Cho tam giác ABC vuông ở A, đường cao AH, trên cạnh BC lấy điểm D sao cho BD = BA, kẻ DE vuông góc với AC. a, Chứng minh: tam giác ADH = tam giác ADE b, Chứng minh: AH + BC > AB + AC c, Qua E kẻ đường thẳng // BC cắt HA tại I, cắt AB ở F; trên tia đối của tia HA lấy P sao cho HP = AI. Chứng minh: góc BPF = góc CPE

nước Nga năm 1917 có mấy cuộc cm ,đó là cuộc cm nào ,vì sao

thành phần phần trăm theo thể tích của nito trong không khí là

1. My brother, Minh ……………….……English on Monday and Friday. A. not have B. don’t have C. isn’t have D. doesn’t have 2. Hoang’s father gets up at 7.00 and eats ……………….…… A. a big breakfast B. the big breakfast C. big breakfast D. a breakfast big 3. They like ……………….……weather because they can go swimming. A. hot B. cold C. windy D. foggy 4. ……………….……fruit does Mr. Thanh produce? A. How much B. How many C. How long D. How often 5. Hung and ……………….……would like to join the English Speaking Club. A. me B. my C. mine D. I 6. We’re having an English examination ……………….……Friday, 11th December. A. at B. in C. to D. on 7. They are playing table tennis now. - ……………….……you like table tennis? A. Have B .Is C. Are D. Do 8. I hope the ……………….……can repair our car quickly. A. mechanic B. architect C. reporter D. dentist 9. Is your school ……………….……the zoo? A. near to B. in front to C. next D. in front of 10. My friends often go to school at ……………….……in the morning. A.a quarter to seven B.seven to a quarter C. seven quarter D. a quarter seven

cuộc khởi nghĩa lam sơn bùng nổ như thế nào? tại sao nhân dân hăng hái tham gia khởi nghĩa Tây Sơn ngay từ những ngày đầu?

Rewrite or do as directed: 1. My sister said "My friend doesn't want to live with his family" (reported speech) 2. They will give homeless children gifts for Tet holidays (passive voice) 3. Although Nga's sister is bored, nobody complains her work (In spite of)

Cho biểu thức M = $\frac{5 - x}{x - 2}$ .Tìm x nguyên M có giá trị nhỏ nhất

Ai làm giúp mik với ạ gấp gấp :<< hứa ctlhn 5 sao ạ

I.Arrange the words to make sentences. 1.run out/non -renewable/comes/energy/from/that/sources/will/some day. 2.fuels/to/are/they/limited/harmful/fossil/environment/and/are 3.can't/non-renewable/replace/energy/resources/be/up/once/used/are/they. 4.cheap/but/releases/a lot of/when/cola/is/burned/it/pollutants. 5.Vietnam/its/heavily/currently/relies/fuels/for/on/fossil/energy 6.solar energy/renewable/the/is/cleanest/abundant/and/most/energy 7.should/provide/water/heating/your/home/to/you/fit/solar/to/panels/or/electricity. 8/people/In/will/be/time.many/more/using/short/cars/electric/a. III.Fill in each blank with an appropriate word 1.____________ energy resources include coal,oil,natural gas and uranium. 2.____________energy creates clean,renewable power from the sun. 3.We need to look for ways to reduce our carbon__________- 4.Coal is a________ fuel that was formed millions of years ago. 5.Reneweable energy sources will never ________ out because they are easily replenished. 6.Burning fossil fuels emits a lot of pollutants that are________to the environment. 7.Solar_________- are fitted to building and turn the sun's ray to energy. 8.Some countries are________ coal with natural gas because natural gas is less polluting than coal. I.Choose the word that has underlined part pronounced differently from that rest 1.a.solar b.fossil c.hydro d.slogan 2.a.abundant b.consumption c.sunlight d.pollution 3.a.certain b.carbon c.coal d.convert 4.a.heat b.cheap c.instead d.easily 5.a.replaced b.limited c.trapped d.walked

Giúp tớ xíu nàooooooo :> Camon trước~~ Cần một số động lực đề thi hsg Annh !!~~~ ⇒ Một số dang ngôn , câu tục ngữ mà bạn biết giúp có động lực ⇒ Các bài hát tiếng ANh hiếm thư giãn = Tiếng ANh ⇒Một số cấu trúc TA quan trọng trong thi hsg anh 7 By : Mimz Ngáo's