điền vào chỗ trống Our laptop ___________ 3 kilograms and costs about 800 dollars. * 1.weighs 2.heaviest 3.weigh 4.weighed

a) x(x+3) = 0 b) (x - 2)(5 - x) = 0 c) (x-1)(x^2+ 1) = 0 d) -12(x - 5) + 7(3 - x) = 5 e) 30(x + 2) - 6(x - 5) - 24x =100 f) | 2x - 5 | = 13 g) I 7x + 3| = 66 h) | 5x - 2|  0

Một mảnh vườn hình thang có tổng số đo hai đáy là 140m, chiều cao là 4/7 tổng số đo hai đáy. a) Hỏi diện tích mảnh vườn là bao nhiêu mét vuông b) Người ta sử dụng 30,5% diện tích mảnh vườn để trồng xoài. Hãy tính phần diện tích còn lại

1. You should ____________ information about a custom or tradition. A. finds B. found C. finding D. find 2. A tradition is something we do that is special and ____________ down through the generations. A. to passed B. is passed C. passing D. is passing 3. In the UK, there are lots of customs for table manners. For example, we ____________ use a knife and fork at dinner. A. have to B. are having C. has to D. having to 4. In Viet Nam, you____________ use only the first name to address people older than you. A. should B. must C. shouldn’t D. have to 5. At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon-cakes ; ____________, every child likes it very much. A. However B. Moreover C. Because D. Therefore 6. ____________ spring comes, many Vietnamese villages prepare for a new festival season. A. While B. When C. Nevertheless D. However 7.People burn incense to show respect to their ____________ during Tet. A. relatives B. ancestors C. friends D. neighbors 8.The Le Mat Festival ____________ the founding of the village. A. worships B. commemorates C. performs D.preserves 9.Which ethnic group has the largest population in Viet Nam? –“____________” A. Kinh B. Muong C. Tay D. Hmong 10.The Lao is one of ……………… many Thai- speaking peoples. A. the B. a C. an D. A and C II. Give the correct form of the following verbs: 1. Lang Lieu couldn’t buy any special food because he ( be)____________ very poor. 2. When I came, his family (have) ___________ dinner around a big dining table. 3. Children should(take)__________ things from adults with both hands. 4. She fancies (read)___________ books to the young children. 5.we (not finish)_____________________ our homework yet.

Hãy so sánh sự tiến hoá các hệ cơ quan của lớp chim với bò sát (bộ xương, hệ tuần hoàn ,hệ hô hấp, hệ thần kinh.)

(2x+3)/(2x+1)-(2x+5)/(2x+7)=1-(6x^2+9x-9)/((2x+1)(2x+7))

-cho tâm giác ABC vuông tại A, có góc B =60° .Tia phân giác của góc B cắt AC tại D.Kẻ DE vuông góc với BC tại E 1/chứng minh :∆ABD=∆EBD 2/chứng minh ∆ABE là tam giác đều Giúp mk với ạ

1/Một đầu máy xe lửa có công suất 100 mã lực kéo 1 đoàn tàu chuyển động đều trong 5 phút đi được 1km. Tính lực kéo của đầu máy xe lửa? Biết 1 mã lực = 736 W 2/Một con ngựa với lực kéo 700N đã kéo 1 chiếc xe đi trên 1 đoạn đường 300m. Một con bò với lực kéo 600N cũng kéo chiếc xe đó đi trên đoạn đường 350m. Hỏi ngựa hay bò tốn nhiều công hơn?

C. READING (2.5pts) Read the text, and do the tasks that follow. Earthquakes Earthquakes are among the deadliest natural disasters, causing the largest numbers of casualties, the highest death tolls, and the greatest destruction. In 1556 in China, the deadliest earthquake in history killed 830,000 people. But many other earthquakes have caused the deaths of more than 100,000 people, and it is not unusual, even in modern times, for an earthquake death toll to reach 20,000 to 30,000 people with hundreds of thousands left homeless and with countless injured. The floodwaters of the 2004 tsunami in Sumatra, which killed over 200,000 people, were caused by a catastrophic earthquake. Task 1: Match a word in column A with its definition in column B, writing the answer in each blank. (1.25pts) Answer A B ________ 26. deadly (adj) A. a person killed in a war or disaster ________ 27. casualty (n) B. very many ________ 28. (death) toll (n) C. causing great damage ________ 29. countless (adj) D. causing death ________ 30. catastrophic (adj) E. the number of people who were killed by something Task 2: Decide whether the statements are true (T) or false (F). (1.25pts) T F 31.Earthquakes are one of the deadliest natural disasters.   32.In modern times, the number of deaths caused by an earthquake is limited.   33.China is the country with the deadliest earthquake in history.   34.Earthquakes cause lots of death toll, homelessness and injuries.   35.Earthquakes do not cause tsunamis at all.   III. Complete each sentence with the correct word from the box. (1.25pts) drought flood hurricane landslide tornado 21.When there is a _____________, a lot of water covers an area where the usually isn’t water. 22.A______________ refers to a long time without rain. 23.When there is _____________, a lot of rocks and earth fall down a hill. 24. A __________________ is a storm with a lot of wind that moves over water. 25. A__________________ is a storm in which the air moves very quickly in a circle.

câu nào đồng nghĩ với câu sau đây ? How high is that building? * a.How much did that building high? b.What is the height of that building? c.What is the high of that building? d.How tall that building is?