đặt 3 câu để làm rõ một số nghĩa của mỗi từ nhiều nghĩa sau đây ( mỗi từ đặt 3 câu ) : a, ăn b, mang c,đi

Một hỗn hợp bột kim loại gồm Cu, Al, Fe. Nếu cho hỗn hợp này tác dụng với dung dịch HCl (dư) thì thu được 17,92 lít khi (ở điều kiện tiêu chuẩn) và 18 gam chất rắn. Mặt khác, nếu cho hỗn hợp này tác dung vừa dủ với dung dịch KOH thì phải dùng hết 200 ml dung dich KOH 2M. Tính khối lượng của mỗi kim loại trong hỗn hợp.🙏🙏Giúp mik với ạ

Ở đoạn 2 bài vượt thác, tác giả đã miêu tả con sông ra sao Nhanh hộ mình cái Đang cần gấp Ai đúng và nhanh mình vote 5 star

2 9 --------- = -------- x-9 x+12

giup em voi cac dai ca I. Choose the best answer. (4ms) 1. What is your ……………. dish for breakfast? A. liking B. most C. favourite 2. Hoa looks red. She was outdoors yesterday. Perhaps she has _______ A. flu B. sunburn C. spots 3. How many …………… do you need? A. cartons of yoghurt B. carton of yoghurt C. yoghurt 4. I …………….. Nha Trang when I was a child. A. visit B. visited C. will visit 5. My father hates ………… coffee. He prefers tea. A. drinking B. to drink C. drink 6. …………… the egg mixture into pan. A. Beat B. Pour C. Fold 7. Choose the odd one out: A. pork B. lemonade C. bread 8. If you want to …………… weight, you should follow a low fat diet. A. lose B. gain C. put on 9. …………… people usually live on the streets, under bridges, or in camps. A. Sick B. Homeless C. Elderly 10. How ……………cheese do we need to make a cheese cake? – About 250 grams. A. few B. many C. much 11. The students of the Imperial Academy ……………. by very famous scholars. A. are studied B. were taught C. was educated 12. …………… do you do volunteer work? - Every weekend. A. How long B. How much C. How often 13. Janna can’t play the piano, and Carol can’t play it …………… A. either B. too C. neither 14. She …………… blood twenty times so far. A. has donated B. donates C. is donating Choose the word whose underlined part is pronounced differently from the others’: 15. A. tutor B. volunteer C. student D. community 16. A. visited B. founded C. decided D. developed II. Give the right form of the verbs/ words in brackets. (2ms) 1. She often ............................. to the market with her mother every weekend. (go) 2. .................. you ever ................. volunteer work ? (do) 3. The Great Wall in China ................................. many centuries ago. (build) 4. Don’t worry. I ................................. fishing with you next Saturday morning. (go) 5. Are you interested in ................................ community service? (do) 6. English is an ............................... and important subject. (interest) 7. Go Green is a non-profit ............................... that protect the environment. (organize) 8. I think staying at home all day is ................... because I don’t know what to do. (bore) B. READING. (2ms) I. Fill in each blank with one suitable word from the box to complete the passage. (1m) is because reason community The first (1)……….…… why many families do volunteer work is that they feel satisfied and proud. The feeling of fulfillment comes from helping the (2)………….….. and other people. In addition, volunteering (3)…………a great way for families to have fun and feel closer. But many people say they don’t have time to volunteer (4)…………….. they have to work and take care of their families. Answers: II. Read the passage and answer the questions. (1m) Headache is a very common disease in the USA. Every year, about fifty million people have to go to the doctor because of headache. The symptoms of a headache are various. People can see black dots or bright spots in front of their eyes. They may also have pains only on one side of the head. Sometimes when the pain goes away, the head is sore. People have headache when they work too hard or they are too nervous about something. Medicine can help cure the disease but people usually have to do more than taking tablets. They can prevent headache by changing their diets or their lifestyle or simply by going to bed. 1. Is headache a common disease in the USA? 2. How many people have to go to the doctor because of headache every year? 3. When do people have headaches? 4. How can they prevent headaches?

1. Một mảnh đất hình chu nhật có chiều dai 24m , chiều rộng = 1/3 chiều dai . a, Tính diện tích mảnh đất đó b, Người ta sử dung 62,5% diện tích mảnh đất đó de làm nhà . Tính diện tích phần đất làm nhà 2. Tính bằng cách thuận tiện : 21,37 x 27,5 + 72,4 x 21,37 + 2,137

Nga is (1) _________ the stationer’s now. She wants to (2) _________ a new fountain-pen. The stationer (3) _________ her a red one and blue one. But she doesn’t (4) _________ a red one (5) _________ its color is bright. She (6) _________ the blue one. She (7) _________ this one is fine. So she (8) _________ it. This fountain-pen is 60 pence.bài này làm sao?

Tách riêng Đồng ra khỏi hỗn hợp gồm vụn đồng, vụn sắt, vụn kẽm

Giúp em bài này vs , em đang cần rất gấp.

CMR A=1/2 mũ 2+1/3 mũ 2+1/4 mũ 2+........+1/2009 mũ 2<1 giải thik chi tiết từng bước giải xong mik vote 5 sao cảm ơn nhiều ạ