CHÚC BẠN HỌC TỐT !!!!!!!!!
Đáp án:
$a) 300 kg/m^3; 1500 kg/m^3$
$b) 40 N$
$c) 30,4 J$
Giải thích các bước giải:
Chỉ được dùng thêm qỳ tím, phân biệt 4 dd Ba(OH)2, H2SO4, Na2SO4 và NaCl. Viết PTHH (nếu có)
điền từ thích hợp: BATS bats are very interesting animals. they live in caves or 1. in trees. they sleep........... the ay and only 2. wake up in........ evening 3. ........... it is dark, they fly out of their caves 4. and insects, which are their food. 5. some bats........ eat fruits in the jungle. 6. Most bats can't see very well but ............ have big ears and hear everything. 7. Many young and old people are afraid ....... bats 8. because they think they ....... al in their hair or on their face.......... bats are cleverer 10 ............ peoples think, an they fly very well and very fast. PHẦN TỪ ĐỂ ĐIỀN 1. during at until 2. one the some 3. already soon when 4 catch catches caught 5. so also to 6. they it you 7. for in of 8. do might should 9. but and if 10. that than then
Giải chi tiết giúp mình luôn ạ pls
Linh has played badminton since she was at school. => Linh started………………………………………………………….
ai giúp mình bài này với. nhớ có lời giải nhé. ai nhanh mình vote 5 sao.
A: rewrite the second sentence so that it has a similar meaning to the firt one 1:My house is taller than house Your house________________________________ 2: I love listening to music I like ______________________________________ 3The black dress is more expensive than the white one The white dress_____________________________________ 4We used the Internert many years ago The internert________________________________ 5No one in y group is more intelligent than Mary Mary___________________________________________ 6 He work much.He feels tired The more_______________________________________ 7Yesterday the temperature was nine degrees.Today it's only six It's_____________________________________________
cho ba so a,b,c khác 0 thỏa mãn : a+b+c=2020 và 1/a+1/b+1/c=1/2020 chứng minh rằng trong các số a,b,c có ít nhất một số bằg 2020
Create a paragraph (5 sentences) about your spending habits
Bài 1 : Chuyển các câu sau từ thì '' Hiện Tại Hoàn Thành '' thành sang thì '' Qúa Khứ Đơn '' sao cho nghĩa ko thay đổi 1. We have learned enghlish for 10 years 2. It has been a long time since we last met 3. Ms. Ann hasn''t taken part in any voluntary programs for 4 years 4. I haven't met my family since last Christmas Bài 2 : Sắp xếp các từ cho sẵn thành 1 câu hoàn chỉnh 1. many/went to/ volunteers/,/ Last year / the / and / flooded area/ free food/ people / gave / o 2. rebuild / helped / houses / They / trees / also / plant / and / people 3. people/ donated / generous / for / people/ Many / poor / money 4. I / joined / a student / ,/ was / When / charitable work / I / often/ in 5. my friends / used to / remote areas / travel / help / to / to / people there / I / with / 6. moutainous / for / areas / weeks / We / in / stayted / the 7. I / Now / do / still / charity / my / in hometown 8. a volunteer / was / a / experience / wonderful / Being
I. Choose the best answer: 1. Can you open this ………… of juice for me? A. carton. B. glass C. packet D. tube 2. We'll go to the museum if it ………… fine thia afternoon. A. is. B. are C. will be. D. was 3. We decided to go on a ………… of Eastern European capitals. A. excursion B. tour. B. travel. D. voyage 4. Every possible test was carried ………… to decided the nature of her illness. A. on. B. of. C. out. D. through II. Find the mistake and correct it: It was an e-mail from my uncle who lives in Spain, who's name is Eric. ◉‿◉ Những câu này mình đều làm rồi nhưng không biết giải thích sao cho hợp lí. Bạn nào giỏi tiếng Anh thì chọn giúp mình và giải thích luôn nhé! :3 ✷Lưu ý: Nếu bạn nào làm không đầy đủ, chọn sai hoặc giải thích không rõ ràng thì sẽ "được" mình đánh giá không tốt.
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