Lắm giúp mk với mk đang cần gấp cảm ơn Mỗi câu 2 điểm nha

Từ một hộp gồm 13 bi đỏ và 7 bi trắng, lấy ngẫu nhiên 2 bi. Tính xác suất để lấy được a) 2 bi trắng. b) 1 bi đỏ và 1 bi trắng c) ít nhất 1 bi đỏ

Câu9: đa giác của tổng số đo góc ngoài bằng tổng số đo góc trong là A) tam giác B )tứ giác. C )ngũ giác. D )lục giác

cho tam giác ABC và tam giác A'B'C' có AB=A'B'.Bổ sung thêm những yếu tố để được trường hợp c-c-c.

Thuyết minh về tác phẩm Tắt Đèn của nhà văn Ngô Tất Tố Giúp mình với mai mình thi rồi

Chú chim sâu vui cùng vườn cây và các loại chim bạn thuộc mẫu câu: ai là gì? Ai thế nào? Ai làm gì?

Mng ơi giúp mình bài test 45p này với ạ

Cân bằng phản ứng oxi hóa – khử theo phương pháp thăng bằng electron; xác định rõ chất khử, chất oxi hóa, quá trình (sự) oxi hóa, quá trình (sự) khử: Fe3O4 + H2SO4 → Fe2(SO4)3 + SO2 +H2O

I.Choose the best answer 1. It is interesting _____________ tree leaves from different countries. A. collecting B. to collect C. collect D. collects 2. My dad enjoys ________ his bike to work. A. to ride B. ride C. rides D. riding 3. I love cooking, _________ my sister doesn’t. A. because B. so C. but D. and 4. Laughing is good _______ your health. A. for B. to C. with D. of Choose the word that has the underlined part pronounced /3:/ A. dear B. pear C. earn D. heart 6. Choose one mistake and correct it. I find carve eggshells boring because it takes a lot of time to complete one shell. A B C D II. Put the verbs in the correct form. 1. I enjoy (fish) .................................................. because it (be) ……………….… relaxing. 2. Jane will play chess after she (finish) …………………………. school. 3. What …………………… your mother often (do) ………………………at weekends? 4. I think, in the future people (not play) ………………………………… individual games. 5. We find (arrange) …………………… flowers interesting because it (help) ……………… us relax. 6. I (not collect) ………….……………………… dolls when I grow up. III.Complete the passage with the words given bought competition singing there on English Mary’s hobby is singing. She enjoys (1) ………………………… very much. When her brother (2) ………………………… a karaoke set last month, Mary was so glad that she sang every day after dinner. She likes to sing only (3) ………………………… songs. In fact, she has already sung all the songs found (4) ………………………… the karaoke discs. Minh is singing in the karaoke (5) ………………………… organized by the RC Center this Saturday. Her family is going (6) ………………………… to support her. IV.Choose the best answer to complete the sentences by circling A, B, C or D 1. - ............... do you find making pottery? – I finding making pottery interesting. A. What B. How C. Why D. When 2. Jenny...................two eggshells and he will continue the third one. A. carves B. has carved C. carved D. will carved 3. My father hates ………… coffee. He prefers tea. A. to drink B. drink C. drinks D. drinking 4. I have a temperature,………………………………. . A. but I go to bed early B. so I feel tired C. or I am putting on weight D. and I eat more vegetables 5. Which word has the underlined part pronounced differently from the others? A. away B. answer C. sunburn D. picture 6. Which word has main stress differently from the others? A. volunteer B. charity C. melody D. calorie 7. Beethoven ………….. a lot of songs. A. composes B. composed C. has composed D. compose 8. Liz: I am so nervous that I am putting on weight. Tony: ……………………….. . A. Wash your hand more B. Eat less junk food C. Sleep more D. Sunbathe less 9. Jack spends almost his time staring at his smart phone, ……..….. is very short-sighted. A. and B. or C. but D. so 10. My father loved …………. horse-riding when he was young. A. doing B. going C. playing D. taking 11. She feels itchy and her nose is running. She says she has ………….. . A. headache B. toothache C. allergy D. flu 12. Jenifer says that she ……………. collecting dolls, but she…………… in the future. A. will like / won’t continue C. likes / continues B. likes / won’t continue D. will like / continues PART READING I.Choose the correct answer to complete the passage by circling A, B, C or D Camping is an activity in which people live (23)………..temporarily. Campers participate in fishing, hunting, swimming, wildlife watching, plant study, and nature photography. It provides bodily benefits when it involves hiking to, from and around a campsite, and many people believe that camping makes youngsters (24)…………more confident. Camping is suitable (25) ………….those who are in wholesome physical condition because it may require walking several times. The key to an enjoyable camping is planning because planning the trip before leaving helps (26)………..avoid preventable accidents such as bad weather, injury, or simply a crowded campsite. 1. A. upstairs B. downstairs C. inside D. open-air 2 A. help B. handle C. feel D. thumb 3 A. in B. for C. at D. on 4. A.campers B. groups C. parties D. cliques

Fill in the blanks with proper words, then answer the following questions. scientists/ pollution/ serious/ factories exhaust/ reduce/ require/ percentage Everyone wants to reduce (1) _______. But the pollution problem is as complicated as it is (2) _______. It is complicated because much pollution is caused by things that benefit people. For example, (3) _______ from automobile caused large (4) _______ of air pollution. But the automobile provides transportation to millions of people. (5) _______ discharge much of the material that pollutes air and water, but factories give employment to a large number of people.