một hình vuông 5 cm .một hình tam giác có đáy là 8cm và có diện tích bằng diện tích hình vuông.tính chiều cao của tam giác

Phân biệt các hình thức cảm ứng ở động vật

Điền các từ trong ngoặc vào câu . There ______ any water.( is / aren’t/ don’t/ doesn’t )

Cho đường tròn O đường kính AB vẽ đây cũng CD vuông góc với AB tại I (I nằm giữa A và O ) lấy điểm E trên cùng nhỏ BC (E khác B và C) AE cắt CD tại F . Chứng minh : A) BEFI là tứ giác nội tiếp đường tròn B) AE. AF= AC bình C) Khi E chạy trên cùng nhỏ BC thì tâm đường tròn ngoại tiếp tam giác CEF luôn thuộc một đường thẳng cố định

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions A. Chantal's parents didn't have much money, so they sent her to a state primary school when she was five. She enjoyed her reading and writing lessons, but there were so many pupils in the class that the teacher found it difficult to control them. When Chantal was eleven, her father got a better job, and decided to spend some money on her education. He sent her to an expensive private school, where the girl wore dark green uniforms and did two hours' homework every evening. Chantal liked her new school, and did well. Because she studied hard, she passed all her exams, and went to university at eighteen. She chose history course and was an excellent student. In the end, she decided to become a teacher, and returned to her old primary school to teach. 41. Why did Chantal's parents send her to a state primary school? A. They liked it. B. It was near her house. C. They were poor. D. It was expensive. 42. What was her teachers' problem at the primary school? A. Large class. B. Low salary. C. Disobedient pupils. D. Strict head master. 43. What was an important event for Chantal when she was eleven? A. Leaving her home. B. Getting better education. C. Passing the exams. D. Going overseas. 44. At university she studied . A. very badly B. very poorly C. very well D. averagely 45. What profession did she finally decide to choose? A. Cooking B. Teaching C. Nursing D. Advertising B. For the last few years, many children have been going to a summer camp in north Greece called Skouras Camp. They always seem to have a good time, so if you're wondering what to do with the kids for three weeks this summer, you could do worse than send them to this beautiful camp on the shores of the Aegean Sea. If your children, like mine, are keen on adventure, sports and good company, the Skouras Camp will keep them busy all day doing the things they most enjoy. Skouras is an international camp with children from all over the world. My children have made friends with children of their own age from Poland, China, Demark and the United States. Naturally they get lots of opportunities to practice their English as this is the only language spoken. The camp is located in one of the most beautiful parts of Chalkidiki. It is huge and is just a stone's throw away from the clear, blue Aegean Sea. It takes the children just five minutes to walk to the golden sandy beach on foot. The program is packed with exciting activities such as horse riding and table tennis. Other sports include basketball, volleyball and athletics. The Camp ends with a sports contest in the last week which all parents are invited to attend. 46. All the children come to the Camp have to ........................ A. be at the same age B. speak English C. be only keen on adventure D. practice basketball 47. How many kinds of sports can be played in the Camp? A. 2 B. 3 C. 5 D. 4 48. Which of the following sentences is not true? A. The children will be busy taking part in the Camp' programmed activities. B. The parents can attend their children's sports contest. C. The children will take more chances of English practice. D. The Camp is quite far from Aegean Sea. 49. The tone of the passage could be described as ............... A. supportive B. negative C. disbelieving D. humorous 50. What should be the best title for the passage? A. Children's summer activities. B. An international summer camp. C. Advice on children caring in summer. D. Chalkidiki's landscape – the Aegean Sea.

Giúp mk vs mk chỉ còn 10 điểm thôi

Lập pt các cạnh tam giác ABC biết B(2;-3); pt đường cao hạ từ A và trung tuyến từ C lần lượt là d1: 3x-2y+3=0; d2: 7x+y -2=0

Cho hệ phương trình sau: ( k là tham số) $\left \{ {{x-y=1} \atop {kx+2y=2}} \right.$ a/ Giải hệ với k = -1 b/ Tìm k để hệ có vô số nghiệm. c/ Tìm k để hệ có nghiệm thỏa mản x + y = 5

Gliberelin phân bố như thế nào ?

Một trong những chuyển biến quan trọng ở các nước đế quốc là A: sản xuất tụt hậu B: sản xuất phát triển không đều. C: hình thành các tổ chức độc quyền. D: sản xuất phát triển.