Cho nguyên tố K (Z=19), Ca (Z=20), Al (Z=13), P (Z=15), S(Z=16), Br(Z=35), hãy nêu tính chất hóa học cơ bản của các nguyên tố đó theo các thông tin sau: - Là kim loại hay phi kim? - Hóa trị cao nhất với Oxi?, Hóa trị trong hợp chất với H? - Công thức oxit cao nhất? Công thức hiđroxit? Chúng có tính axit hay bazơ? - Công thức hợp chất với H, chúng tồn tại ở trạng thái gì? ( rắn, lỏng hay khí).

1. Bao said that we should use solar energy , _______________ ? 2. A huge tidal wave hit Anchorage, Alaska, in the1960s, _______________ ? 3. You think secondary students should wear uniforms to school,______________?

Giúp mình với mình đang cần gấp 😭

20. Choose the word whose underlined part is pronounced differently from the rest. A. advice B. machine C. Chinese D. decide 21. Choose the best answer among A, B, C or D to complete the following sentence. They are used _________outdoors and under pressure. A. to work B. to be working C. to working D. worked 22. Choose the underlined word or phrase that is in correct. Did your house built a long time ago? A B C D 23. Choose the best answer among A, B, C or D to complete the following sentence. Do you mind if I turn _________the T.V? I want to watch the news. A. off B. out C. down D. on 24. Choose the sentence which has the same meaning as the given one. She doesn’t go to china with us. A. We wish she goes to China with us. B. We wish she did went to China with us. C. We wish she went to China with us. D. We wish she can go to China with us. 25. Choose the best answer that is made from the given cues. conutries / not / those / many / to / plan / agreed / the / of A. Many of those countries agreed not to the plan. B. Many of those countries not agreed to the plan. C. Not many of those countries agreed to the plan. D. Not of many those countries agreed to the plan. 26. Choose the best answer among A, B, C or D to complete the following sentence. _________him this book if he comes. A. Gave B. Give C. Giving D. Given 27. Choose the underlined word or phrase that is in correct. When she came to my house this morning, I still slept. A B C D 28. Choose the best answer among A, B, C or D to complete the following sentence. She asked me what _________. A. is my name B. my name is C. my name was D. my name 29. Choose the best answer among A, B, C or D to complete the following sentence. - An: “I’ve passed my exam.” - Ba: “_________.” A. Good luck B. It’s nice of you to say so C. That’s a good idea. D. Congratulations! 30. Choose the best answer among A, B, C or D to complete the following sentence. - Mary: “That’s a very nice skirt you are wearing.” - Julia: “_________.” A. That’s nice B. I like it C. That’s all right D. I’m glad you like it

Mn ơi mình cần giúp bài này mn giúp mình với cảm ơn ạ

làm cho mình câu a b trước đã nhé

giúp mình nha, mình cảm ưn nhìu!

QUESTION TAG 1. He has got a car, ____________? 2. No salt is allowed, _____________? 3. Nothing was said, _____________? 4. Neither of them complained, ________? 5. I am right, _____________? 6. Turn on the light , _____________? 7. Ms. Patton assigns a lot of homework, _____________? 8. The Braves would like to win another World Series , _____________? 9. The case weights thirty kilos, ________________ ? 10. The book which I borrowed from you yesterday is from the library,_____________ ?

Từ đồng nghĩa vs từ ca dao là gì ạ. Mong mọi người trả lời giúp mình

Calli : " Dog food" NL : Đúng là lũ dân chúng ùa vào sân si câu của người ta cũng chỉ là loại dog food ném cho hổ đói ăn thôi :)