ... the river and fish a at b next c beside d along →c 40 We have advised him ……… many times but, you know, he is a stubborn boy a of keeping quiet b to keep quiet c keeping quiet d keeping quietly...

Ngày tải lên: 07/11/2013, 16:15