... line The tickets can be bought on line “Bring me a glass of water, John.” His mother said John’s mother told him to bring her a glass of water Manchester United didn’t win the football match ... (1mk) _ At first, everyone could have a bicycle _ After that, bicycles were cheap, a lot of people bought one _ Nowadays, people like traveling by cars because they are fast _ All ... / be / delicious _ Yesterday / we / go / shop / and / take / lots of photographs _ I / come back / next Wednesday ...
... it is unhealthy to live in many of world’s cities We have cut down so many trees that there are now vast areas of wasteland all over the world As a result, farmers in parts of Africa can not grow ... and rivers are too dirty to swim in There is so much smoke in the air that it is unhealthy to live in many of world’s cities We have cut down so many trees that there are now vast areas of wasteland ... lot of souvenirs for the children My wife is always complaining about the heaviness of my suitcase We are going to return Hanoi tomorrow night REVIEW – English I Supply the correct tense of...
... x ⇒ du = dx dv = dx, chọn v = x ⇒ J = ( x ln x ) e e − dx = 1 ∫ Vậy: V = π (e − 2) (đvtt) • CÂU IV: Có nam nữ có An Bình Lập tổ công tác người Tìm số cách chọn: a) Có nam lẫn nữ: • Số cách lập ... tổ trưởng, tổ viên, An Bình không đồng thời có mặt là: 5544 + 4752 + 4752 = 15048 (cách) • CÂU IV: a) d ; d chéo uu r Ta có d1 qua A(0, -2, -6) có VTCP a1 = (1,1, 2) uu r d qua B(4, 2, 1) có...
... dx tdt =− x x dx tdt tdt =− = 2 x 1− t t −1 + Đổi cận: 0,50 ⇒t = 2 x= ⇒t = 2 x= dt A= ∫ = t −1 IV dt t + 23 + = ln ∫ − t 2 − t |12 = ln ÷ ÷ 0,50 1,00 Gọi E trung điểm AB, ta có: OE...
... hay b = − c = −6 Vậy có mặt phẳng (Q) có phương trình là: x y z + + =1 3 x 2y z − − =1 Câu IV: y≥ Ta có: y = − x ⇔ x2 + y2 = Là nửa đường tròn tâm O, bán kính R = , có y ≥ Phương trình...
... dt dt 2 ữ = = 2 t t + t + dt = = du = (voi; t = tan u ) Tớnh t +1 12 =>I= Vy I= 24 Cõu IV (1,0 im) Tớnh gúc ca Tam giỏc ABC bớờt: 2A=3B; a = b 2sin A.cóA=3sinB-4sin B sin A = sin...