Mọi người giúp em với em cần gấp

Bài 1 : Viết tập hợp các số tự nhiên có 2 chữ số sao cho b, chữ số hàng đơn vị lớn hơn chữ số hàng chục là 3 đơn vị nhanh 2p

Cho 8g hỗn hợp gồm Fe, Al vào axit clohiđtric, tạo thành dung dịch muối FeCl2 AlCl2 có khối lượng là 15g ? Tính khối lượng dung dịch axít

giúp mik nhanh vs đang cần gấp ạ

Giúp mình với tí mình nộp r huhu,đừng chép mạng nha,không dài quá cũng đừng ngắn quá,60 điểm đó

I. Write the second sentence so that it has a similar meaning to the first. 34. Was the bike repaired by your father yesterday?  Did …………………………………………………….……………………………………….. 35. Study harder and you will pass your exam.  If you…………………………………………………….……………………………………….. 36. The girl is very friendly. She lived next door to us. The girl ............................................................................................................................................ 37. Ba said "I’m going to meet your sister in front of the station, Liz".  Ba said .............................................................................................................................................. 38.She hadn’t known me until my mother told her.  Not until ........................................................................................................................................... II. Use the cues given, write the complete the sentence: 39. I/ used/ fly/ kite/ when/ I/ small/ boy. ……………………............................................................................................................................. 40. At/ time/ last/ week/ we/ collect/ some garbage/ beach. ……………………………………….................................................................................................

GIÚP MÌNH VỚI, CÓ 1 BÀI THÔI Ạ:(

mình đang gấp ,mong các bạn giúp mình

. II. Read the following passage and answer the questions by choosing A, B, C or D. To do well at school, college or university you usually need to do well in exams. “All students hate exams” may be a generalization, but it is fairly true one. Certainly, all of the students I’ve known disliked doing exams, None of them thought that the exam system was fair; to do well in a exam you simply had to be able to predict the questions which would be asked, This was the case as regards tow students in my class at college. Both of them were exceptionally bright, but in the final year “exam” neither of them got an a grade. In fact, they both got Cs. The exam had tested us on questions which had come up the previous year. They had both assumed that the same questions wouldn’t come up again, and hadn’t prepared for them. 29. Students need to do well in exams __________. A. In order to do well at school. B. Because they need to do well at school. C. So that to do well at school. D. Therefore they have to do well at school. 30. The statement “All students hate exams” is _________. A. extremely true B. completely true C. quite true D. very true 31. Which of the following sentences is not true? A. All of the students the writer has known thought that the exam system was unfair. B. To do well in an exam you simply had the ability to predict the questions which would be asked. C. None of the students the writer has known disliked doing exams. D. “All students hate exams” is fairly true generalization. 32. Why did the two students in the writer’s class get C grades in the final exam? A. Because the exam was very difficult. B. Because they didn’t prepare for the questions that had come up the previous year. C. Because they were dull students. D. Because the questions weren’t in their lesson. 33. The writer’s main purpose of writing the passage is to _________________________. A. describe the importance of exams. B. discuss how exams effect on the students. C. explain the equality in examinations. D. criticize the exam system

Use the words in the box to fill in gap. devote lead to plays plentiful produce providing solution food Food (21) ________ an important part in the development of nations. In countries where food is scare, people have to send most of their time getting enough to eat. This usually slow down progress, because man have little time to (22) _________ science, industry, government, and art. In nations where food is (23) ________ and easy to get, men have more time to spend in activities that (24) ___________ progress human betterment, and enjoyment of leisure. The problems of (25) _________ good food for everybody has not been solved. Many wars have been fought for the (26) …….. – producing lands. But it is no longer necessary to go to war for food. Nations are beginning to put scientific knowledge to work for a (27) __________ to their food problems. They work together in the Food and Agriculture Organization of the United Nations (FAO) to help hungry nation (28) ___________ more food.